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.XmlRootElement;
020    
021    import org.apache.camel.Predicate;
022    import org.apache.camel.builder.ExpressionClause;
023    import org.apache.camel.model.language.ExpressionDefinition;
024    import org.apache.camel.processor.FilterProcessor;
025    import org.apache.camel.spi.RouteContext;
026    
027    /**
028     * Represents an XML <when/> element
029     * 
030     * @version $Revision: 750806 $
031     */
032    @XmlRootElement(name = "when")
033    public class WhenDefinition extends ExpressionNode {
034    
035        public WhenDefinition() {
036        }
037    
038        public WhenDefinition(Predicate predicate) {
039            super(predicate);
040        }
041    
042        public WhenDefinition(ExpressionDefinition expression) {
043            super(expression);
044        }
045    
046        @Override
047        public String toString() {
048            return "When[" + getExpression() + " -> " + getOutputs() + "]";
049        }
050    
051        @Override
052        public String getShortName() {
053            return "when";
054        }
055    
056        @Override
057        public FilterProcessor createProcessor(RouteContext routeContext) throws Exception {
058            return createFilterProcessor(routeContext);
059        }
060        
061        // Fluent API
062        //-------------------------------------------------------------------------
063        /**
064         * Set the expression that WhenType will use
065         * @return the builder
066         */
067        public ExpressionClause<WhenDefinition> expression() {
068            return ExpressionClause.createAndSetExpression(this);
069        }
070    }