/**
* 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.camel.processor;
import org.apache.camel.Exchange;
import org.apache.camel.Expression;
import org.apache.camel.Message;
import org.apache.camel.Processor;
import org.apache.camel.Traceable;
import org.apache.camel.impl.DefaultMessage;
import org.apache.camel.support.ServiceSupport;
/**
* A processor which sets the body on the IN message with an {@link Expression}
*/
public class SetBodyProcessor extends ServiceSupport implements Processor, Traceable {
private final Expression expression;
public SetBodyProcessor(Expression expression) {
this.expression = expression;
}
public void process(Exchange exchange) throws Exception {
Object newBody = expression.evaluate(exchange, Object.class);
Message old = exchange.getIn();
// create a new message container so we do not drag specialized message objects along
Message msg = new DefaultMessage();
msg.copyFrom(old);
msg.setBody(newBody);
exchange.setIn(msg);
}
@Override
public String toString() {
return "SetBody(" + expression + ")";
}
public String getTraceLabel() {
return "setBody[" + expression + "]";
}
@Override
protected void doStart() throws Exception {
// noop
}
@Override
protected void doStop() throws Exception {
// noop
}
}