DSRequest (Smart GWT LGPL Edition API 5.1p (2022-05-28))

java.lang.Object
- com.smartgwt.client.core.JsObject
- - com.smartgwt.client.core.DataClass
  - - com.smartgwt.client.rpc.RPCRequest
    - - com.smartgwt.client.data.DSRequest

All Implemented Interfaces:

com.google.gwt.event.shared.HasHandlers
```
public class DSRequest
extends RPCRequest
```
Request sent to the server to initiate a DataSource operation. All properties which are legal on RPCRequest are legal, in addition to the properties listed here.

See Also:

RPCRequest

Field Summary
- Fields inherited from class com.smartgwt.client.core.DataClass
  factoryCreated, factoryProperties, readOnly
- Fields inherited from class com.smartgwt.client.core.JsObject
  jsObj

Constructor Summary

Constructors
Constructor and Description
`DSRequest()`
`DSRequest(DSOperationType operationType)`
`DSRequest(DSOperationType operationType, Criteria criteria)`
`DSRequest(DSOperationType operationType, com.google.gwt.core.client.JavaScriptObject data)`
`DSRequest(DSOperationType operationType, Record data)`
`DSRequest(DSOperationType operationType, java.lang.String operationId)`
`DSRequest(DSOperationType operationType, java.lang.String operationId, Criteria criteria)`
`DSRequest(DSOperationType operationType, java.lang.String operationId, com.google.gwt.core.client.JavaScriptObject data)`
`DSRequest(DSOperationType operationType, java.lang.String operationId, Record data)`
`DSRequest(com.google.gwt.core.client.JavaScriptObject jsObj)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`java.lang.String`	`getAdditionalOutputs()` For fetch, add or update operation, an optional comma separated list of fields to fetch from another, related DataSource.
`java.lang.String`	`getComponentId()` For requests submitted by a `DataBoundComponent`, the `Canvas.ID` of the submitting component.
`Criteria`	`getCriteria()` Return the Criteria associated with a FETCH operation.
`DSProtocol`	`getDataProtocol()` `DataProtocol` for this particular request.
`java.lang.String`	`getDataSource()` DataSource this DSRequest will act on.
`java.lang.Integer`	`getEndRow()` End row of requested results, used only with fetch operations.
`ExportFormat`	`getExportAs()` The format in which the data should be exported.
`java.lang.String`	`getExportCSS()` When using `RPCManager.exportContent()` to produce a .pdf from a Smart GWT UI, this property allows dynamic CSS to be passed to the server.
`Record[]`	`getExportData()` Only applies to request properties passed to `ListGrid.exportClientData()`.
`java.lang.Boolean`	`getExportDatesAsFormattedString()` When exporting via `ListGrid.exportClientData()` to an `XLS` or `OOXML` spreadsheet, forces dates to export as a string rather than a true date value.
`java.lang.String`	`getExportDelimiter()` The character to use as a field-separator in CSV exports.
`ExportDisplay`	`getExportDisplay()` Specifies whether the exported data will be downloaded as an attachment or displayed in a new browser window.
`java.lang.String[]`	`getExportFields()` The list of field names to export.
`java.lang.String`	`getExportFilename()` The name of the file to save the exported data into.
`java.lang.String`	`getExportFooter()` Optional text to appear at the end of the file.
`java.lang.String`	`getExportHeader()` Optional text to appear at the beginning of the file.
`java.lang.Boolean`	`getExportHeaderless()` This property allows omitting column names from CSV and Excel exports (no effect on JSON or XML exports).
`ExportImageFormat`	`getExportImageFormat()` The image format in which the SVG graphic should be exported.
`java.lang.Float`	`getExportImageQuality()` Deprecated. `GwtFloatVsDouble`
`java.lang.Double`	`getExportImageQualityAsDouble()` If exporting in `JPEG format`, the output JPEG quality level.
`java.lang.String`	`getExportPath()` If `exportToFilesystem` is set, optionally specifies a path to use when saving the file.
`PropertyIdentifier`	`getExportPropertyIdentifier()` Determines the `PropertyIdentifier` to be used in the exported data.
`java.lang.Boolean`	`getExportRawValues()` Whether formatting settings should be applied to data being exported.
`java.lang.Boolean`	`getExportResults()` When set, causes the results of the DSRequest to be exported to a file, whose name and format are indicated by `exportFilename` and `exportAs` respectively.
`java.lang.Boolean`	`getExportShowHeaderSpanTitles()` When you erxport a `ListGrid` that has `headerSpans`, should headerSpans also be exported.
`java.lang.String`	`getExportSpanTitleSeparator()` When you export a `ListGrid` that has `headerSpans` defined and `exportShowHeaderSpanTitles` is true, the behavior is dependent on the export type.
`boolean`	`getExportStreaming()` When exporting to OOXML format (this is the standard file format used by Excel 2007 and later), we default to using streaming mode, for memory efficiency.
`java.lang.String`	`getExportTitleSeparatorChar()` The character with which to replace spaces in field-titles when exporting to XML.
`java.lang.Boolean`	`getExportToClient()` If set, Smart GWT Server will export data back to the client, either as a file download or as content in a new browser window, depending on the setting of `exportDisplay`.
`java.lang.Boolean`	`getExportToFilesystem()` If set, Smart GWT Server will export data to a file on the server filesystem.
`java.lang.Boolean`	`getExportValueFields()` Only applies to request properties passed to `ListGrid.exportClientData()`.
`java.util.Map`	`getFieldValueExpressions()` A set of key:value pairs, mapping field names to expressions that will be evaluated server-side to derive a value for that field.
`java.lang.Boolean`	`getGenerateRelatedUpdates()` Specifies should related updates have to be generated.
`java.lang.String[]`	`getGroupBy()` List of fields to group by when using `server-side summarization`.
`java.util.Map`	`getHeaderData()` For DataSources using SOAP messaging with a WSDL web service, data to be serialized to form SOAP headers, as a map from the header part name to the data.
`java.lang.Boolean`	`getKeepParentsOnFilter()` This property is for advanced use in integrating trees that `load data on demand` using data paging.
`java.lang.String`	`getLineBreakStyle()` The style of line-breaks to use in the exported output.
`Record`	`getOldValues()` For an `update` or `remove` operation, the original values from the record that is being updated or removed.
`java.lang.String`	`getOperationId()` When a `DataBoundComponent` sends a DSRequest, the `dsRequest.operationId` will be automatically picked up from the `fetchOperation`, `addOperation`, etc properties of the DataBoundComponent.
`DSOperationType`	`getOperationType()` Type of operation being performed: "fetch", "add", "remove", "update" or "custom".
`static DSRequest`	`getOrCreateRef(com.google.gwt.core.client.JavaScriptObject jsObj)`
`java.lang.String`	`getOutputs()` The list of fields to return in the response, specified as a comma-separated string (eg, `"foo, bar, baz"`).
`TreeNode`	`getParentNode()` For advanced use in integrating trees that `load data on demand` with web services, `parentNode` is automatically set in "fetch" DSRequests issued by a databound TreeGrid that is loading children for that `parentNode`.
`java.lang.Boolean`	`getPendingAdd()` Indicates that a validation request is being made for a record that will ultimately be saved with an "add" request, as opposed to an "update" request.
`java.lang.Boolean`	`getProgressiveLoading()` Sets `progressive loading mode` for this specific request, overriding the OperationBinding- and DataSource-level settings.
`java.lang.String`	`getRequestId()` Automatically generated unique ID for this request.
`ResultSet`	`getResultSet()` For advanced use in integrating dataset paging with web services, the ResultSet that issued this "fetch" DSRequest is automatically made available as the `resultSet` property.
`ResultTree`	`getResultTree()` For advanced use in integrating trees that `load data on demand` with web services, the ResultTree that issued this "fetch" DSRequest is automatically made available as the `resultTree` property.
`java.lang.Boolean`	`getShouldUseCache()` This is a per-request flag for explicitly controlling whether the cache is used (bypassing it when not wanted, or using it when settings would indicate otherwise).
`SortSpecifier[]`	`getSortBy()` Fieldname to sortBy
`java.lang.Integer`	`getStartRow()` Starting row of requested results, used only with fetch operations.
`boolean`	`getStreamResults()` If true, results will be streamed on the server, rather than all records being read into server memory at once; this approach is appropriate for retrieving or exporting large datasets without swamping the server.
`java.util.Map<java.lang.String,SummaryFunctionType>`	`getSummaryFunctions()` A mapping from field names to summary functions to be applied to each field.
`TextMatchStyle`	`getTextMatchStyle()` For "fetch" operations, how search criteria should be interpreted for text fields: one of "exact" for exact match, "exactCase" for case-sensitive exact match, "startsWith" for matching at the beginning only, or "substring" for substring match.
`java.lang.Boolean`	`getUseFlatFields()` When `useFlatFields` is set for a request to be sent to a WSDL web service, when creating the input XML message to send to the web service, properties in `request.data` will be used as the values for XML elements of the same name, at any level of nesting.
`java.lang.Boolean`	`getUseFlatHeaderFields()` Cause the `useFlatFields` XML serialization behavior to be used for all soap headers in the request.
`java.lang.Boolean`	`getUseStrictJSON()` Should the HTTP response to this request be formatted using the strict JSON subset of the javascript language? If set to true, responses returned by the server should match the format described here.
`ValidationMode`	`getValidationMode()` Mode of validation for entered data.
`void`	`setAdditionalOutputs(java.lang.String additionalOutputs)` For fetch, add or update operation, an optional comma separated list of fields to fetch from another, related DataSource.
`void`	`setAttribute(java.lang.String property, java.lang.Object value)` Set a custom attribute value on the DSRequest as an Object.
`void`	`setCallback(DSCallback callback)`
`void`	`setComponentId(java.lang.String componentId)` For requests submitted by a `DataBoundComponent`, the `Canvas.ID` of the submitting component.
`void`	`setCriteria(Criteria criteria)` This method applies to "fetch" requests only; for update or delete operations pass a Record to setData() which contains primaryKey values as Record attributes.
`void`	`setDataProtocol(DSProtocol dataProtocol)` `DataProtocol` for this particular request.
`void`	`setDataSource(java.lang.String dataSource)` DataSource this DSRequest will act on.
`void`	`setEndRow(java.lang.Integer endRow)` End row of requested results, used only with fetch operations.
`void`	`setExportAs(ExportFormat exportAs)` The format in which the data should be exported.
`void`	`setExportCSS(java.lang.String exportCSS)` When using `RPCManager.exportContent()` to produce a .pdf from a Smart GWT UI, this property allows dynamic CSS to be passed to the server.
`void`	`setExportData(Record... exportData)` Only applies to request properties passed to `ListGrid.exportClientData()`.
`void`	`setExportDatesAsFormattedString(java.lang.Boolean exportDatesAsFormattedString)` When exporting via `ListGrid.exportClientData()` to an `XLS` or `OOXML` spreadsheet, forces dates to export as a string rather than a true date value.
`void`	`setExportDelimiter(java.lang.String exportDelimiter)` The character to use as a field-separator in CSV exports.
`void`	`setExportDisplay(ExportDisplay exportDisplay)` Specifies whether the exported data will be downloaded as an attachment or displayed in a new browser window.
`void`	`setExportFields(java.lang.String... exportFields)` The list of field names to export.
`void`	`setExportFilename(java.lang.String exportFilename)` The name of the file to save the exported data into.
`void`	`setExportFooter(java.lang.String exportFooter)` Optional text to appear at the end of the file.
`void`	`setExportHeader(java.lang.String exportHeader)` Optional text to appear at the beginning of the file.
`void`	`setExportHeaderless(java.lang.Boolean exportHeaderless)` This property allows omitting column names from CSV and Excel exports (no effect on JSON or XML exports).
`void`	`setExportImageFormat(ExportImageFormat exportImageFormat)` The image format in which the SVG graphic should be exported.
`void`	`setExportImageQuality(java.lang.Double exportImageQuality)` If exporting in `JPEG format`, the output JPEG quality level.
`void`	`setExportImageQuality(java.lang.Float exportImageQuality)` Deprecated. `GwtFloatVsDouble`
`void`	`setExportPath(java.lang.String exportPath)` If `exportToFilesystem` is set, optionally specifies a path to use when saving the file.
`void`	`setExportPropertyIdentifier(PropertyIdentifier exportPropertyIdentifier)` Determines the `PropertyIdentifier` to be used in the exported data.
`void`	`setExportRawValues(java.lang.Boolean exportRawValues)` Whether formatting settings should be applied to data being exported.
`void`	`setExportResults(java.lang.Boolean exportResults)` When set, causes the results of the DSRequest to be exported to a file, whose name and format are indicated by `exportFilename` and `exportAs` respectively.
`void`	`setExportShowHeaderSpanTitles(java.lang.Boolean exportShowHeaderSpanTitles)` When you erxport a `ListGrid` that has `headerSpans`, should headerSpans also be exported.
`void`	`setExportSpanTitleSeparator(java.lang.String exportSpanTitleSeparator)` When you export a `ListGrid` that has `headerSpans` defined and `exportShowHeaderSpanTitles` is true, the behavior is dependent on the export type.
`void`	`setExportStreaming(boolean exportStreaming)` When exporting to OOXML format (this is the standard file format used by Excel 2007 and later), we default to using streaming mode, for memory efficiency.
`void`	`setExportTitleSeparatorChar(java.lang.String exportTitleSeparatorChar)` The character with which to replace spaces in field-titles when exporting to XML.
`void`	`setExportToClient(java.lang.Boolean exportToClient)` If set, Smart GWT Server will export data back to the client, either as a file download or as content in a new browser window, depending on the setting of `exportDisplay`.
`void`	`setExportToFilesystem(java.lang.Boolean exportToFilesystem)` If set, Smart GWT Server will export data to a file on the server filesystem.
`void`	`setExportValueFields(java.lang.Boolean exportValueFields)` Only applies to request properties passed to `ListGrid.exportClientData()`.
`void`	`setFieldValueExpressions(java.util.Map fieldValueExpressions)` A set of key:value pairs, mapping field names to expressions that will be evaluated server-side to derive a value for that field.
`void`	`setGenerateRelatedUpdates(java.lang.Boolean generateRelatedUpdates)` Specifies should related updates have to be generated.
`void`	`setGroupBy(java.lang.String... groupBy)` List of fields to group by when using `server-side summarization`.
`void`	`setHeaderData(java.util.Map headerData)` For DataSources using SOAP messaging with a WSDL web service, data to be serialized to form SOAP headers, as a map from the header part name to the data.
`void`	`setKeepParentsOnFilter(java.lang.Boolean keepParentsOnFilter)` This property is for advanced use in integrating trees that `load data on demand` using data paging.
`void`	`setLineBreakStyle(java.lang.String lineBreakStyle)` The style of line-breaks to use in the exported output.
`void`	`setOldValues(com.google.gwt.core.client.JavaScriptObject oldValues)` For an `update` or `remove` operation, the original values from the record that is being updated or removed.
`void`	`setOldValues(java.util.Map oldValues)` For an `update` or `remove` operation, the original values from the record that is being updated or removed.
`void`	`setOldValues(Record oldValues)` For an `update` or `remove` operation, the original values from the record that is being updated or removed.
`void`	`setOperationId(java.lang.String operationId)` When a `DataBoundComponent` sends a DSRequest, the `dsRequest.operationId` will be automatically picked up from the `fetchOperation`, `addOperation`, etc properties of the DataBoundComponent.
`void`	`setOperationType(DSOperationType operationType)` Type of operation being performed: "fetch", "add", "remove", "update" or "custom".
`void`	`setOutputs(java.lang.String outputs)` The list of fields to return in the response, specified as a comma-separated string (eg, `"foo, bar, baz"`).
`void`	`setParams(java.util.Map params)` Values to be sent as simple HTTP params, as a JavaScript Object where each property/value pair will become an HTTP parameter name and value.
`void`	`setPendingAdd(java.lang.Boolean pendingAdd)` Indicates that a validation request is being made for a record that will ultimately be saved with an "add" request, as opposed to an "update" request.
`void`	`setProgressiveLoading(java.lang.Boolean progressiveLoading)` Sets `progressive loading mode` for this specific request, overriding the OperationBinding- and DataSource-level settings.
`void`	`setShouldUseCache(java.lang.Boolean shouldUseCache)` This is a per-request flag for explicitly controlling whether the cache is used (bypassing it when not wanted, or using it when settings would indicate otherwise).
`void`	`setSkinName(java.lang.String skinName)` Set the skin to use.
`void`	`setSortBy(SortSpecifier[] sortSpecifiers)` Fieldnames to sortBy.
`void`	`setStartRow(java.lang.Integer startRow)` Starting row of requested results, used only with fetch operations.
`void`	`setStreamResults(boolean streamResults)` If true, results will be streamed on the server, rather than all records being read into server memory at once; this approach is appropriate for retrieving or exporting large datasets without swamping the server.
`void`	`setSummaryFunctions(java.util.Map<java.lang.String,SummaryFunctionType> summaryFunctions)` A mapping from field names to summary functions to be applied to each field.
`void`	`setTextMatchStyle(TextMatchStyle textMatchStyle)` For "fetch" operations, how search criteria should be interpreted for text fields: one of "exact" for exact match, "exactCase" for case-sensitive exact match, "startsWith" for matching at the beginning only, or "substring" for substring match.
`void`	`setUseFlatFields(java.lang.Boolean useFlatFields)` When `useFlatFields` is set for a request to be sent to a WSDL web service, when creating the input XML message to send to the web service, properties in `request.data` will be used as the values for XML elements of the same name, at any level of nesting.
`void`	`setUseFlatHeaderFields(java.lang.Boolean useFlatHeaderFields)` Cause the `useFlatFields` XML serialization behavior to be used for all soap headers in the request.
`void`	`setUseStrictJSON(java.lang.Boolean useStrictJSON)` Should the HTTP response to this request be formatted using the strict JSON subset of the javascript language? If set to true, responses returned by the server should match the format described here.
`void`	`setValidationMode(ValidationMode validationMode)` Mode of validation for entered data.

