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, DecisionTableInvocation, ExecutionListenerInvocation, ExpressionGetInvocation, ExpressionSetInvocation, 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 ResourceDefinitionEntity	contextResource
protected Object	invocationResult

Constructor Summary

DelegateInvocation(BaseDelegateExecution contextExecution, ResourceDefinitionEntity contextResource)
Provide a context execution or resource definition in which context the invocation should be performed.

Method Summary

BaseDelegateExecution	getContextExecution() returns the execution in which context this delegate is invoked.
ResourceDefinitionEntity	getContextResource()
Object	getInvocationResult()
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

contextExecution

protected BaseDelegateExecution contextExecution

contextResource

protected ResourceDefinitionEntity contextResource

Constructor Detail

DelegateInvocation

public DelegateInvocation(BaseDelegateExecution contextExecution,
                          ResourceDefinitionEntity contextResource)

Provide a context execution or resource definition in which context the invocation should be performed. If both parameters are null, the invocation is performed in the current context.

Parameters:

contextExecution - set to an execution

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)

getContextExecution

public BaseDelegateExecution getContextExecution()

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

getContextResource

public ResourceDefinitionEntity getContextResource()