/**
* Copyright 2010 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jbpm.task;
import java.io.Serializable;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import org.drools.runtime.process.WorkItem;
import org.drools.runtime.process.WorkItemHandler;
import org.drools.runtime.process.WorkItemManager;
import org.mvel2.MVEL;
import org.mvel2.compiler.ExpressionCompiler;
public class WorkItemNotification {
private String workItemExp;
private WorkItemHandler workItemHandler;
private String docVar = "doc";
public void executeWorkItem(Task task,
Notification notification,
List<OrganizationalEntity> recipients,
List<OrganizationalEntity> businessAdministrators,
WorkItemManager workItemManager,
EntityManagerFactory emf) {
EntityManager em = emf.createEntityManager();
TaskData taskData = task.getTaskData();
// First compile the associated document, we assume this returns a single structure
// That can be used in the main work item evaluation.
Content content = null;
if ( taskData.getDocumentAccessType() == AccessType.Inline ) {
content = em.find( Content.class,
taskData.getDocumentContentId() );
}
ExpressionCompiler compiler = new ExpressionCompiler( new String( content.getContent() ) );
Serializable expr = compiler.compile();
Object object = MVEL.executeExpression( expr );
Map<String, Object> vars = new HashMap<String, Object>();
vars.put( docVar, object );
// for now will have to assume the recipient is a User, we need to figure out if Groups have an alias
// of if we list all the individuals in the gruop.
for ( OrganizationalEntity recipient : recipients ) {
vars.put( "user", recipient );
WorkItem workItem = (WorkItem) MVEL.executeExpression( expr, vars );
workItemHandler.executeWorkItem( workItem, workItemManager );
}
}
}