Methods inherited from class com.smartgwt.client.rpc.RPCRequest
create, getActionURL, getAllowIE9Leak, getBypassCache, getCallbackParam, getContainsCredentials, getContentType, getData, getDataAsString, getDownloadResult, getDownloadToNewWindow, getEvalResult, getHttpHeaders, getHttpMethod, getHttpProxyURL, getIgnoreTimeout, getOmitNullMapValuesInResponse, getParams, getPrompt, getPromptCursor, getPromptDelay, getPromptStyle, getSendNoQueue, getServerOutputAsString, getShowPrompt, getSuppressAutoDraw, getTimeout, getTransport, getUseHttpProxy, getUseSimpleHttp, getWillHandleError, getWithCredentials, setActionURL, setAllowIE9Leak, setBypassCache, setCallbackParam, setContainsCredentials, setContentType, setData, setData, setData, setData, setDownloadResult, setDownloadToNewWindow, setEvalResult, setEvalVars, setHttpHeaders, setHttpMethod, setHttpProxyURL, setIgnoreTimeout, setOmitNullMapValuesInResponse, setPrompt, setPromptCursor, setPromptDelay, setPromptStyle, setSendNoQueue, setServerOutputAsString, setShowPrompt, setSuppressAutoDraw, setTimeout, setTransport, setUseHttpProxy, setUseSimpleHttp, setWillHandleError, setWithCredentials

Methods inherited from class com.smartgwt.client.core.DataClass
applyFactoryProperties, doAddHandler, fireEvent, getAttribute, getAttributeAsBoolean, getAttributeAsBoolean, getAttributeAsDate, getAttributeAsDouble, getAttributeAsDoubleArray, getAttributeAsFloat, getAttributeAsInt, getAttributeAsIntArray, getAttributeAsJavaScriptObject, getAttributeAsLong, getAttributeAsMap, getAttributeAsObject, getAttributeAsRecord, getAttributeAsString, getAttributeAsStringArray, getAttributes, getHandlerCount, getReadOnly, isFactoryCreated, logConfiguration, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttributeAsJavaObject, setFactoryCreated, setReadOnly

Methods inherited from class com.smartgwt.client.core.JsObject
equals, getJsObj, hashCode, isCreated, setJavaScriptObject, setJsObj

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DSRequest
```
public DSRequest()
```

DSRequest

public DSRequest(com.google.gwt.core.client.JavaScriptObject jsObj)

DSRequest

public DSRequest(DSOperationType operationType)

DSRequest

public DSRequest(DSOperationType operationType,
                 java.lang.String operationId)

DSRequest

public DSRequest(DSOperationType operationType,
                 Record data)

DSRequest

public DSRequest(DSOperationType operationType,
                 java.lang.String operationId,
                 Record data)

DSRequest

public DSRequest(DSOperationType operationType,
                 com.google.gwt.core.client.JavaScriptObject data)

DSRequest

public DSRequest(DSOperationType operationType,
                 java.lang.String operationId,
                 com.google.gwt.core.client.JavaScriptObject data)

DSRequest

public DSRequest(DSOperationType operationType,
                 Criteria criteria)

DSRequest

public DSRequest(DSOperationType operationType,
                 java.lang.String operationId,
                 Criteria criteria)

Method Detail

getOrCreateRef

public static DSRequest getOrCreateRef(com.google.gwt.core.client.JavaScriptObject jsObj)

setAdditionalOutputs
```
public void setAdditionalOutputs(java.lang.String additionalOutputs)
```
For fetch, add or update operation, an optional comma separated list of fields to fetch from another, related DataSource.
Fields should be specified in the format "localFieldName!relatedDataSourceID.relatedDataSourceFieldName". where relatedDataSourceID is the ID of the related dataSource, and relatedDataSourceFieldName is the field for which you want to fetch related values. The returned field values will be stored on the data returned to the client under the specified localFieldName. Note that this will be applied in addition to any specified outputs.
Note that as with DataSourceField.includeFrom, the related dataSource must be linked to the primary datasource via a foreignKey relationship.
Note additionalOutputs sent in request from the browser can be completely disabled in server.properties by setting datasource.allowClientAdditionalOutputs:
```
      datasource.allowClientAdditionalOutputs: false
  
```
In this case additionalOutputs sent from the browser will be cleared before executing request. Note that programatically configured additionalOutputs are always allowed, but you can't modify them from within a DMI method, so the only way to execute a request with additionalOutputs that differ from what was sent by the client is to create a new DSRequest
Note : This is an advanced setting
Parameters:

additionalOutputs - Default value is null

getAdditionalOutputs
```
public java.lang.String getAdditionalOutputs()
```
For fetch, add or update operation, an optional comma separated list of fields to fetch from another, related DataSource.
Fields should be specified in the format "localFieldName!relatedDataSourceID.relatedDataSourceFieldName". where relatedDataSourceID is the ID of the related dataSource, and relatedDataSourceFieldName is the field for which you want to fetch related values. The returned field values will be stored on the data returned to the client under the specified localFieldName. Note that this will be applied in addition to any specified outputs.
Note that as with DataSourceField.includeFrom, the related dataSource must be linked to the primary datasource via a foreignKey relationship.
Note additionalOutputs sent in request from the browser can be completely disabled in server.properties by setting datasource.allowClientAdditionalOutputs:
```
      datasource.allowClientAdditionalOutputs: false
  
```
In this case additionalOutputs sent from the browser will be cleared before executing request. Note that programatically configured additionalOutputs are always allowed, but you can't modify them from within a DMI method, so the only way to execute a request with additionalOutputs that differ from what was sent by the client is to create a new DSRequest
Returns:

String

setComponentId
```
public void setComponentId(java.lang.String componentId)
```
For requests submitted by a DataBoundComponent, the Canvas.ID of the submitting component.
This ID will be present for operations including automatic saves by a ListGrid during editing, or calls to form.saveData(). It will not be present for a direct call to a DataSource method such as DataSource.fetchData().
Note this is the component's String ID - you can retrieve the component itself via Canvas.getById().
This property should be used for debugging purposes only - do not use it to trigger differences in server-side behavior, instead, use operationId because only operationId is considered when assessing request equivalence.

