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The Core Camel Java DSL based router
/**
* 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.model;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlTransient;
import org.apache.camel.AsyncProcessor;
import org.apache.camel.Processor;
import org.apache.camel.Service;
import org.apache.camel.processor.DelegateAsyncProcessor;
import org.apache.camel.processor.DelegateSyncProcessor;
import org.apache.camel.spi.Metadata;
import org.apache.camel.spi.RouteContext;
import org.apache.camel.util.ObjectHelper;
/**
* Calls a Camel processor.
*
* @version
*/
@Metadata(label = "eip,endpoint")
@XmlRootElement(name = "process")
@XmlAccessorType(XmlAccessType.FIELD)
public class ProcessDefinition extends NoOutputDefinition {
@XmlAttribute(required = true)
private String ref;
@XmlTransient
private Processor processor;
public ProcessDefinition() {
}
public ProcessDefinition(Processor processor) {
this.processor = processor;
}
@Override
public String toString() {
if (ref != null) {
return "process[ref:" + ref + "]";
} else {
// do not invoke toString on the processor as we do not know what it would do
String id = ObjectHelper.getIdentityHashCode(processor);
return "process[Processor@" + id + "]";
}
}
@Override
public String getLabel() {
if (ref != null) {
return "ref:" + ref;
} else if (processor != null) {
// do not invoke toString on the processor as we do not know what it would do
String id = ObjectHelper.getIdentityHashCode(processor);
return "Processor@" + id;
} else {
return "";
}
}
public String getRef() {
return ref;
}
/**
* Reference to the {@link Processor} to lookup in the registry to use.
*/
public void setRef(String ref) {
this.ref = ref;
}
@Override
public Processor createProcessor(RouteContext routeContext) {
Processor answer = processor;
if (processor == null) {
ObjectHelper.notNull(ref, "ref", this);
answer = routeContext.mandatoryLookup(getRef(), Processor.class);
}
// ensure its wrapped in a Service so we can manage it from eg. JMX
// (a Processor must be a Service to be enlisted in JMX)
if (!(answer instanceof Service)) {
if (answer instanceof AsyncProcessor) {
// the processor is async by nature so use the async delegate
answer = new DelegateAsyncProcessor(answer);
} else {
// the processor is sync by nature so use the sync delegate
answer = new DelegateSyncProcessor(answer);
}
}
return answer;
}
}