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.ExpressionBuilder; 026 import org.apache.camel.model.language.ExpressionDefinition; 027 import org.apache.camel.processor.Delayer; 028 import org.apache.camel.spi.RouteContext; 029 import org.apache.camel.util.ObjectHelper; 030 031 /** 032 * Represents an XML <delay/> element 033 * 034 * @version $Revision: 781713 $ 035 */ 036 @XmlRootElement(name = "delay") 037 @XmlAccessorType(XmlAccessType.FIELD) 038 public class DelayDefinition extends ExpressionNode { 039 040 public DelayDefinition() { 041 } 042 043 public DelayDefinition(Expression delay) { 044 super(delay); 045 } 046 047 @Override 048 public String getLabel() { 049 return "delay"; 050 } 051 052 @Override 053 public String getShortName() { 054 return "delay"; 055 } 056 057 @Override 058 public String toString() { 059 return "Delay[" + getExpression() + " -> " + getOutputs() + "]"; 060 } 061 062 // Fluent API 063 // ------------------------------------------------------------------------- 064 065 /** 066 * Sets the delay time in millis to delay 067 * 068 * @param delay delay time in millis 069 * @return the builder 070 */ 071 public DelayDefinition delayTime(Long delay) { 072 setExpression(new ExpressionDefinition(ExpressionBuilder.constantExpression(delay))); 073 return this; 074 } 075 076 @Override 077 public Processor createProcessor(RouteContext routeContext) throws Exception { 078 Processor childProcessor = routeContext.createProcessor(this); 079 Expression delay = createAbsoluteTimeDelayExpression(routeContext); 080 return new Delayer(childProcessor, delay); 081 } 082 083 private Expression createAbsoluteTimeDelayExpression(RouteContext routeContext) { 084 ExpressionDefinition expr = getExpression(); 085 if (expr != null) { 086 if (ObjectHelper.isNotEmpty(expr.getExpression()) || expr.getExpressionValue() != null) { 087 return expr.createExpression(routeContext); 088 } 089 } 090 return null; 091 } 092 }