Parameters:

componentId - Default value is null

getComponentId
```
public java.lang.String getComponentId()
```
For requests submitted by a DataBoundComponent, the Canvas.ID of the submitting component.
This ID will be present for operations including automatic saves by a ListGrid during editing, or calls to form.saveData(). It will not be present for a direct call to a DataSource method such as DataSource.fetchData().
Note this is the component's String ID - you can retrieve the component itself via Canvas.getById().
This property should be used for debugging purposes only - do not use it to trigger differences in server-side behavior, instead, use operationId because only operationId is considered when assessing request equivalence.

Returns:

String

setDataProtocol
```
public void setDataProtocol(DSProtocol dataProtocol)
```
DataProtocol for this particular request.
Note: Typically developers should use operation bindings to specify an explicit data protocol for a request.
One exception: advanced developers may wish to have a custom request transformer with entirely client-side handling for some requests. This may be achieved by setting the request's dataProtocol to "clientCustom" within transformRequest, and also triggering application code which will fire DataSource.processResponse() when complete.
The DataSource.getDataProtocol() method may be used to determine what data protocol will be used to handle a specific request based on this property (if set), otherwise the settings at the operationBinding or dataSource levels.

Parameters:

dataProtocol - Default value is null

getDataProtocol
```
public DSProtocol getDataProtocol()
```
DataProtocol for this particular request.
Note: Typically developers should use operation bindings to specify an explicit data protocol for a request.
One exception: advanced developers may wish to have a custom request transformer with entirely client-side handling for some requests. This may be achieved by setting the request's dataProtocol to "clientCustom" within transformRequest, and also triggering application code which will fire DataSource.processResponse() when complete.
The DataSource.getDataProtocol() method may be used to determine what data protocol will be used to handle a specific request based on this property (if set), otherwise the settings at the operationBinding or dataSource levels.

Returns:

DSProtocol

setDataSource
```
public void setDataSource(java.lang.String dataSource)
```
DataSource this DSRequest will act on.
This property is generally automatically populated, for example when calling DataSource.fetchData() the dataSource property is set to the target DataSource.

Parameters:

dataSource - Default value is null

getDataSource
```
public java.lang.String getDataSource()
```
DataSource this DSRequest will act on.
This property is generally automatically populated, for example when calling DataSource.fetchData() the dataSource property is set to the target DataSource.

Returns:

String

setEndRow
```
public void setEndRow(java.lang.Integer endRow)
```
End row of requested results, used only with fetch operations.
Note that startRow and endRow are zero-based, inclusive at the beginning and exclusive at the end (like substring), so startRow: 0, endRow: 1 is a request for the first record.

Parameters:

endRow - Default value is null

getEndRow
```
public java.lang.Integer getEndRow()
```
End row of requested results, used only with fetch operations.
Note that startRow and endRow are zero-based, inclusive at the beginning and exclusive at the end (like substring), so startRow: 0, endRow: 1 is a request for the first record.

Returns:

Integer

setExportAs
```
public void setExportAs(ExportFormat exportAs)
```
The format in which the data should be exported. See ExportFormat for more information.

Parameters:

exportAs - Default value is "csv"

getExportAs
```
public ExportFormat getExportAs()
```
The format in which the data should be exported. See ExportFormat for more information.

Returns:

ExportFormat

setExportCSS
```
public void setExportCSS(java.lang.String exportCSS)
```
When using RPCManager.exportContent() to produce a .pdf from a Smart GWT UI, this property allows dynamic CSS to be passed to the server. Since the exportContent() system already provides a way to specify a custom skin or additional stylesheet for export, exportCSS should only be used for small bits of CSS that are necessarily dynamic.
For example, when printing a very wide page, such as a grid with many columns or a very wide chart, you could send the string "@page {size: A4 landscape; }" as exportCSS to cause the generated PDF to use landscape mode, so that all content fits without clipping.

Parameters:

exportCSS - Default value is null

getExportCSS
```
public java.lang.String getExportCSS()
```
When using RPCManager.exportContent() to produce a .pdf from a Smart GWT UI, this property allows dynamic CSS to be passed to the server. Since the exportContent() system already provides a way to specify a custom skin or additional stylesheet for export, exportCSS should only be used for small bits of CSS that are necessarily dynamic.
For example, when printing a very wide page, such as a grid with many columns or a very wide chart, you could send the string "@page {size: A4 landscape; }" as exportCSS to cause the generated PDF to use landscape mode, so that all content fits without clipping.

Returns:

String

setExportData
```
public void setExportData(Record... exportData)
```
Only applies to request properties passed to ListGrid.exportClientData(). If specified this property contains an arbitrary set of data to be exported.

Parameters:

exportData - Default value is null

getExportData
```
public Record[] getExportData()
```
Only applies to request properties passed to ListGrid.exportClientData(). If specified this property contains an arbitrary set of data to be exported.

Returns:

Record...

setExportDatesAsFormattedString
```
public void setExportDatesAsFormattedString(java.lang.Boolean exportDatesAsFormattedString)
```
When exporting via ListGrid.exportClientData() to an XLS or OOXML spreadsheet, forces dates to export as a string rather than a true date value.
If a date value is provided to a spreadsheet as a string, Excel or other spreadsheet applications may not recognize them as being date values that are valid for use in date-specific functions in formulas, filters, etc.
For this reason, the default behavior of exportClientData is to provide date values to the spreadsheet as true date values. If Format Strings are provided via properties like dataSourceField.format these will be translated to Excel / OpenOffice format strings and used when generating spreadsheets. Other formatting logic, such as cell formatters, will not be used since they cannot be automatically translated to an Excel format string. If no translatable format string is available, date values will be provided to the spreadsheet with no formatter and the spreadsheet program's default formatting for date values will be used.
If exportDatesAsFormattedString is set to true, date fields will appear as strings that exactly match the formatting shown in the DataBoundComponent. As noted above, this means the spreadsheet program will not recognize the value as a date.

Parameters:

exportDatesAsFormattedString - Default value is null

See Also:

ExportFormatting overview and related methods

getExportDatesAsFormattedString
```
public java.lang.Boolean getExportDatesAsFormattedString()
```
When exporting via ListGrid.exportClientData() to an XLS or OOXML spreadsheet, forces dates to export as a string rather than a true date value.
If a date value is provided to a spreadsheet as a string, Excel or other spreadsheet applications may not recognize them as being date values that are valid for use in date-specific functions in formulas, filters, etc.
For this reason, the default behavior of exportClientData is to provide date values to the spreadsheet as true date values. If Format Strings are provided via properties like dataSourceField.format these will be translated to Excel / OpenOffice format strings and used when generating spreadsheets. Other formatting logic, such as cell formatters, will not be used since they cannot be automatically translated to an Excel format string. If no translatable format string is available, date values will be provided to the spreadsheet with no formatter and the spreadsheet program's default formatting for date values will be used.
If exportDatesAsFormattedString is set to true, date fields will appear as strings that exactly match the formatting shown in the DataBoundComponent. As noted above, this means the spreadsheet program will not recognize the value as a date.

Returns:

Boolean

See Also:

ExportFormatting overview and related methods

setExportDelimiter
```
public void setExportDelimiter(java.lang.String exportDelimiter)
```
The character to use as a field-separator in CSV exports. The default delimiter is comma.

Parameters:

exportDelimiter - Default value is ","

getExportDelimiter
```
public java.lang.String getExportDelimiter()
```
The character to use as a field-separator in CSV exports. The default delimiter is comma.

Returns:

String

setExportDisplay
```
public void setExportDisplay(ExportDisplay exportDisplay)
```
Specifies whether the exported data will be downloaded as an attachment or displayed in a new browser window. See ExportDisplay for more information.

Parameters:

exportDisplay - Default value is "download"

getExportDisplay
```
public ExportDisplay getExportDisplay()
```
Specifies whether the exported data will be downloaded as an attachment or displayed in a new browser window. See ExportDisplay for more information.

Returns:

ExportDisplay

setExportFields
```
public void setExportFields(java.lang.String... exportFields)
```
The list of field names to export. If provided, the field list in the exported output is limited and sorted as per the list.
If exportFields is not provided:
- If we are exporting via exportData(), the field list in the exported output is every non-hidden field defined in the DataSource, in DataSource definition order
- If we are exporting via exportClientData() and we are not exporting to OOXML, or we are exporting to OOXML but we are not streaming, the field list in the exported output is based on the client data sent up, taking every row into account (so if there is a value for field "foo" only in row 57, we will output a column "foo", the cells of which are empty except for row 57)
- If we are exporting via exportClientData() and we are exporting to OOXML and streaming is in force (the default for OOXML), the field list in the exported output is based on the client data sent up, taking just the first row into account (so if there is a value for field "foo" only in row 57, we will not output a column "foo" at all)
Parameters:

exportFields - Default value is null

getExportFields
```
public java.lang.String[] getExportFields()
```
The list of field names to export. If provided, the field list in the exported output is limited and sorted as per the list.
If exportFields is not provided:
- If we are exporting via exportData(), the field list in the exported output is every non-hidden field defined in the DataSource, in DataSource definition order
- If we are exporting via exportClientData() and we are not exporting to OOXML, or we are exporting to OOXML but we are not streaming, the field list in the exported output is based on the client data sent up, taking every row into account (so if there is a value for field "foo" only in row 57, we will output a column "foo", the cells of which are empty except for row 57)
- If we are exporting via exportClientData() and we are exporting to OOXML and streaming is in force (the default for OOXML), the field list in the exported output is based on the client data sent up, taking just the first row into account (so if there is a value for field "foo" only in row 57, we will not output a column "foo" at all)
Returns:

String...

setExportFilename
```
public void setExportFilename(java.lang.String exportFilename)
```
The name of the file to save the exported data into. If exportToFilesystem is set, this is the name of the file the server creates on its filesystem. If exportToClient is set, this is the filename that will appear to the browser.
If the exportFilename that you specify does not include an extension, one will be added to it based on the ExportFormat specified by exportAs. Filename is forced to have the correct extension to work around bugs in IE, but if you don't want the filename to be manipulated, use "custom" exportFormat, see example.

