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 }