com.smartgwt.client.types

Enum DSDataFormat

java.lang.Object

java.lang.Enum<DSDataFormat>

com.smartgwt.client.types.DSDataFormat

All Implemented Interfaces:

ValueEnum, java.io.Serializable, java.lang.Comparable<DSDataFormat>

public enum DSDataFormat
extends java.lang.Enum<DSDataFormat>
implements ValueEnum

Indicates the format to be used for HTTP requests and responses when fulfilling DSRequests (eg, when DataSource.fetchData() is called).

Note that request queuing is only available for "iscServer" requests.

Enum Constant Summary

Enum Constants

Enum Constant and Description
CUSTOM Smart GWT will not attempt to parse the response, instead, DataSource.transformResponse() must be implemented.
ISCSERVER Make an HTTP request in a format recognized by the ISC server and expect ISC server response format.
JSON Expect response in JSON (Java Script Object Notation) format, ready to be eval()'d.
XML Expect XML responses.

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.String	getValue()
static DSDataFormat	valueOf(java.lang.String name) Returns the enum constant of this type with the specified name.
static DSDataFormat[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

ISCSERVER

public static final DSDataFormat ISCSERVER

Make an HTTP request in a format recognized by the ISC server and expect ISC server response format. Server-side integration can then be used to connect to any kind of data store or web service.

If this enumerated value is used in a Component XML file or server-side DataSource descriptor (.ds.xml file), use the value "iscServer".

XML

public static final DSDataFormat XML

Expect XML responses. Request format depends on the setting for protocol. This is the correct setting when consuming RSS feeds, XML web services (whether SOAP, REST, XML-RPC or custom format), and XML flat files directly from the browser.

Values for "date", "time" or "datetime" fields in responses should be specified in the applicable XML Schema date format. If no timezone is explicitly specified, dates / datetimes received by the client are assumed to be GMT. Note that "date" type fields represent logical dates and may omit time information entirely, and "time" type fields may omit date information. See Date and Time Format and storage for more information on how date values are serialized in requests sent to the server.

A DSResponse will be derived from the returned XML via the process described under DataSource.transformResponse().

If this enumerated value is used in a Component XML file or server-side DataSource descriptor (.ds.xml file), use the value "xml".

JSON

public static final DSDataFormat JSON

Expect response in JSON (Java Script Object Notation) format, ready to be eval()'d. Response should either be a naked object literal:

  { "property":"value1", "property2" : "value2", ... }
  

or a string that evals to return a valid response object:

  var response = { "property":"value1", "property2" : "value2", ... }
  response;
  

A DSResponse will be derived from the returned JSON via the process described under DataSource.transformResponse().

As with "xml" responses, values for "date" or "datetime" fields should be specified as a String in XML Schema date format and may include a timezone. In the absence of a timezone they will be assumed to be GMT.

Request format depends on the setting for protocol. See also XJSONDataSource.

If this enumerated value is used in a Component XML file or server-side DataSource descriptor (.ds.xml file), use the value "json".

CUSTOM

public static final DSDataFormat CUSTOM

Smart GWT will not attempt to parse the response, instead, DataSource.transformResponse() must be implemented. transformResponse will receive the "data" parameter as a String, and must parse this String into an Array of Objects, which should be set as data. Request format depends on the setting for protocol.

Note that, unlike either the "json" or "xml" settings of dataFormat, you are responsible for ensuring that parsed values are the correct type, for example, using the JavaScript built-ins parseInt and parseFloat on integer and decimal values respectively, and using new Date() to construct valid Dates.

If this enumerated value is used in a Component XML file or server-side DataSource descriptor (.ds.xml file), use the value "custom".

Method Detail

values

public static DSDataFormat[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (DSDataFormat c : DSDataFormat.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static DSDataFormat valueOf(java.lang.String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

java.lang.IllegalArgumentException - if this enum type has no constant with the specified name

java.lang.NullPointerException - if the argument is null

getValue

public java.lang.String getValue()

Specified by:

getValue in interface ValueEnum