Parameters:

exportFilename - Default value is null

See Also:

setExportPath(java.lang.String)

getExportFilename
```
public java.lang.String getExportFilename()
```
The name of the file to save the exported data into. If exportToFilesystem is set, this is the name of the file the server creates on its filesystem. If exportToClient is set, this is the filename that will appear to the browser.
If the exportFilename that you specify does not include an extension, one will be added to it based on the ExportFormat specified by exportAs. Filename is forced to have the correct extension to work around bugs in IE, but if you don't want the filename to be manipulated, use "custom" exportFormat, see example.

Returns:

String

See Also:

getExportPath()

setExportFooter
```
public void setExportFooter(java.lang.String exportFooter)
```
Optional text to appear at the end of the file.

Parameters:

exportFooter - Default value is null

getExportFooter
```
public java.lang.String getExportFooter()
```
Optional text to appear at the end of the file.

Returns:

String

setExportHeader
```
public void setExportHeader(java.lang.String exportHeader)
```
Optional text to appear at the beginning of the file.

Parameters:

exportHeader - Default value is null

getExportHeader
```
public java.lang.String getExportHeader()
```
Optional text to appear at the beginning of the file.

Returns:

String

setExportHeaderless
```
public void setExportHeaderless(java.lang.Boolean exportHeaderless)
```
This property allows omitting column names from CSV and Excel exports (no effect on JSON or XML exports).

Parameters:

exportHeaderless - Default value is false

getExportHeaderless
```
public java.lang.Boolean getExportHeaderless()
```
This property allows omitting column names from CSV and Excel exports (no effect on JSON or XML exports).

Returns:

Boolean

setExportImageFormat
```
public void setExportImageFormat(ExportImageFormat exportImageFormat)
```
The image format in which the SVG graphic should be exported.

Parameters:

exportImageFormat - Default value is "png"

getExportImageFormat
```
public ExportImageFormat getExportImageFormat()
```
The image format in which the SVG graphic should be exported.

Returns:

ExportImageFormat

setExportImageQuality
```
public void setExportImageQuality(java.lang.Float exportImageQuality)
```
Deprecated. GwtFloatVsDouble

If exporting in JPEG format, the output JPEG quality level. This is a number from 0 to 1, with 1 representing the best quality and 0 representing the least quality but smallest file size.

Parameters:

exportImageQuality - Default value is null

getExportImageQuality
```
public java.lang.Float getExportImageQuality()
```
Deprecated. GwtFloatVsDouble

If exporting in JPEG format, the output JPEG quality level. This is a number from 0 to 1, with 1 representing the best quality and 0 representing the least quality but smallest file size.

Returns:

Float

setExportImageQuality
```
public void setExportImageQuality(java.lang.Double exportImageQuality)
```
If exporting in JPEG format, the output JPEG quality level. This is a number from 0 to 1, with 1 representing the best quality and 0 representing the least quality but smallest file size.

Parameters:

exportImageQuality - Default value is null

getExportImageQualityAsDouble
```
public java.lang.Double getExportImageQualityAsDouble()
```
If exporting in JPEG format, the output JPEG quality level. This is a number from 0 to 1, with 1 representing the best quality and 0 representing the least quality but smallest file size.

Returns:

Double

setExportPath
```
public void setExportPath(java.lang.String exportPath)
```
If exportToFilesystem is set, optionally specifies a path to use when saving the file. This path is relative to the default export path, which is set using the server.properties setting export.location; this is the project webRoot by default. For example, with the default setting of export.location, an exportPath of "shared/ds" and an exportFilename of "exportedData.csv", Smart GWT Server would export to file $webRoot/shared/ds/exportedData.csv.
If you do not specify this property, Smart GWT Server will export to the file indicated by exportFilename directly in the default export location.
This property is only applicable when exportToFilesystem is set.

Parameters:

exportPath - Default value is null

See Also:

setExportFilename(java.lang.String)

getExportPath
```
public java.lang.String getExportPath()
```
If exportToFilesystem is set, optionally specifies a path to use when saving the file. This path is relative to the default export path, which is set using the server.properties setting export.location; this is the project webRoot by default. For example, with the default setting of export.location, an exportPath of "shared/ds" and an exportFilename of "exportedData.csv", Smart GWT Server would export to file $webRoot/shared/ds/exportedData.csv.
If you do not specify this property, Smart GWT Server will export to the file indicated by exportFilename directly in the default export location.
This property is only applicable when exportToFilesystem is set.

Returns:

String

See Also:

getExportFilename()

setExportPropertyIdentifier
```
public void setExportPropertyIdentifier(PropertyIdentifier exportPropertyIdentifier)
```
Determines the PropertyIdentifier to be used in the exported data. This essentially means, should we export internal field names like "countryCode" or "EMPLOYEE_NO", or localized descriptive field titles like "code du pays" or "Employee Number". This setting has a lot in common with exportRawValues; both are largely dependent on whether the exported data is intended for direct consumption by an end user (in which case it is appropriate to export formatted values and localized field titles), or for interface to some downstream computer system (in which case you probably want raw, unformatted values and internal field names).
If this property is not set, the following defaults apply:
- If the export format is a native spreadsheet format (XLS or OOXML), localized field titles are used
- If the export format is CSV, XML or JSON and this is a client-driven export (ie it was initiated by a call to exportClientData()), localized field titles are used
- If the export format is CSV, XML or JSON and this is not a client-driven export, internal field names are used
Parameters:

exportPropertyIdentifier - Default value is null

See Also:

ExportFormatting overview and related methods

getExportPropertyIdentifier
```
public PropertyIdentifier getExportPropertyIdentifier()
```
Determines the PropertyIdentifier to be used in the exported data. This essentially means, should we export internal field names like "countryCode" or "EMPLOYEE_NO", or localized descriptive field titles like "code du pays" or "Employee Number". This setting has a lot in common with exportRawValues; both are largely dependent on whether the exported data is intended for direct consumption by an end user (in which case it is appropriate to export formatted values and localized field titles), or for interface to some downstream computer system (in which case you probably want raw, unformatted values and internal field names).
If this property is not set, the following defaults apply:
- If the export format is a native spreadsheet format (XLS or OOXML), localized field titles are used
- If the export format is CSV, XML or JSON and this is a client-driven export (ie it was initiated by a call to exportClientData()), localized field titles are used
- If the export format is CSV, XML or JSON and this is not a client-driven export, internal field names are used
Returns:

PropertyIdentifier

See Also:

ExportFormatting overview and related methods

setExportRawValues
```
public void setExportRawValues(java.lang.Boolean exportRawValues)
```
Whether formatting settings should be applied to data being exported. Default behavior and the effect of setting of exportRawValues is described in the Export Formatting overview.

Parameters:

exportRawValues - Default value is null

See Also:

ExportFormatting overview and related methods

getExportRawValues
```
public java.lang.Boolean getExportRawValues()
```
Whether formatting settings should be applied to data being exported. Default behavior and the effect of setting of exportRawValues is described in the Export Formatting overview.

Returns:

Boolean

See Also:

ExportFormatting overview and related methods

setExportResults
```
public void setExportResults(java.lang.Boolean exportResults)
```
When set, causes the results of the DSRequest to be exported to a file, whose name and format are indicated by exportFilename and exportAs respectively. When no exportFilename is provided, the default is Results.csv and the default value of exportAs is csv.
The export field-list can also be configured, see exportFields. Formats for exported date and numeric are controlled by several settings - see ExportFormatting for an overview.
Once the operation completes, exportDisplay specifies whether the exported data should be downloaded to the file-system or displayed in a new window. The default value of exportDisplay is "download" which displays the Save As dialog. See ExportDisplay for more information.
You can configure the style of line-breaks to use when generating the output, the delimiter to use when exporting to CSV and the separator-character to use in field-titles when exporting to XML.
Additionally, you can output arbitrary text before and after the exported data by setting exportHeader and exportFooter.
Note that for security reasons, an export initiated using dsRequest properties does not provide support for JSON format (see this post for more detail). However, you can use operationBinding.exportAs:"json" in a server-side .ds.xml file to force JSON export to be allowed.
As well as setting dsRequest.exportResults and related properties, exports can be initiated in two other ways, via OperationBindings and via custom server code which sets export-related properties on the DSResponse. Both of those methods support exporting to JSON format.
Format Examples XML format
```
      <List>
          <Object>
              <id>10101</id>
              <displayName>Record 10101</displayName>
          </Object>
     </List>
  
```
JSON Format
```
      [
          { id: 10101, displayName: "Record 10101" }
      ]
  
```
CSV Format
```
      id,displayName
      10101,"Record 10101"
  
```
Parameters:

exportResults - Default value is false

getExportResults
```
public java.lang.Boolean getExportResults()
```
When set, causes the results of the DSRequest to be exported to a file, whose name and format are indicated by exportFilename and exportAs respectively. When no exportFilename is provided, the default is Results.csv and the default value of exportAs is csv.
The export field-list can also be configured, see exportFields. Formats for exported date and numeric are controlled by several settings - see ExportFormatting for an overview.
Once the operation completes, exportDisplay specifies whether the exported data should be downloaded to the file-system or displayed in a new window. The default value of exportDisplay is "download" which displays the Save As dialog. See ExportDisplay for more information.
You can configure the style of line-breaks to use when generating the output, the delimiter to use when exporting to CSV and the separator-character to use in field-titles when exporting to XML.
Additionally, you can output arbitrary text before and after the exported data by setting exportHeader and exportFooter.
Note that for security reasons, an export initiated using dsRequest properties does not provide support for JSON format (see this post for more detail). However, you can use operationBinding.exportAs:"json" in a server-side .ds.xml file to force JSON export to be allowed.
As well as setting dsRequest.exportResults and related properties, exports can be initiated in two other ways, via OperationBindings and via custom server code which sets export-related properties on the DSResponse. Both of those methods support exporting to JSON format.
Format Examples XML format
```
      <List>
          <Object>
              <id>10101</id>
              <displayName>Record 10101</displayName>
          </Object>
     </List>
  
```
JSON Format
```
      [
          { id: 10101, displayName: "Record 10101" }
      ]
  
```
CSV Format
```
      id,displayName
      10101,"Record 10101"
  
```
Returns:

Boolean

setExportShowHeaderSpanTitles
```
public void setExportShowHeaderSpanTitles(java.lang.Boolean exportShowHeaderSpanTitles)
```
When you erxport a ListGrid that has headerSpans, should headerSpans also be exported. See exportSpanTitleSeparator for details of of what it means to export headerSpans to different export targets.

Parameters:

exportShowHeaderSpanTitles - Default value is true

getExportShowHeaderSpanTitles
```
public java.lang.Boolean getExportShowHeaderSpanTitles()
```
When you erxport a ListGrid that has headerSpans, should headerSpans also be exported. See exportSpanTitleSeparator for details of of what it means to export headerSpans to different export targets.

