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.XmlElement;
025    import javax.xml.bind.annotation.XmlElementRef;
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: $
038     */
039    @XmlAccessorType(XmlAccessType.FIELD)
040    public class ExpressionNode extends ProcessorType {
041        @XmlElementRef
042        private List<InterceptorType> interceptors = new ArrayList<InterceptorType>();
043        @XmlElementRef
044        private ExpressionType expression;
045        @XmlElementRef
046        private List<ProcessorType> outputs = new ArrayList<ProcessorType>();
047    
048        public ExpressionNode() {
049        }
050    
051        public ExpressionNode(ExpressionType expression) {
052            this.expression = expression;
053        }
054    
055        public ExpressionNode(Expression expression) {
056            setExpression(new ExpressionType(expression));
057        }
058    
059        public ExpressionNode(Predicate predicate) {
060            setExpression(new ExpressionType(predicate));
061        }
062    
063        public List<InterceptorType> getInterceptors() {
064            return interceptors;
065        }
066    
067        public void setInterceptors(List<InterceptorType> interceptors) {
068            this.interceptors = interceptors;
069        }
070    
071        public ExpressionType getExpression() {
072            return expression;
073        }
074    
075        public void setExpression(ExpressionType expression) {
076            this.expression = expression;
077        }
078    
079        public List<ProcessorType> getOutputs() {
080            return outputs;
081        }
082    
083        public void setOutputs(List<ProcessorType> outputs) {
084            this.outputs = outputs;
085        }
086    
087        protected FilterProcessor createFilterProcessor(RouteContext routeContext) throws Exception {
088            Processor childProcessor = routeContext.createProcessor(this);
089            return new FilterProcessor(getExpression().createPredicate(routeContext), childProcessor);
090        }
091    
092        @Override
093        protected void configureChild(ProcessorType output) {
094            if (isInheritErrorHandler()) {
095                output.setErrorHandlerBuilder(getErrorHandlerBuilder());
096            }
097        }
098    }