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; 025 026 import org.apache.camel.Expression; 027 import org.apache.camel.Predicate; 028 import org.apache.camel.Processor; 029 import org.apache.camel.model.language.ExpressionType; 030 import org.apache.camel.processor.FilterProcessor; 031 import org.apache.camel.spi.RouteContext; 032 033 /** 034 * A base class for nodes which contain an expression and a number of outputs 035 * 036 * @version $Revision: 41724 $ 037 */ 038 @XmlAccessorType(XmlAccessType.FIELD) 039 public class ExpressionNode extends ProcessorType<ProcessorType> { 040 @XmlElementRef 041 private ExpressionType expression; 042 @XmlElementRef 043 private List<ProcessorType<?>> outputs = new ArrayList<ProcessorType<?>>(); 044 045 public ExpressionNode() { 046 } 047 048 public ExpressionNode(ExpressionType expression) { 049 this.expression = expression; 050 } 051 052 public ExpressionNode(Expression expression) { 053 if (expression != null) { 054 setExpression(new ExpressionType(expression)); 055 } 056 } 057 058 public ExpressionNode(Predicate predicate) { 059 if (predicate != null) { 060 setExpression(new ExpressionType(predicate)); 061 } 062 } 063 064 public ExpressionType getExpression() { 065 return expression; 066 } 067 068 public void setExpression(ExpressionType expression) { 069 this.expression = expression; 070 } 071 072 public List<ProcessorType<?>> getOutputs() { 073 return outputs; 074 } 075 076 public void setOutputs(List<ProcessorType<?>> outputs) { 077 this.outputs = outputs; 078 } 079 080 @Override 081 public String getLabel() { 082 if (getExpression() == null) { 083 return ""; 084 } 085 return getExpression().getLabel(); 086 } 087 088 protected FilterProcessor createFilterProcessor(RouteContext routeContext) throws Exception { 089 Processor childProcessor = routeContext.createProcessor(this); 090 return new FilterProcessor(getExpression().createPredicate(routeContext), childProcessor); 091 } 092 093 @Override 094 protected void configureChild(ProcessorType output) { 095 super.configureChild(output); 096 if (isInheritErrorHandler()) { 097 output.setErrorHandlerBuilder(getErrorHandlerBuilder()); 098 } 099 } 100 }