Returns:

Boolean

setExportSpanTitleSeparator
```
public void setExportSpanTitleSeparator(java.lang.String exportSpanTitleSeparator)
```
When you export a ListGrid that has headerSpans defined and exportShowHeaderSpanTitles is true, the behavior is dependent on the export type. Direct exports to Excel formats (both XLS and OOXML) place the headerSpans in merged cells in the spreadsheet, giving the same visual effect as the original ListGrid. This is not possible with exports to CSV format; instead, we alter the exported headers so that they contain the titles of the ancestor headerSpan(s).
For example, if you had a field titled "Population" inside a headerSpan titled "National", nested inside another headerSpan titled "Demographics", that would result in the exported field being titled "Demographics - National - Population".
The exportSpanTitleSeparator property allows you to override the separator string used when constructing these amalgamated headers.

Parameters:

exportSpanTitleSeparator - Default value is " - "

getExportSpanTitleSeparator
```
public java.lang.String getExportSpanTitleSeparator()
```
When you export a ListGrid that has headerSpans defined and exportShowHeaderSpanTitles is true, the behavior is dependent on the export type. Direct exports to Excel formats (both XLS and OOXML) place the headerSpans in merged cells in the spreadsheet, giving the same visual effect as the original ListGrid. This is not possible with exports to CSV format; instead, we alter the exported headers so that they contain the titles of the ancestor headerSpan(s).
For example, if you had a field titled "Population" inside a headerSpan titled "National", nested inside another headerSpan titled "Demographics", that would result in the exported field being titled "Demographics - National - Population".
The exportSpanTitleSeparator property allows you to override the separator string used when constructing these amalgamated headers.

Returns:

String

setExportStreaming
```
public void setExportStreaming(boolean exportStreaming)
```
When exporting to OOXML format (this is the standard file format used by Excel 2007 and later), we default to using streaming mode, for memory efficiency. You can override this for individual exports by setting this flag false. You may wish to do this if you need to grab the spreadsheet object in a DMI and do something with it. The underlying object in use - POI's SXSSFWorkbook - is intended for write only and cannot usefully be read.
You can switch off Excel streaming altogether by setting "excel.useStreaming" false in server.properties.
Note, OOXML is the only native Excel format that supports streaming: when exporting to the older XLS format, we build the spreadsheet in its entirety in server-side memory before writing it to disk or returning it to the client. This is unlikely to change: streaming the XLS format is impractical bcause it is a self-referential binary format, and in any case the problem of huge exports overflowing JVM memory is less likely to arise with XLS, because it is innately limited to 65535 rows.

Parameters:

exportStreaming - Default value is true

getExportStreaming
```
public boolean getExportStreaming()
```
When exporting to OOXML format (this is the standard file format used by Excel 2007 and later), we default to using streaming mode, for memory efficiency. You can override this for individual exports by setting this flag false. You may wish to do this if you need to grab the spreadsheet object in a DMI and do something with it. The underlying object in use - POI's SXSSFWorkbook - is intended for write only and cannot usefully be read.
You can switch off Excel streaming altogether by setting "excel.useStreaming" false in server.properties.
Note, OOXML is the only native Excel format that supports streaming: when exporting to the older XLS format, we build the spreadsheet in its entirety in server-side memory before writing it to disk or returning it to the client. This is unlikely to change: streaming the XLS format is impractical bcause it is a self-referential binary format, and in any case the problem of huge exports overflowing JVM memory is less likely to arise with XLS, because it is innately limited to 65535 rows.

Returns:

boolean

setExportTitleSeparatorChar
```
public void setExportTitleSeparatorChar(java.lang.String exportTitleSeparatorChar)
```
The character with which to replace spaces in field-titles when exporting to XML. If not specified in the request, the server uses "".

Parameters:

exportTitleSeparatorChar - Default value is null

getExportTitleSeparatorChar
```
public java.lang.String getExportTitleSeparatorChar()
```
The character with which to replace spaces in field-titles when exporting to XML. If not specified in the request, the server uses "".

Returns:

String

setExportToClient
```
public void setExportToClient(java.lang.Boolean exportToClient)
```
If set, Smart GWT Server will export data back to the client, either as a file download or as content in a new browser window, depending on the setting of exportDisplay.
Note that it is perfectly valid to specify both this property and exportToFilesystem; in this case the data is both exported to a file on the server filesystem, and downloaded to the client. If you specify neither property, the export no-ops.

Parameters:

exportToClient - Default value is true

getExportToClient
```
public java.lang.Boolean getExportToClient()
```
If set, Smart GWT Server will export data back to the client, either as a file download or as content in a new browser window, depending on the setting of exportDisplay.
Note that it is perfectly valid to specify both this property and exportToFilesystem; in this case the data is both exported to a file on the server filesystem, and downloaded to the client. If you specify neither property, the export no-ops.

Returns:

Boolean

setExportToFilesystem
```
public void setExportToFilesystem(java.lang.Boolean exportToFilesystem)
```
If set, Smart GWT Server will export data to a file on the server filesystem. The file we export to is determined by the exportFilename and exportPath. Note that filesystem exports are disabled by default, for security reasons. To enable them, set export.allow.filesystem to true in your server.properties file. If you enable filesystem exports, you should also consider setting a default export path, as described in the exportPath documentation.
Note that it is perfectly valid to specify both this property and exportToClient; in this case the data is both exported to a file on the server filesystem and downloaded to the client. If you specify neither property, the export no-ops.
It is possible to redirect the filesystem export to make use of an OutputStream you provide. You use this when you want to make some use of the export document other than writing it to a disk file - for example, attaching it to an email or writing it to a database table. See the server-side Javadocs for DSRequest.setExportTo().

Parameters:

exportToFilesystem - Default value is false

getExportToFilesystem
```
public java.lang.Boolean getExportToFilesystem()
```
If set, Smart GWT Server will export data to a file on the server filesystem. The file we export to is determined by the exportFilename and exportPath. Note that filesystem exports are disabled by default, for security reasons. To enable them, set export.allow.filesystem to true in your server.properties file. If you enable filesystem exports, you should also consider setting a default export path, as described in the exportPath documentation.
Note that it is perfectly valid to specify both this property and exportToClient; in this case the data is both exported to a file on the server filesystem and downloaded to the client. If you specify neither property, the export no-ops.
It is possible to redirect the filesystem export to make use of an OutputStream you provide. You use this when you want to make some use of the export document other than writing it to a disk file - for example, attaching it to an email or writing it to a database table. See the server-side Javadocs for DSRequest.setExportTo().

Returns:

Boolean

setExportValueFields
```
public void setExportValueFields(java.lang.Boolean exportValueFields)
```
Only applies to request properties passed to ListGrid.exportClientData(). Ordinarily, any fields that have a displayField defined have the value of that displayFIeld exported, rather than the underlying value in the valueField. If you set this property, we export both the underlying value and the displayField value.

Parameters:

exportValueFields - Default value is null

getExportValueFields
```
public java.lang.Boolean getExportValueFields()
```
Only applies to request properties passed to ListGrid.exportClientData(). Ordinarily, any fields that have a displayField defined have the value of that displayFIeld exported, rather than the underlying value in the valueField. If you set this property, we export both the underlying value and the displayField value.

Returns:

Boolean

setFieldValueExpressions
```
public void setFieldValueExpressions(java.util.Map fieldValueExpressions)
```
A set of key:value pairs, mapping field names to expressions that will be evaluated server-side to derive a value for that field. This property allows for client-driven Transaction Chaining, with some restrictions for security reasons:
- Normal server-side Transaction Chaining settings for a field take precedence over this property, so server-defined rules cannot be overridden from the client
- Arbitrary Velocity expressions are not allowed in DSRequests sent from the client (fieldValueExpressions is also a valid property on a server-side DSRequest, and normal Velocity expressions are allowed in that case - see the server-side Javadoc for DSRequest.setFieldValueExpressions()). For client-originated requests, only the following bindings are allowed - see the Velocity overview for details of what these values mean:
  - $currentDate
  - $transactionDate
  - $userId
  - $masterId - see DSRequestModifier.value for details
  - References to specific fields in prior responses, via $responseData.first and $responseData.last, with or without parameters. For example, $responseData.first("myDataSource", "fetch")[0].myField. See the Velocity overview for details of $responseData
  - References to certain metadata properties of prior responses, via $responses.first and $responses.last, with or without parameters. For example, $responses.last("myDataSource", "fetch").totalRows. Note that the only properties allowed in a client-driven fieldValueExpression are: "startRow", "endRow", "totalRows" and "status"; this restriction does not apply to server-driven fieldValueExpressions. See the Velocity overview for details of $responses
- Normal declarative security rules apply: if a field is not valid for writing, its fieldValueExpression will be ignored. Again, this only applies to client-originated requests.
Note, it is possible to globally disable fieldValueExpression in client-originated requests by setting a flag in your server.properties file:
```
   dataSource.allowClientFieldValueExpressions: false
```
Parameters:

fieldValueExpressions - Default value is null

See Also:

TransactionChaining overview and related methods

getFieldValueExpressions
```
public java.util.Map getFieldValueExpressions()
```
A set of key:value pairs, mapping field names to expressions that will be evaluated server-side to derive a value for that field. This property allows for client-driven Transaction Chaining, with some restrictions for security reasons:
- Normal server-side Transaction Chaining settings for a field take precedence over this property, so server-defined rules cannot be overridden from the client
- Arbitrary Velocity expressions are not allowed in DSRequests sent from the client (fieldValueExpressions is also a valid property on a server-side DSRequest, and normal Velocity expressions are allowed in that case - see the server-side Javadoc for DSRequest.setFieldValueExpressions()). For client-originated requests, only the following bindings are allowed - see the Velocity overview for details of what these values mean:
  - $currentDate
  - $transactionDate
  - $userId
  - $masterId - see DSRequestModifier.value for details
  - References to specific fields in prior responses, via $responseData.first and $responseData.last, with or without parameters. For example, $responseData.first("myDataSource", "fetch")[0].myField. See the Velocity overview for details of $responseData
  - References to certain metadata properties of prior responses, via $responses.first and $responses.last, with or without parameters. For example, $responses.last("myDataSource", "fetch").totalRows. Note that the only properties allowed in a client-driven fieldValueExpression are: "startRow", "endRow", "totalRows" and "status"; this restriction does not apply to server-driven fieldValueExpressions. See the Velocity overview for details of $responses
- Normal declarative security rules apply: if a field is not valid for writing, its fieldValueExpression will be ignored. Again, this only applies to client-originated requests.
Note, it is possible to globally disable fieldValueExpression in client-originated requests by setting a flag in your server.properties file:
```
   dataSource.allowClientFieldValueExpressions: false
```
Returns:

Map

See Also:

TransactionChaining overview and related methods

setGenerateRelatedUpdates

public void setGenerateRelatedUpdates(java.lang.Boolean generateRelatedUpdates)

Specifies should related updates have to be generated. If not set (or set to null) then related updates will be generated only for "add" and "update" operations. This property has to be explicitly set to true to generate related updates for "remove" operation.

This functionality loads related objects from database thus affecting operation performance. For "add" and "update" operations related objects are loaded anyway and performance impact is minimal. Simple "remove" operation does not need to load related objects. Depending on database structure performance impact can be significant if this property is set to true.

Note this feature works only with Hibernate/JPA data sources, see JPA & Hibernate Relations for instructions how to set up relations. Table below uses "country -> cities" sample data model.

