/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.ode.bpel.intercept;
import org.apache.ode.bpel.iapi.MyRoleMessageExchange;
import org.w3c.dom.Node;
import org.w3c.dom.Text;
import javax.xml.namespace.QName;
import java.util.Map;
/**
* An example of a simple interceptor providing a "throttling" capability - that is an
* ability to limit the number of instances created for a given process.
*
* @author Maciej Szefler
*/
public class InstanceCountThrottler extends NoOpInterceptor {
@Override
public void onNewInstanceInvoked(MyRoleMessageExchange mex,
InterceptorContext ic) throws FailMessageExchangeException {
if (ic.getProcessDAO().getNumInstances() >= ic.getBpelProcess().getInstanceMaximumCount())
throw new FailMessageExchangeException("Too many instances.");
}
}