001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.camel.impl;
018
019 import org.apache.camel.Exchange;
020 import org.apache.camel.Expression;
021 import org.apache.camel.Processor;
022 import org.apache.camel.RouteNode;
023 import org.apache.camel.model.ProcessorDefinition;
024 import org.apache.camel.processor.Traceable;
025
026 /**
027 * A default implementation of the {@link org.apache.camel.RouteNode}
028 *
029 * @version $Revision: 788766 $
030 */
031 public class DefaultRouteNode implements RouteNode {
032
033 private Expression expression;
034 private Processor processor;
035 private ProcessorDefinition processorDefinition;
036
037 public DefaultRouteNode(ProcessorDefinition processorDefinition, Processor processor) {
038 this.processor = processor;
039 this.processorDefinition = processorDefinition;
040 }
041
042 public DefaultRouteNode(ProcessorDefinition processorDefinition, Expression expression) {
043 this.processorDefinition = processorDefinition;
044 this.expression = expression;
045 }
046
047 public Processor getProcessor() {
048 return processor;
049 }
050
051 public ProcessorDefinition getProcessorDefinition() {
052 return processorDefinition;
053 }
054
055 public String getLabel(Exchange exchange) {
056 if (expression != null) {
057 return expression.evaluate(exchange, String.class);
058 }
059
060 if (processor != null) {
061 if (processor instanceof Traceable) {
062 Traceable trace = (Traceable) processor;
063 return trace.getTraceLabel();
064 }
065 processor.toString();
066 }
067
068 // default then to definition
069 return processorDefinition.getLabel();
070 }
071
072 public boolean isAbstract() {
073 return processor == null;
074 }
075
076 @Override
077 public String toString() {
078 return "RouteNode[" + processorDefinition + "]";
079 }
080
081 }