Relation and Operation type	Loading complete related objects	Loading related IDs
Many-to-one (cities -> country): ADD/UPDATE	If operation affected country, for example new city added with existing countryId, then relatedUpdate is generated. Otherwise if city is added or updated without countryId set, relatedUpdate is not generated. Note that if provided countryId does not exist, it is created.	Same as with complete related objects, except if provided countryId does not exist, then it is not created, but reset to NULL.
Many-to-one (cities -> country): REMOVE	Removes record, depending on setting generates or not relatedUpdate for parent record. For example if city record is removed and countryId is sent to the server in remove request, then country record will be generated in relatedUpdates.
One-to-many (country -> cities): ADD/UPDATE	If add or update operation provides value sets for cities as well as for country, then cities are created/updated if necessary and relatedUpdates are generated. Note that all fields in cities value sets can be sent to server.	Same as with complete related objects, except you can only sent primary key values for cities.
One-to-many (country -> cities): REMOVE	Removes country, depending on setting returns or not relatedUpdates for the cities of removed country, which can be either REMOVE operations of all cities if cascade enabled, or UPDATE operations setting countryId=null to all cities if cascade is disabled

Note that Many-to-Many works the same way as One-to-Many.

Parameters:: generateRelatedUpdates - Default value is null

getGenerateRelatedUpdates

public java.lang.Boolean getGenerateRelatedUpdates()

Note this feature works only with Hibernate/JPA data sources, see JPA & Hibernate Relations for instructions how to set up relations. Table below uses "country -> cities" sample data model.

Relation and Operation type	Loading complete related objects	Loading related IDs
Many-to-one (cities -> country): ADD/UPDATE	If operation affected country, for example new city added with existing countryId, then relatedUpdate is generated. Otherwise if city is added or updated without countryId set, relatedUpdate is not generated. Note that if provided countryId does not exist, it is created.	Same as with complete related objects, except if provided countryId does not exist, then it is not created, but reset to NULL.
Many-to-one (cities -> country): REMOVE	Removes record, depending on setting generates or not relatedUpdate for parent record. For example if city record is removed and countryId is sent to the server in remove request, then country record will be generated in relatedUpdates.
One-to-many (country -> cities): ADD/UPDATE	If add or update operation provides value sets for cities as well as for country, then cities are created/updated if necessary and relatedUpdates are generated. Note that all fields in cities value sets can be sent to server.	Same as with complete related objects, except you can only sent primary key values for cities.
One-to-many (country -> cities): REMOVE	Removes country, depending on setting returns or not relatedUpdates for the cities of removed country, which can be either REMOVE operations of all cities if cascade enabled, or UPDATE operations setting countryId=null to all cities if cascade is disabled

Note that Many-to-Many works the same way as One-to-Many.

Returns:: Boolean

setGroupBy
```
public void setGroupBy(java.lang.String... groupBy)
```
List of fields to group by when using server-side summarization.
Valid only for an operation of type "fetch". See the Server Summaries overview for details and examples of usage.

Parameters:

groupBy - Default value is null

See Also:

setSummaryFunctions(java.util.Map<java.lang.String, com.smartgwt.client.types.SummaryFunctionType>), ServerSummaries overview and related methods

getGroupBy
```
public java.lang.String[] getGroupBy()
```
List of fields to group by when using server-side summarization.
Valid only for an operation of type "fetch". See the Server Summaries overview for details and examples of usage.

Returns:

String...

See Also:

getSummaryFunctions(), ServerSummaries overview and related methods

setHeaderData
```
public void setHeaderData(java.util.Map headerData)
```
For DataSources using SOAP messaging with a WSDL web service, data to be serialized to form SOAP headers, as a map from the header part name to the data. See WSRequest.headerData for more information.
SOAP headers typically contain request metadata such as a session id for authentication, and so dsRequest.headerData is typically populated by DataSource.transformRequest(), or, for data that applies to every request sent to the server, by WebService.getHeaderData().
Note that this only applies to SOAP headers. General HTTP headers for requests may be modified using RPCRequest.httpHeaders.

Parameters:

headerData - Default value is null

getHeaderData
```
public java.util.Map getHeaderData()
```
For DataSources using SOAP messaging with a WSDL web service, data to be serialized to form SOAP headers, as a map from the header part name to the data. See WSRequest.headerData for more information.
SOAP headers typically contain request metadata such as a session id for authentication, and so dsRequest.headerData is typically populated by DataSource.transformRequest(), or, for data that applies to every request sent to the server, by WebService.getHeaderData().
Note that this only applies to SOAP headers. General HTTP headers for requests may be modified using RPCRequest.httpHeaders.

Returns:

Map

setKeepParentsOnFilter
```
public void setKeepParentsOnFilter(java.lang.Boolean keepParentsOnFilter)
```
This property is for advanced use in integrating trees that load data on demand using data paging. When this flag is set, a server fetch operation is expected to return all of the tree nodes that either match the provided criteria or have one or more children that match the criteria.
A ResultTree with fetchMode:"paged" and with keepParentsOnFilter enabled will automatically set this property to true on all DSRequests that it sends to the server.
Currently, no built-in server-side connectors (SQL, JPA, Hibernate) implement support for the keepParentsOnFilter flag.

Parameters:

keepParentsOnFilter - Default value is null

See Also:

TreeDataBinding overview and related methods

getKeepParentsOnFilter
```
public java.lang.Boolean getKeepParentsOnFilter()
```
This property is for advanced use in integrating trees that load data on demand using data paging. When this flag is set, a server fetch operation is expected to return all of the tree nodes that either match the provided criteria or have one or more children that match the criteria.
A ResultTree with fetchMode:"paged" and with keepParentsOnFilter enabled will automatically set this property to true on all DSRequests that it sends to the server.
Currently, no built-in server-side connectors (SQL, JPA, Hibernate) implement support for the keepParentsOnFilter flag.

Returns:

Boolean

See Also:

TreeDataBinding overview and related methods

setLineBreakStyle
```
public void setLineBreakStyle(java.lang.String lineBreakStyle)
```
The style of line-breaks to use in the exported output. See LineBreakStyle for more information.

Parameters:

lineBreakStyle - Default value is null

getLineBreakStyle
```
public java.lang.String getLineBreakStyle()
```
The style of line-breaks to use in the exported output. See LineBreakStyle for more information.

Returns:

String

setOldValues
```
public void setOldValues(Record oldValues)
```
For an update or remove operation, the original values from the record that is being updated or removed. oldValues is automatically added to DSRequests submitted by DataBound Components. Available on the server via DSRequest.getOldValues().
The server can compare the oldValues to the most recent stored values in order to detect that the user was looking at stale values when the user submitted changes (NOTE: this means of detecting concurrent edit is sometimes called "optimistic concurrency" or "long transactions").
In applications where a policy of "last update wins" is not appropriate when updating certain fields, special UI can be shown for this case. For example, on detecting concurrent edit, the server may send back a special dsResponse.status code that the client application detects, offering the user a choice of proceeding with the operation, discarding edits, or reconciling new and old values in a special interface.

Parameters:

oldValues - Default value is null

getOldValues
```
public Record getOldValues()
```
For an update or remove operation, the original values from the record that is being updated or removed. oldValues is automatically added to DSRequests submitted by DataBound Components. Available on the server via DSRequest.getOldValues().
The server can compare the oldValues to the most recent stored values in order to detect that the user was looking at stale values when the user submitted changes (NOTE: this means of detecting concurrent edit is sometimes called "optimistic concurrency" or "long transactions").
In applications where a policy of "last update wins" is not appropriate when updating certain fields, special UI can be shown for this case. For example, on detecting concurrent edit, the server may send back a special dsResponse.status code that the client application detects, offering the user a choice of proceeding with the operation, discarding edits, or reconciling new and old values in a special interface.

Returns:

Record

setOperationId
```
public void setOperationId(java.lang.String operationId)
```
When a DataBoundComponent sends a DSRequest, the dsRequest.operationId will be automatically picked up from the fetchOperation, addOperation, etc properties of the DataBoundComponent.
The operationId serves as an identifier that you can use to create variations on the 4 basic DataSource operations that are used by different components in different parts of your application. For example, you may be using a standard fetch operation in one part of your application, however on another screen you want to perform a fetch operation on the same DataSource but interpret search criteria differently (eg full text search).
If you declare more than one OperationBinding for the same OperationBinding.operationType, you can specify an operationId on the operationBinding which will cause that operationBinding to be used for dsRequests containing a matching operationId. This allows all the possible settings of an operationBinding, including wsOperation or DMI settings, to be switched on a per-component or per-request basis.
For example, by setting the fetchOperation on a particular ListGrid, you could cause it to invoke a different server method via DMI, different dataURL or different web service operation.
The operationId can also be directly received by the server in order to affect behavior. When using the Smart GWT Server, operationId can be accessed via dsRequest.getOperationId(). The RestDataSource will also send the operationId to the server as part of the request metadata.
Note that if you manually invoke a DataSource operation, you can also specify operationId via the requestProperties parameter.
Note that the operationId has special significance in terms of whether two DSRequests are considered equivalent for caching and synchronization purposes - see DsRequestEquivalence.

Parameters:

operationId - Default value is null

See Also:

Operations overview and related methods

getOperationId
```
public java.lang.String getOperationId()
```
When a DataBoundComponent sends a DSRequest, the dsRequest.operationId will be automatically picked up from the fetchOperation, addOperation, etc properties of the DataBoundComponent.
The operationId serves as an identifier that you can use to create variations on the 4 basic DataSource operations that are used by different components in different parts of your application. For example, you may be using a standard fetch operation in one part of your application, however on another screen you want to perform a fetch operation on the same DataSource but interpret search criteria differently (eg full text search).
If you declare more than one OperationBinding for the same OperationBinding.operationType, you can specify an operationId on the operationBinding which will cause that operationBinding to be used for dsRequests containing a matching operationId. This allows all the possible settings of an operationBinding, including wsOperation or DMI settings, to be switched on a per-component or per-request basis.
For example, by setting the fetchOperation on a particular ListGrid, you could cause it to invoke a different server method via DMI, different dataURL or different web service operation.
The operationId can also be directly received by the server in order to affect behavior. When using the Smart GWT Server, operationId can be accessed via dsRequest.getOperationId(). The RestDataSource will also send the operationId to the server as part of the request metadata.
Note that if you manually invoke a DataSource operation, you can also specify operationId via the requestProperties parameter.
Note that the operationId has special significance in terms of whether two DSRequests are considered equivalent for caching and synchronization purposes - see DsRequestEquivalence.

Returns:

String

See Also:

Operations overview and related methods

setOperationType
```
public void setOperationType(DSOperationType operationType)
```
Type of operation being performed: "fetch", "add", "remove", "update" or "custom".
This property is generally automatically populated, for example when calling fetchData() on a DataSource or DataBound component the operationType is automatically set to "fetch". Note that "custom" operations are never generated automatically, they are always fired by your code.

Parameters:

operationType - Default value is null

getOperationType
```
public DSOperationType getOperationType()
```
Type of operation being performed: "fetch", "add", "remove", "update" or "custom".
This property is generally automatically populated, for example when calling fetchData() on a DataSource or DataBound component the operationType is automatically set to "fetch". Note that "custom" operations are never generated automatically, they are always fired by your code.

