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.model; 018 019 import java.util.ArrayList; 020 import java.util.List; 021 022 import javax.xml.bind.annotation.XmlAccessType; 023 import javax.xml.bind.annotation.XmlAccessorType; 024 import javax.xml.bind.annotation.XmlElementRef; 025 import javax.xml.bind.annotation.XmlTransient; 026 027 import org.apache.camel.Expression; 028 import org.apache.camel.Predicate; 029 import org.apache.camel.Processor; 030 import org.apache.camel.impl.RouteContext; 031 import org.apache.camel.model.language.ExpressionType; 032 import org.apache.camel.processor.FilterProcessor; 033 034 /** 035 * A base class for nodes which contain an expression and a number of outputs 036 * 037 * @version $Revision: 35332 $ 038 */ 039 @XmlAccessorType(XmlAccessType.FIELD) 040 public class ExpressionNode extends ProcessorType<ProcessorType> { 041 @XmlElementRef 042 private ExpressionType expression; 043 @XmlElementRef 044 private List<ProcessorType<?>> outputs = new ArrayList<ProcessorType<?>>(); 045 046 public ExpressionNode() { 047 } 048 049 public ExpressionNode(ExpressionType expression) { 050 this.expression = expression; 051 } 052 053 public ExpressionNode(Expression expression) { 054 if (expression != null) { 055 setExpression(new ExpressionType(expression)); 056 } 057 } 058 059 public ExpressionNode(Predicate predicate) { 060 if (predicate != null) { 061 setExpression(new ExpressionType(predicate)); 062 } 063 } 064 065 public ExpressionType getExpression() { 066 return expression; 067 } 068 069 public void setExpression(ExpressionType expression) { 070 this.expression = expression; 071 } 072 073 public List<ProcessorType<?>> getOutputs() { 074 return outputs; 075 } 076 077 public void setOutputs(List<ProcessorType<?>> outputs) { 078 this.outputs = outputs; 079 } 080 081 @Override 082 public String getLabel() { 083 if (getExpression() == null) { 084 return ""; 085 } 086 return getExpression().getLabel(); 087 } 088 089 protected FilterProcessor createFilterProcessor(RouteContext routeContext) throws Exception { 090 Processor childProcessor = routeContext.createProcessor(this); 091 return new FilterProcessor(getExpression().createPredicate(routeContext), childProcessor); 092 } 093 094 @Override 095 protected void configureChild(ProcessorType output) { 096 super.configureChild(output); 097 if (isInheritErrorHandler()) { 098 output.setErrorHandlerBuilder(getErrorHandlerBuilder()); 099 } 100 } 101 }