/**
* 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.impl;
import org.apache.camel.DelegateProcessor;
import org.apache.camel.Exchange;
import org.apache.camel.Expression;
import org.apache.camel.Processor;
import org.apache.camel.RouteNode;
import org.apache.camel.Traceable;
import org.apache.camel.model.ProcessorDefinition;
/**
* A default implementation of the {@link org.apache.camel.RouteNode}
*
* @version
*/
public class DefaultRouteNode implements RouteNode {
private Expression expression;
private Processor processor;
private ProcessorDefinition<?> processorDefinition;
public DefaultRouteNode(ProcessorDefinition<?> processorDefinition, Processor processor) {
this.processor = processor;
this.processorDefinition = processorDefinition;
}
public DefaultRouteNode(ProcessorDefinition<?> processorDefinition, Expression expression) {
this.processorDefinition = processorDefinition;
this.expression = expression;
}
public Processor getProcessor() {
return processor;
}
public ProcessorDefinition<?> getProcessorDefinition() {
return processorDefinition;
}
public String getLabel(Exchange exchange) {
if (expression != null) {
return expression.evaluate(exchange, String.class);
}
String label = getTraceLabel(processor);
if (label == null) {
// no label then default to use the definition label
label = processorDefinition.getLabel();
}
return label;
}
@SuppressWarnings("deprecation")
private String getTraceLabel(Processor target) {
if (target == null) {
return null;
}
if (target instanceof Traceable) {
Traceable trace = (Traceable) target;
return trace.getTraceLabel();
} else if (target instanceof org.apache.camel.processor.Traceable) {
// to be backwards compatible
org.apache.camel.processor.Traceable trace = (org.apache.camel.processor.Traceable) target;
return trace.getTraceLabel();
}
// if we are a delegate then drill down
if (target instanceof DelegateProcessor) {
return getTraceLabel(((DelegateProcessor) target).getProcessor());
}
return null;
}
public boolean isAbstract() {
return processor == null;
}
@Override
public String toString() {
return "RouteNode[" + processorDefinition + "]";
}
}