Returns:

DSOperationType

setOutputs
```
public void setOutputs(java.lang.String outputs)
```
The list of fields to return in the response, specified as a comma-separated string (eg, "foo, bar, baz"). You can use this property to indicate to the server that you are only interested in a subset of the fields that would normally be returned.
Note that you cannot use this property to request a superset of the fields that would normally be returned, because that would be a security hole. It is possible to configure individual OperationBindings to return extra fields, but this must be done in the server's DataSource descriptor; it cannot be altered on the fly from the client side.

Parameters:

outputs - Default value is null

See Also:

OperationBinding.outputs, setAdditionalOutputs(java.lang.String)

getOutputs
```
public java.lang.String getOutputs()
```
The list of fields to return in the response, specified as a comma-separated string (eg, "foo, bar, baz"). You can use this property to indicate to the server that you are only interested in a subset of the fields that would normally be returned.
Note that you cannot use this property to request a superset of the fields that would normally be returned, because that would be a security hole. It is possible to configure individual OperationBindings to return extra fields, but this must be done in the server's DataSource descriptor; it cannot be altered on the fly from the client side.

Returns:

String

See Also:

OperationBinding.outputs, getAdditionalOutputs()

getParentNode
```
public TreeNode getParentNode()
```
For advanced use in integrating trees that load data on demand with web services, parentNode is automatically set in "fetch" DSRequests issued by a databound TreeGrid that is loading children for that parentNode.
This is sometimes needed if a web service requires that additional properties beyond the ID of the parentNode must be passed in order to accomplished level-by-level loading. A custom implementation of DataSource.transformRequest() can access dsRequest.parentNode and add any such properties to data.
parentNode will also be automatically set by a TreeGrid performing databound reparenting of nodes, as implemented by TreeGrid.folderDrop().
This property can only be read. There is no meaning to setting this property yourself.

Returns:

TreeNode

setPendingAdd
```
public void setPendingAdd(java.lang.Boolean pendingAdd)
```
Indicates that a validation request is being made for a record that will ultimately be saved with an "add" request, as opposed to an "update" request. This context is necessary for some validators because the nature of the validation depends on whether we are adding or updating a record. The system sets this flag when processing interim validations, such as those fired when DynamicForm.validateOnChange is in force.

Parameters:

pendingAdd - Default value is null

getPendingAdd
```
public java.lang.Boolean getPendingAdd()
```
Indicates that a validation request is being made for a record that will ultimately be saved with an "add" request, as opposed to an "update" request. This context is necessary for some validators because the nature of the validation depends on whether we are adding or updating a record. The system sets this flag when processing interim validations, such as those fired when DynamicForm.validateOnChange is in force.

Returns:

Boolean

setProgressiveLoading
```
public void setProgressiveLoading(java.lang.Boolean progressiveLoading)
```
Sets progressive loading mode for this specific request, overriding the OperationBinding- and DataSource-level settings. Note that this setting applies only to fetch requests - it has no effect if specified on any other kind of request.

Parameters:

progressiveLoading - Default value is null

See Also:

DataSource.setProgressiveLoading(java.lang.Boolean), OperationBinding.progressiveLoading, ProgressiveLoading overview and related methods

getProgressiveLoading
```
public java.lang.Boolean getProgressiveLoading()
```
Sets progressive loading mode for this specific request, overriding the OperationBinding- and DataSource-level settings. Note that this setting applies only to fetch requests - it has no effect if specified on any other kind of request.

Returns:

Boolean

See Also:

DataSource.getProgressiveLoading(), OperationBinding.progressiveLoading, ProgressiveLoading overview and related methods

getRequestId
```
public java.lang.String getRequestId()
```
Automatically generated unique ID for this request. This ID will be required by developers making use of the "clientCustom" dataProtocol.

Returns:

String

getResultSet
```
public ResultSet getResultSet()
```
For advanced use in integrating dataset paging with web services, the ResultSet that issued this "fetch" DSRequest is automatically made available as the resultSet property.
This property can only be read. There is no meaning to setting this property yourself.

Returns:

ResultSet

getResultTree
```
public ResultTree getResultTree()
```
For advanced use in integrating trees that load data on demand with web services, the ResultTree that issued this "fetch" DSRequest is automatically made available as the resultTree property.
This property can only be read. There is no meaning to setting this property yourself.

Returns:

ResultTree

setShouldUseCache
```
public void setShouldUseCache(java.lang.Boolean shouldUseCache)
```
This is a per-request flag for explicitly controlling whether the cache is used (bypassing it when not wanted, or using it when settings would indicate otherwise). See DataSource.cacheAllData, DataSource.cacheAllOperationId and DataSource.cacheAcrossOperationIds for caching management for all requests of a dataSource.

Parameters:

shouldUseCache - Default value is null

getShouldUseCache
```
public java.lang.Boolean getShouldUseCache()
```
This is a per-request flag for explicitly controlling whether the cache is used (bypassing it when not wanted, or using it when settings would indicate otherwise). See DataSource.cacheAllData, DataSource.cacheAllOperationId and DataSource.cacheAcrossOperationIds for caching management for all requests of a dataSource.

Returns:

Boolean

setStartRow
```
public void setStartRow(java.lang.Integer startRow)
```
Starting row of requested results, used only with fetch operations. If unset, 0 is assumed.
Note that startRow and endRow are zero-based, inclusive at the beginning and exclusive at the end (like substring), so startRow: 0, endRow: 1 is a request for the first record.

Parameters:

startRow - Default value is null

getStartRow
```
public java.lang.Integer getStartRow()
```
Starting row of requested results, used only with fetch operations. If unset, 0 is assumed.
Note that startRow and endRow are zero-based, inclusive at the beginning and exclusive at the end (like substring), so startRow: 0, endRow: 1 is a request for the first record.

Returns:

Integer

setStreamResults
```
public void setStreamResults(boolean streamResults)
```
If true, results will be streamed on the server, rather than all records being read into server memory at once; this approach is appropriate for retrieving or exporting large datasets without swamping the server.
Although this property can be set without any particular concerns (small datasets can be streamed just as readily as large ones), bear in mind that although streaming enables the processing of very large datasets, processing and downloading very large datasets in a normal client/server flow will very rarely give an acceptable user experience. Streaming is of more practical use in a batch setting - for example, a disconnected export.
Note that streaming requires specific server support; of Smart GWT's built-in DataSource types, only SQLDataSource is able to stream results. This property is ignored by other DataSource types. If you wish to implement the necessary server-side behavior to support streaming with a custom DataSource, see the the server-side Javadocs for DSResponse.hasNextRecord() and DSResponse.nextRecordAsObject().
See also the server-side documentation for DSResponse, SQLDataSource and StreamingResponseIterator.
Note, that streaming results does not support fields with "concat" summary function on non-Oracle databases. Such fields will be skipped.

Parameters:

streamResults - Default value is false

getStreamResults
```
public boolean getStreamResults()
```
If true, results will be streamed on the server, rather than all records being read into server memory at once; this approach is appropriate for retrieving or exporting large datasets without swamping the server.
Although this property can be set without any particular concerns (small datasets can be streamed just as readily as large ones), bear in mind that although streaming enables the processing of very large datasets, processing and downloading very large datasets in a normal client/server flow will very rarely give an acceptable user experience. Streaming is of more practical use in a batch setting - for example, a disconnected export.
Note that streaming requires specific server support; of Smart GWT's built-in DataSource types, only SQLDataSource is able to stream results. This property is ignored by other DataSource types. If you wish to implement the necessary server-side behavior to support streaming with a custom DataSource, see the the server-side Javadocs for DSResponse.hasNextRecord() and DSResponse.nextRecordAsObject().
See also the server-side documentation for DSResponse, SQLDataSource and StreamingResponseIterator.
Note, that streaming results does not support fields with "concat" summary function on non-Oracle databases. Such fields will be skipped.

Returns:

boolean

setTextMatchStyle
```
public void setTextMatchStyle(TextMatchStyle textMatchStyle)
```
For "fetch" operations, how search criteria should be interpreted for text fields: one of "exact" for exact match, "exactCase" for case-sensitive exact match, "startsWith" for matching at the beginning only, or "substring" for substring match. All textMatchStyle settings except "exactCase" are case-insensitive; use AdvancedCriteria for greater control over matching.
This property defaults to the value of DataSource.defaultTextMatchStyle if it is not explicitly provided on the DSRequest. Note, however, that DSRequests issued by ListGrids and other components will generally have a setting for textMatchStyle on the component itself (see ListGrid.autoFetchTextMatchStyle, for example).
This setting is respected by the built-in server-side connectors for SQL, JPA and Hibernate. A custom server-side DataSource implementation should generally respect this flag as well, or server-side filtering will not match client-side filtering, which will require disabling client-side filtering, a huge performance loss.

Parameters:

textMatchStyle - Default value is null

getTextMatchStyle
```
public TextMatchStyle getTextMatchStyle()
```
For "fetch" operations, how search criteria should be interpreted for text fields: one of "exact" for exact match, "exactCase" for case-sensitive exact match, "startsWith" for matching at the beginning only, or "substring" for substring match. All textMatchStyle settings except "exactCase" are case-insensitive; use AdvancedCriteria for greater control over matching.
This property defaults to the value of DataSource.defaultTextMatchStyle if it is not explicitly provided on the DSRequest. Note, however, that DSRequests issued by ListGrids and other components will generally have a setting for textMatchStyle on the component itself (see ListGrid.autoFetchTextMatchStyle, for example).
This setting is respected by the built-in server-side connectors for SQL, JPA and Hibernate. A custom server-side DataSource implementation should generally respect this flag as well, or server-side filtering will not match client-side filtering, which will require disabling client-side filtering, a huge performance loss.

Returns:

TextMatchStyle

setUseFlatFields
```
public void setUseFlatFields(java.lang.Boolean useFlatFields)
```
When useFlatFields is set for a request to be sent to a WSDL web service, when creating the input XML message to send to the web service, properties in request.data will be used as the values for XML elements of the same name, at any level of nesting.
useFlatFields allows you to ignore gratuitous XML message structure, such as extra levels of nested elements, and provides some insulation against changes in the required structure of the input message.
For example, given this input message:
```
  <FindServices>
      <searchFor>search text</searchFor>
      <Options>
          <caseSensitive>false</caseSensitive>
      </Options>
      <IncludeInSearch>
          <serviceName>true</serviceName>
          <documentation>true</documentation>
          <keywords>true</keywords>
      </IncludeInSearch>
  </FindServices>
  
```
If useFlatFields were not set, in order to fill out this message correctly, request.data would need to be:
```
{
     searchFor: "search text",
     Options : {
         caseSensitive: false,
     },
     IncludeInSearch : {
         serviceName: true,
         documentation : true,
         keywords : true
     }
  }
```
However if useFlatFields were set, request.data could be just:
```
{
     searchFor: "search text",
     caseSensitive: false,
     serviceName: true,
     documentation : true,
     keywords : true
  }
```
useFlatFields is often set when the input data comes from a DynamicForm to avoid the cumbersome and fragile process of mapping input fields to an XML structure.
OperationBinding.useFlatFields can also be set to cause all dsRequests of a particular type to useFlatFields automatically.
For DataBoundComponents, component.useFlatFields can be set use "flattened" binding to fields of a WSDL message or XML Schema.
Note that useFlatFields is not generally recommended for use with XML input messages where multiple simple type fields exist with the same name, however if used in this way, the first field to use a given name wins. "first" means the first field encountered in a depth first search. "wins" means only the first field will be populated in the generated XML message.
Parameters:

useFlatFields - Default value is null

getUseFlatFields
```
public java.lang.Boolean getUseFlatFields()
```
When useFlatFields is set for a request to be sent to a WSDL web service, when creating the input XML message to send to the web service, properties in request.data will be used as the values for XML elements of the same name, at any level of nesting.
useFlatFields allows you to ignore gratuitous XML message structure, such as extra levels of nested elements, and provides some insulation against changes in the required structure of the input message.
For example, given this input message:
```
  <FindServices>
      <searchFor>search text</searchFor>
      <Options>
          <caseSensitive>false</caseSensitive>
      </Options>
      <IncludeInSearch>
          <serviceName>true</serviceName>
          <documentation>true</documentation>
          <keywords>true</keywords>
      </IncludeInSearch>
  </FindServices>
  
