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 */ 017package org.apache.camel.model; 018 019import javax.xml.bind.annotation.XmlAccessType; 020import javax.xml.bind.annotation.XmlAccessorType; 021import javax.xml.bind.annotation.XmlElementRef; 022import javax.xml.bind.annotation.XmlRootElement; 023import javax.xml.bind.annotation.XmlTransient; 024 025import org.apache.camel.Expression; 026import org.apache.camel.Predicate; 027import org.apache.camel.model.language.ExpressionDefinition; 028import org.apache.camel.spi.RouteContext; 029 030/** 031 * Represents an expression sub element 032 */ 033@XmlRootElement(name = "expression") // must be named expression 034@XmlAccessorType(XmlAccessType.FIELD) 035public class ExpressionSubElementDefinition { 036 @XmlElementRef 037 private ExpressionDefinition expressionType; 038 @XmlTransient 039 private Expression expression; 040 @XmlTransient 041 private Predicate predicate; 042 043 public ExpressionSubElementDefinition() { 044 } 045 046 public ExpressionSubElementDefinition(Expression expression) { 047 this.expression = expression; 048 } 049 050 public ExpressionSubElementDefinition(Predicate predicate) { 051 this.predicate = predicate; 052 } 053 054 public ExpressionDefinition getExpressionType() { 055 return expressionType; 056 } 057 058 public void setExpressionType(ExpressionDefinition expressionType) { 059 this.expressionType = expressionType; 060 } 061 062 public Expression getExpression() { 063 return expression; 064 } 065 066 public void setExpression(Expression expression) { 067 this.expression = expression; 068 } 069 070 public void setPredicate(Predicate predicate) { 071 this.predicate = predicate; 072 } 073 074 public Predicate getPredicate() { 075 return predicate; 076 } 077 078 public Expression createExpression(RouteContext routeContext) { 079 ExpressionDefinition expressionType = getExpressionType(); 080 if (expressionType != null && expression == null) { 081 expression = expressionType.createExpression(routeContext); 082 } 083 return expression; 084 } 085 086 public Predicate createPredicate(RouteContext routeContext) { 087 ExpressionDefinition expressionType = getExpressionType(); 088 if (expressionType != null && getPredicate() == null) { 089 setPredicate(expressionType.createPredicate(routeContext)); 090 } 091 return getPredicate(); 092 } 093 094 @Override 095 public String toString() { 096 if (expression != null) { 097 return expression.toString(); 098 } else if (expressionType != null) { 099 return expressionType.toString(); 100 } else if (predicate != null) { 101 return predicate.toString(); 102 } 103 return super.toString(); 104 } 105} 106