org.camunda.bpm.engine.impl.delegate
Class DelegateInvocation

java.lang.Object
  org.camunda.bpm.engine.impl.delegate.DelegateInvocation

Direct Known Subclasses:

ActivityBehaviorInvocation, ActivityBehaviorSignalInvocation, CaseExecutionListenerInvocation, CaseVariableListenerInvocation, CreateStartFormInvocation, CreateTaskFormInvocation, ExecutionListenerInvocation, ExpressionInvocation, FormFieldValidatorInvocation, JavaDelegateInvocation, ScriptInvocation, SubmitFormVariablesInvocation, TaskListenerInvocation

public abstract class DelegateInvocation
extends Object

Provides context about the invocation of usercode and handles the actual invocation

Author:

Daniel Meyer

See Also:

DelegateInterceptor

Field Summary

protected BaseDelegateExecution	contextExecution
protected Object[]	invocationParameters
protected Object	invocationResult

Constructor Summary

DelegateInvocation()

Method Summary

BaseDelegateExecution	getContextExecution() returns the execution in which context this delegate is invoked.
Object[]	getInvocationParameters()
Object	getInvocationResult()
abstract Object	getTarget() returns the target of the current invocation, ie.
protected abstract void	invoke()
void	proceed() make the invocation proceed, performing the actual invocation of the user code.

Methods inherited from class java.lang.Object

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

Field Detail

invocationResult

protected Object invocationResult

invocationParameters

protected Object[] invocationParameters

contextExecution

protected BaseDelegateExecution contextExecution

Constructor Detail

DelegateInvocation

public DelegateInvocation()

Method Detail

proceed

public void proceed()
             throws Exception

make the invocation proceed, performing the actual invocation of the user code.

Throws:

Exception - the exception thrown by the user code

invoke

protected abstract void invoke()
                        throws Exception

Throws:

Exception

getInvocationResult

public Object getInvocationResult()

Returns:

the result of the invocation (can be null if the invocation does not return a result)

getInvocationParameters

public Object[] getInvocationParameters()

Returns:

an array of invocation parameters (null if the invocation takes no parameters)

getTarget

public abstract Object getTarget()

returns the target of the current invocation, ie. JavaDelegate, ValueExpression ...

getContextExecution

public BaseDelegateExecution getContextExecution()

returns the execution in which context this delegate is invoked. may be null