```
If useFlatFields were not set, in order to fill out this message correctly, request.data would need to be:
```
{
     searchFor: "search text",
     Options : {
         caseSensitive: false,
     },
     IncludeInSearch : {
         serviceName: true,
         documentation : true,
         keywords : true
     }
  }
```
However if useFlatFields were set, request.data could be just:
```
{
     searchFor: "search text",
     caseSensitive: false,
     serviceName: true,
     documentation : true,
     keywords : true
  }
```
useFlatFields is often set when the input data comes from a DynamicForm to avoid the cumbersome and fragile process of mapping input fields to an XML structure.
OperationBinding.useFlatFields can also be set to cause all dsRequests of a particular type to useFlatFields automatically.
For DataBoundComponents, component.useFlatFields can be set use "flattened" binding to fields of a WSDL message or XML Schema.
Note that useFlatFields is not generally recommended for use with XML input messages where multiple simple type fields exist with the same name, however if used in this way, the first field to use a given name wins. "first" means the first field encountered in a depth first search. "wins" means only the first field will be populated in the generated XML message.
Returns:

Boolean

setUseFlatHeaderFields
```
public void setUseFlatHeaderFields(java.lang.Boolean useFlatHeaderFields)
```
Cause the useFlatFields XML serialization behavior to be used for all soap headers in the request. See also headerData.

Parameters:

useFlatHeaderFields - Default value is null

getUseFlatHeaderFields
```
public java.lang.Boolean getUseFlatHeaderFields()
```
Cause the useFlatFields XML serialization behavior to be used for all soap headers in the request. See also headerData.

Returns:

Boolean

setUseStrictJSON
```
public void setUseStrictJSON(java.lang.Boolean useStrictJSON)
```
Should the HTTP response to this request be formatted using the strict JSON subset of the javascript language? If set to true, responses returned by the server should match the format described here.
Only applies to requests sent a server with DataSource.dataFormat set to "json" or "iscServer".

Parameters:

useStrictJSON - Default value is null

getUseStrictJSON
```
public java.lang.Boolean getUseStrictJSON()
```
Should the HTTP response to this request be formatted using the strict JSON subset of the javascript language? If set to true, responses returned by the server should match the format described here.
Only applies to requests sent a server with DataSource.dataFormat set to "json" or "iscServer".

Returns:

Boolean

setValidationMode
```
public void setValidationMode(ValidationMode validationMode)
```
Mode of validation for entered data.

Parameters:

validationMode - Default value is "full"

getValidationMode
```
public ValidationMode getValidationMode()
```
Mode of validation for entered data.

Returns:

ValidationMode

setAttribute
```
public void setAttribute(java.lang.String property,
                         java.lang.Object value)
```
Set a custom attribute value on the DSRequest as an Object. Note that this method converts the Java primitive Object types, Dates and Maps to the underyling JavaScriptObject value. All other object types are set as Object type attributes and users are expected to call DataClass.getAttributeAsObject(String) in order to retrieve them.
These attributes are available for client-side use only - these attributes are not transmitted to the server.
Do not use setAttribute() to set any attribute for which there is a dedicated setter (do not setAttribute("data", data) for example).
If you are looking for a way to send additional data to the server, read DsRequestEquivalence for the best approach.

Overrides:

setAttribute in class DataClass

Parameters:

property - the attribute name

value - the attribute value.

setParams
```
public void setParams(java.util.Map params)
```
Description copied from class: RPCRequest

Values to be sent as simple HTTP params, as a JavaScript Object where each property/value pair will become an HTTP parameter name and value. These parameters are then accessible on the server, for example, using servletRequest.getParameter(paramName) in Java Servlets.
Array-valued parameters will be submitted as multiple instances of the same parameter, similar to an HTML form with a multi-select (?paramName=value1&paramName=value2 ...), accessible as getParameterValues(paramName) in Java Servlets. Any non-atomic type, such as an Object, will be serialized to JSON by the JSONEncoder. If this isn't desirable, serialize the data in advance so that the value provided in rpcRequest.params is a String.
Note that this API is primarily used in combination with useSimpleHttp - when contacting the Smart GWT Server, use data instead, which provides full JavaScript <-> Java translation of arbitrary structures. rpcRequest.params can also be used with the Smart GWT Server, where it provides an an opportunity to send additional data aside from the main data payload. This is useful for adding data to DataSource requests which will be kept separate from the automatically sent DataSource data, or for making parts of the request visible in the URL for HTTP-level logging or layer 4 switches.
Note that in contrast to data object, the data in rpcRequest.params is not deserialized by the Smart GWT server, and all values arrive on the server as String type (like HTTP parameters always do).

Note: The params are submitted once per http transaction. If you are using request queuing to bundle multiple RPCRequests or DSRequests into a single HTTP turnaround, the params from the various RPCRequests will be merged, with the later-queued transactions winning on parameter name collisions. A warning will be logged in the Developer Console if multiple RPCRequests specified params.

Overrides:

setParams in class RPCRequest

Parameters:

params - Default value is null

setCallback

public final void setCallback(DSCallback callback)

setSortBy
```
public void setSortBy(SortSpecifier[] sortSpecifiers)
```
Fieldnames to sortBy.

Parameters:

sortSpecifiers - Default value is null

getSortBy
```
public SortSpecifier[] getSortBy()
```
Fieldname to sortBy

Returns:

SortSpecifier array

setSummaryFunctions
```
public void setSummaryFunctions(java.util.Map<java.lang.String,SummaryFunctionType> summaryFunctions)
```
A mapping from field names to summary functions to be applied to each field.
Valid only for an operation of type "fetch". See the Server Summaries overview in the client-side documentation for details and examples of usage.
NOTE: this feature is supported only in Power Edition or above, and only when using the built-in SQL, JPA or Hibernate connectors.

Parameters:

summaryFunctions - Map<String,SummaryFunction> with field names as keys and summary functions as values.

See Also:

DSRequest.setGroupBy(String[])

getSummaryFunctions
```
public java.util.Map<java.lang.String,SummaryFunctionType> getSummaryFunctions()
```
A mapping from field names to summary functions to be applied to each field.
Valid only for an operation of type "fetch". See the Server Summaries overview in the client-side documentation for details and examples of usage.
NOTE: this feature is supported only in Power Edition or above, and only when using the built-in SQL, JPA or Hibernate connectors.

Returns:

Map<String,SummaryFunction> with field names as keys and summary functions as values.

See Also:

DSRequest.getGroupBy()

setOldValues
```
public void setOldValues(java.util.Map oldValues)
```
For an update or remove operation, the original values from the record that is being updated or removed. oldValues is automatically added to DSRequests submitted by DataBound Components. Available on the server via DSRequest.getOldValues().
The server can compare the oldValues to the most recent stored values in order to detect that the user was looking at stale values when the user submitted changes (NOTE: this means of detecting concurrent edit is sometimes called "optimistic concurrency" or "long transactions").
In applications where a policy of "last update wins" is not appropriate when updating certain fields, special UI can be shown for this case. For example, on detecting concurrent edit, the server may send back a special dsResponse.status code that the client application detects, offering the user a choice of proceeding with the operation, discarding edits, or reconciling new and old values in a special interface.

Parameters:

oldValues - oldValues Default value is null

setOldValues
```
public void setOldValues(com.google.gwt.core.client.JavaScriptObject oldValues)
```
For an update or remove operation, the original values from the record that is being updated or removed. oldValues is automatically added to DSRequests submitted by DataBound Components. Available on the server via DSRequest.getOldValues().
The server can compare the oldValues to the most recent stored values in order to detect that the user was looking at stale values when the user submitted changes (NOTE: this means of detecting concurrent edit is sometimes called "optimistic concurrency" or "long transactions").
In applications where a policy of "last update wins" is not appropriate when updating certain fields, special UI can be shown for this case. For example, on detecting concurrent edit, the server may send back a special dsResponse.status code that the client application detects, offering the user a choice of proceeding with the operation, discarding edits, or reconciling new and old values in a special interface.

Parameters:

oldValues - oldValues Default value is null

getCriteria
```
public Criteria getCriteria()
                     throws java.lang.IllegalStateException
```
Return the Criteria associated with a FETCH operation.
Note : This method should only be called during a FETCH operation

Returns:

the criteria

Throws:

java.lang.IllegalStateException - if called for a non-fetch operation

setSkinName
```
public void setSkinName(java.lang.String skinName)
```
Set the skin to use. For example: Enterprise

Parameters:

skinName - the name of the selected skin.

setCriteria
```
public void setCriteria(Criteria criteria)
```
This method applies to "fetch" requests only; for update or delete operations pass a Record to setData() which contains primaryKey values as Record attributes.

Parameters:

criteria - the criteria to store.

Class DSRequest

Field Summary

Fields inherited from class com.smartgwt.client.core.DataClass

Fields inherited from class com.smartgwt.client.core.JsObject

Constructor Summary

Method Summary

Methods inherited from class com.smartgwt.client.rpc.RPCRequest

Methods inherited from class com.smartgwt.client.core.DataClass

Methods inherited from class com.smartgwt.client.core.JsObject

Methods inherited from class java.lang.Object

Constructor Detail

DSRequest

DSRequest

DSRequest

DSRequest

DSRequest

DSRequest

DSRequest

DSRequest

DSRequest

DSRequest

Method Detail

getOrCreateRef

setAdditionalOutputs

getAdditionalOutputs

setComponentId

getComponentId

setDataProtocol

getDataProtocol

setDataSource

getDataSource

setEndRow

getEndRow

setExportAs

getExportAs

setExportCSS

getExportCSS

setExportData

getExportData

setExportDatesAsFormattedString

getExportDatesAsFormattedString

setExportDelimiter

getExportDelimiter

setExportDisplay

getExportDisplay

setExportFields

getExportFields

setExportFilename

getExportFilename

setExportFooter

getExportFooter

setExportHeader

getExportHeader

setExportHeaderless

getExportHeaderless

setExportImageFormat

getExportImageFormat

setExportImageQuality

getExportImageQuality

setExportImageQuality

getExportImageQualityAsDouble

setExportPath

getExportPath

setExportPropertyIdentifier

getExportPropertyIdentifier

setExportRawValues

getExportRawValues

setExportResults

getExportResults

setExportShowHeaderSpanTitles

getExportShowHeaderSpanTitles

setExportSpanTitleSeparator

getExportSpanTitleSeparator

setExportStreaming

getExportStreaming

setExportTitleSeparatorChar

getExportTitleSeparatorChar

setExportToClient

getExportToClient

setExportToFilesystem