/*
* JBoss, Home of Professional Open Source
*
* Distributable under LGPL license.
* See terms of license at gnu.org.
*/
package org.jboss.seam.bpm;
import static org.jboss.seam.annotations.Install.BUILT_IN;
import org.jboss.seam.Component;
import org.jboss.seam.ScopeType;
import org.jboss.seam.annotations.Install;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Scope;
import org.jboss.seam.annotations.Unwrap;
import org.jboss.seam.annotations.intercept.BypassInterceptors;
import org.jboss.seam.contexts.Contexts;
import org.jboss.seam.util.Work;
/**
* A Seam component that allows injection of the current
* jBPM TaskInstance.
*
* @author Gavin King
*/
@Scope(ScopeType.STATELESS)
@Name("org.jboss.seam.bpm.taskInstance")
@BypassInterceptors
@Install(precedence=BUILT_IN, dependencies="org.jboss.seam.bpm.jbpm")
public class TaskInstance
{
@Unwrap
public org.jbpm.taskmgmt.exe.TaskInstance getTaskInstance() throws Exception
{
if ( !Contexts.isConversationContextActive() ) return null;
return new Work<org.jbpm.taskmgmt.exe.TaskInstance>()
{
@Override
protected org.jbpm.taskmgmt.exe.TaskInstance work() throws Exception
{
Long taskId = BusinessProcess.instance().getTaskId();
if (taskId!=null)
{
//TODO: do we need to cache this??
return ManagedJbpmContext.instance().getTaskInstanceForUpdate(taskId);
}
else
{
return null;
}
}
}.workInTransaction();
}
public static org.jbpm.taskmgmt.exe.TaskInstance instance()
{
if ( !Contexts.isConversationContextActive() || !BusinessProcess.instance().hasCurrentTask() ) return null; //so we don't start a txn
return (org.jbpm.taskmgmt.exe.TaskInstance) Component.getInstance(TaskInstance.class, ScopeType.STATELESS);
}
}