/*
* Copyright 2011 Red Hat, Inc. and/or its affiliates.
*
* 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.drools.examples.workitemconsequence;
import org.kie.internal.KnowledgeBase;
import org.kie.internal.KnowledgeBaseFactory;
import org.kie.internal.builder.KnowledgeBuilder;
import org.kie.internal.builder.KnowledgeBuilderFactory;
import org.kie.internal.io.ResourceFactory;
import org.kie.api.io.ResourceType;
import org.kie.internal.runtime.StatefulKnowledgeSession;
import org.kie.api.runtime.process.WorkItem;
import org.kie.api.runtime.process.WorkItemHandler;
import org.kie.api.runtime.process.WorkItemManager;
/**
* A simple demonstration of using a Work Item handler as an action
*/
public class WorkItemConsequenceExample2 {
public static void main(final String[] args) {
final KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add( ResourceFactory.newClassPathResource( "WorkItemConsequence2.drl",
WorkItemConsequenceExample2.class ),
ResourceType.DRL );
final KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );
if ( kbuilder.hasErrors() ) {
throw new RuntimeException( "Compilation error.\n" + kbuilder.getErrors().toString() );
}
final StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
ksession.getWorkItemManager().registerWorkItemHandler( "GreetingWorkItemHandler",
new GreetingWorkItemHandler() );
// KnowledgeRuntimeLogger logger = KnowledgeRuntimeLoggerFactory.newFileLogger(ksession, "log/WorkItemConsequence2.log");
ksession.insert( new Greeting( "Michael" ) );
ksession.fireAllRules();
// logger.close();
ksession.dispose(); // Stateful rule session must always be disposed when finished
}
public static class Greeting {
private String name;
private String response;
public Greeting(String name) {
this.name = name;
}
public String getName() {
return this.name;
}
public void setResponse(String response) {
this.response = response;
}
public String getResponse() {
return this.response;
}
}
public static class GreetingWorkItemHandler
implements
WorkItemHandler {
public void executeWorkItem(WorkItem workItem,
WorkItemManager manager) {
String name = (String) workItem.getParameter( "name" );
String response = "Hello, " + name;
workItem.getResults().put( "response",
response );
}
public void abortWorkItem(WorkItem workItem,
WorkItemManager manager) {
}
}
}