com.smartgwt.client.util.workflow

Class ScriptTask

java.lang.Object

com.smartgwt.client.core.BaseClass

com.smartgwt.client.util.workflow.ProcessElement

com.smartgwt.client.util.workflow.Task

com.smartgwt.client.util.workflow.ScriptTask

All Implemented Interfaces:

com.google.gwt.event.shared.HasHandlers

Direct Known Subclasses:

StartProcessTask

public class ScriptTask
extends Task

Task that executes arbitrary code, either synchronous or asynchronous. Override the execute() method to provide custom logic.

Field Summary

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

config, configOnly, factoryCreated, factoryProperties, id, scClassName

Constructor Summary

Constructors

Constructor and Description
ScriptTask()
ScriptTask(com.google.gwt.core.client.JavaScriptObject jsObj)
ScriptTask(java.lang.String ID)
ScriptTask(java.lang.String ID, ProcessElement nextElement)
ScriptTask(java.lang.String ID, java.lang.String nextElement)

Method Summary

Modifier and Type	Method and Description
com.google.gwt.core.client.JavaScriptObject	create()
java.lang.Object	execute(java.lang.Object input, Record inputRecord) Execute the task.
java.lang.Object	getInputData() Get the inputs to this task as specified by Task.inputField.
Record	getInputRecord() Get all inputs to the task as specified by the inputFieldList, as a Record.
java.lang.Boolean	getIsAsync() Whether the script task is asynchronous.
static ScriptTask	getOrCreateRef(com.google.gwt.core.client.JavaScriptObject jsObj)
java.lang.Boolean	getPassThruOutput() Does this processElement pass through output from the last executed task (i.e.
Process	getProcess() Get the process executing this task instance.
protected void	onInit_ScriptTask()
protected void	onInit()
ScriptTask	setIsAsync(java.lang.Boolean isAsync) Whether the script task is asynchronous.
void	setOutputData(java.lang.Object taskOutput) Set the task output as specified by outputField.
void	setOutputRecord(Record outputRecord) Set all outputs of the task as specified by the outputFieldList, by providing a Record.
ScriptTask	setPassThruOutput(java.lang.Boolean passThruOutput) Does this processElement pass through output from the last executed task (i.e.

Methods inherited from class com.smartgwt.client.util.workflow.Task

getInputField, getInputFieldList, getOutputExpression, getOutputField, getOutputFieldList, setInputField, setInputFieldList, setOutputExpression, setOutputField, setOutputFieldList

Methods inherited from class com.smartgwt.client.util.workflow.ProcessElement

convertToJavaScriptArray, getClassDescription, getDescription, getEditorType, getElementDescription, getID, getJsObj, getNextElement, getOrCreateJsObj, getProcessElements, getTitle, isCreated, setAttribute, setClassDescription, setDescription, setEditorType, setID, setJavaScriptObject, setNextElement, setTitle

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

addDynamicProperty, addDynamicProperty, addDynamicProperty, applyFactoryProperties, asSGWTComponent, clearDynamicProperty, createJsObj, destroy, doAddHandler, doInit, error, error, errorIfNotCreated, fireEvent, getAttribute, getAttributeAsBoolean, getAttributeAsDate, getAttributeAsDouble, getAttributeAsElement, getAttributeAsFloat, getAttributeAsInt, getAttributeAsJavaScriptObject, getAttributeAsMap, getAttributeAsString, getAttributeAsStringArray, getClassName, getConfig, getHandlerCount, getRef, getRuleScope, getScClassName, getTestInstance, hasAutoAssignedID, hasDynamicProperty, internalSetID, internalSetID, isConfigOnly, isFactoryCreated, onBind, registerID, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setConfig, setConfigOnly, setFactoryCreated, setProperty, setProperty, setProperty, setProperty, setRuleScope, setScClassName

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ScriptTask

public ScriptTask()

ScriptTask

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

ScriptTask

public ScriptTask(java.lang.String ID)

ScriptTask

public ScriptTask(java.lang.String ID,
                  java.lang.String nextElement)

ScriptTask

public ScriptTask(java.lang.String ID,
                  ProcessElement nextElement)

Method Detail

getOrCreateRef

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

create

public com.google.gwt.core.client.JavaScriptObject create()

Overrides:

create in class Task

setIsAsync

public ScriptTask setIsAsync(java.lang.Boolean isAsync)
                      throws java.lang.IllegalStateException

Whether the script task is asynchronous. A synchronous task is expected to return data directly from execute() and is considered complete once the execute() method exits.

An asnychronous task is expected to start processing in execute(), and will not be considered complete until either setOutputData() or setOutputRecord() is called.

Parameters:

isAsync - New isAsync value. Default value is false

Returns:

ScriptTask instance, for chaining setter calls

Throws:

java.lang.IllegalStateException - this property cannot be changed after the underlying component has been created

getIsAsync

public java.lang.Boolean getIsAsync()

Whether the script task is asynchronous. A synchronous task is expected to return data directly from execute() and is considered complete once the execute() method exits.

An asnychronous task is expected to start processing in execute(), and will not be considered complete until either setOutputData() or setOutputRecord() is called.

Returns:

Current isAsync value. Default value is false

setPassThruOutput

public ScriptTask setPassThruOutput(java.lang.Boolean passThruOutput)
                             throws java.lang.IllegalStateException

Does this processElement pass through output from the last executed task (i.e. transient state)? See taskInputExpressions for details on the transient state.

Overrides:

setPassThruOutput in class ProcessElement

Parameters:

passThruOutput - New passThruOutput value. Default value is false

Returns:

ScriptTask instance, for chaining setter calls

Throws:

java.lang.IllegalStateException - this property cannot be changed after the underlying component has been created

getPassThruOutput

public java.lang.Boolean getPassThruOutput()

Does this processElement pass through output from the last executed task (i.e. transient state)? See taskInputExpressions for details on the transient state.

Overrides:

getPassThruOutput in class ProcessElement

Returns:

Current passThruOutput value. Default value is false

execute

public java.lang.Object execute(java.lang.Object input,
                                Record inputRecord)

Execute the task.

Parameters:

input - the task input

inputRecord - the task input record if an inputFieldList was specified. See TaskIO

Returns:

the task output. For multiple field output, call setOutputRecord() instead, and return null

getInputData

public java.lang.Object getInputData()

Get the inputs to this task as specified by Task.inputField.

For a task with a inputFieldList, use getInputRecord() to get access to other inputs.

Returns:

input data

See Also:

TaskIO overview and related methods

getInputRecord

public Record getInputRecord()

Get all inputs to the task as specified by the inputFieldList, as a Record.

Returns:

input data

See Also:

TaskIO overview and related methods

getProcess

public Process getProcess()

Get the process executing this task instance.

Returns:

the owning process

setOutputRecord

public void setOutputRecord(Record outputRecord)

Set all outputs of the task as specified by the outputFieldList, by providing a Record.

Parameters:

outputRecord - output record

See Also:

TaskIO overview and related methods

setOutputData

public void setOutputData(java.lang.Object taskOutput)

Set the task output as specified by outputField.

NOTE: for an asychronous task, calling setOutputData() indicates the task is complete. For a task with multiple outputs, call ScriptTask.setOutputRecord instead.

Parameters:

taskOutput - task output

onInit_ScriptTask

protected void onInit_ScriptTask()

onInit

protected void onInit()

Overrides:

onInit in class ProcessElement