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 javax.xml.bind.annotation.XmlAccessType;
020 import javax.xml.bind.annotation.XmlAccessorType;
021 import javax.xml.bind.annotation.XmlElementRef;
022 import javax.xml.bind.annotation.XmlRootElement;
023 import javax.xml.bind.annotation.XmlTransient;
024
025 import org.apache.camel.Expression;
026 import org.apache.camel.Predicate;
027 import org.apache.camel.model.language.ExpressionDefinition;
028 import org.apache.camel.spi.RouteContext;
029
030 /**
031 * Represents an expression sub element
032 */
033 @XmlRootElement(name = "expression")
034 @XmlAccessorType(XmlAccessType.FIELD)
035 public 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