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.builder.ExpressionClause;
026 import org.apache.camel.model.language.ExpressionDefinition;
027 import org.apache.camel.processor.LoopProcessor;
028 import org.apache.camel.spi.RouteContext;
029
030 /**
031 * Represents an XML <loop/> element
032 *
033 * @version $Revision: 750806 $
034 */
035 @XmlRootElement(name = "loop")
036 @XmlAccessorType(XmlAccessType.FIELD)
037 public class LoopDefinition extends ExpressionNode implements Block {
038 public LoopDefinition() {
039 }
040
041 public LoopDefinition(Expression expression) {
042 super(expression);
043 }
044
045 public LoopDefinition(ExpressionDefinition expression) {
046 super(expression);
047 }
048
049 public void setExpression(Expression expr) {
050 if (expr != null) {
051 setExpression(new ExpressionDefinition(expr));
052 }
053 }
054
055
056 @Override
057 public String toString() {
058 return "Loop[" + getExpression() + " -> " + getOutputs() + "]";
059 }
060
061 @Override
062 public String getShortName() {
063 return "loop";
064 }
065
066 @Override
067 public Processor createProcessor(RouteContext routeContext) throws Exception {
068 return new LoopProcessor(
069 getExpression().createExpression(routeContext),
070 routeContext.createProcessor(this));
071 }
072
073 // Fluent API
074 //-------------------------------------------------------------------------
075 /**
076 * Set the expression that LoopType will use
077 * @return the builder
078 */
079 public ExpressionClause<LoopDefinition> expression() {
080 return ExpressionClause.createAndSetExpression(this);
081 }
082 }