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.Expression;
024    import org.apache.camel.Processor;
025    import org.apache.camel.model.language.ExpressionType;
026    import org.apache.camel.processor.LoopProcessor;
027    import org.apache.camel.spi.RouteContext;
028    
029    /**
030     * Represents an XML <loop/> element
031     *
032     * @version $Revision: 1456 $
033     */
034    @XmlRootElement(name = "loop")
035    @XmlAccessorType(XmlAccessType.FIELD)
036    public class LoopType extends ExpressionNode implements Block {
037        public LoopType() {
038        }
039    
040        public LoopType(Expression expression) {
041            super(expression);
042        }
043    
044        public LoopType(ExpressionType expression) {
045            super(expression);
046        }
047    
048        public void setExpression(Expression<?> expr) {
049            if (expr != null) {
050                setExpression(new ExpressionType(expr));
051            }
052        }
053        @Override
054        public String toString() {
055            return "Loop[" + getExpression() + " -> " + getOutputs() + "]";
056        }
057        
058        @Override
059        public String getShortName() {
060            return "loop";
061        }
062    
063        @Override
064        public Processor createProcessor(RouteContext routeContext) throws Exception {
065            return new LoopProcessor(
066                getExpression().createExpression(routeContext),
067                routeContext.createProcessor(this));
068        }
069    }