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.XmlAttribute;
022 import javax.xml.bind.annotation.XmlRootElement;
023
024 import org.apache.camel.Expression;
025 import org.apache.camel.Processor;
026 import org.apache.camel.builder.ExpressionClause;
027 import org.apache.camel.model.language.ExpressionDefinition;
028 import org.apache.camel.processor.Delayer;
029 import org.apache.camel.spi.RouteContext;
030 import org.apache.camel.util.ObjectHelper;
031
032 /**
033 * Represents an XML <delay/> element
034 *
035 * @version $Revision: 751373 $
036 */
037 @XmlRootElement(name = "delay")
038 @XmlAccessorType(XmlAccessType.FIELD)
039 public class DelayDefinition extends ExpressionNode {
040 @XmlAttribute
041 private Long delayTime = 0L;
042
043 public DelayDefinition() {
044 }
045
046 public DelayDefinition(Expression processAtExpression) {
047 super(processAtExpression);
048 }
049
050 public DelayDefinition(ExpressionDefinition processAtExpression) {
051 super(processAtExpression);
052 }
053
054 public DelayDefinition(Expression processAtExpression, long delayTime) {
055 super(processAtExpression);
056 this.delayTime = delayTime;
057 }
058
059 @Override
060 public String toString() {
061 return "Delay[on: " + getExpression() + " delay: " + delayTime + " -> " + getOutputs() + "]";
062 }
063
064 // Fluent API
065 // -------------------------------------------------------------------------
066
067 /**
068 * Sets the delay time in millis to delay
069 * @param delay delay time in millis
070 * @return the builder
071 */
072 public DelayDefinition delayTime(Long delay) {
073 setDelayTime(delay);
074 return this;
075 }
076
077 /**
078 * Set the expression that the delayer will use
079 * @return the builder
080 */
081 public ExpressionClause<DelayDefinition> expression() {
082 return ExpressionClause.createAndSetExpression(this);
083 }
084
085 @Override
086 public String getShortName() {
087 return "delay";
088 }
089
090 public Long getDelayTime() {
091 return delayTime;
092 }
093
094 public void setDelayTime(Long delayTime) {
095 this.delayTime = delayTime;
096 }
097
098
099 @Override
100 public Processor createProcessor(RouteContext routeContext) throws Exception {
101 Processor childProcessor = routeContext.createProcessor(this);
102 Expression processAtExpression = createAbsoluteTimeDelayExpression(routeContext);
103 return new Delayer(childProcessor, processAtExpression, delayTime);
104 }
105
106 private Expression createAbsoluteTimeDelayExpression(RouteContext routeContext) {
107 ExpressionDefinition expr = getExpression();
108 if (expr != null) {
109 if (ObjectHelper.isNotEmpty(expr.getExpression())
110 || expr.getExpressionValue() != null) {
111 return expr.createExpression(routeContext);
112 }
113 }
114 return null;
115 }
116 }