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.XmlRootElement;
022    
023    import org.apache.camel.Predicate;
024    import org.apache.camel.Processor;
025    import org.apache.camel.model.language.ExpressionDefinition;
026    import org.apache.camel.processor.FilterProcessor;
027    import org.apache.camel.spi.RouteContext;
028    
029    /**
030     * Represents an XML <filter/> element
031     *
032     * @version 
033     */
034    @XmlRootElement(name = "filter")
035    @XmlAccessorType(XmlAccessType.FIELD)
036    public class FilterDefinition extends ExpressionNode {
037    
038        public FilterDefinition() {
039        }
040    
041        public FilterDefinition(ExpressionDefinition expression) {
042            super(expression);
043        }
044    
045        public FilterDefinition(Predicate predicate) {
046            super(predicate);
047        }
048    
049        @Override
050        public String toString() {
051            return "Filter[" + getExpression() + " -> " + getOutputs() + "]";
052        }
053        
054        @Override
055        public String getLabel() {
056            return "filter[" + getExpression() + "]";
057        }
058        
059        @Override
060        public String getShortName() {
061            return "filter";
062        }
063    
064        @Override
065        public FilterProcessor createProcessor(RouteContext routeContext) throws Exception {
066            return createFilterProcessor(routeContext);
067        }
068        
069        @Override
070        protected FilterProcessor createFilterProcessor(RouteContext routeContext) throws Exception {
071            // filter EIP should have child outputs
072            Processor childProcessor = this.createChildProcessor(routeContext, true);
073            return new FilterProcessor(createPredicate(routeContext), childProcessor);
074        }
075    
076    }