/**
* 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.process.instance.impl.factory;
import org.jbpm.process.core.Context;
import org.jbpm.process.instance.ContextInstance;
import org.jbpm.process.instance.ContextInstanceContainer;
import org.jbpm.process.instance.ProcessInstance;
import org.jbpm.process.instance.context.AbstractContextInstance;
import org.jbpm.process.instance.impl.ContextInstanceFactory;
public class ReuseContextInstanceFactory implements ContextInstanceFactory {
public final Class<? extends ContextInstance> cls;
public ReuseContextInstanceFactory(Class<? extends ContextInstance> cls){
this.cls = cls;
}
public ContextInstance getContextInstance(Context context, ContextInstanceContainer contextInstanceContainer, ProcessInstance processInstance) {
ContextInstance result = contextInstanceContainer.getContextInstance( context.getType(), context.getId() );
if (result != null) {
return result;
}
try {
AbstractContextInstance contextInstance = (AbstractContextInstance) cls.newInstance();
contextInstance.setProcessInstance(processInstance);
contextInstance.setContextId(context.getId());
contextInstance.setContextInstanceContainer(contextInstanceContainer);
contextInstanceContainer.addContextInstance(context.getType(), contextInstance);
return contextInstance;
} catch (Exception e) {
e.printStackTrace();
throw new RuntimeException("Unable to instantiate context '"
+ this.cls.getName() + "': " + e.getMessage());
}
}
}