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.XmlElement;
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.model.language.ExpressionType;
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 <delayer/> element
033     *
034     * @version $Revision: 1750 $
035     */
036    @XmlRootElement(name = "delayer")
037    @XmlAccessorType(XmlAccessType.FIELD)
038    public class DelayerType extends ExpressionNode {
039        @XmlElement
040        private Long delay = 0L;
041    
042        public DelayerType() {
043        }
044    
045        public DelayerType(Expression processAtExpression) {
046            super(processAtExpression);
047        }
048    
049        public DelayerType(ExpressionType processAtExpression) {
050            super(processAtExpression);
051        }
052    
053        public DelayerType(Expression processAtExpression, long delay) {
054            super(processAtExpression);
055            this.delay = delay;
056        }
057    
058        @Override
059        public String toString() {
060            return "Delayer[" + getExpression() + " -> " + getOutputs() + "]";
061        }
062    
063        @Override
064        public String getShortName() {
065            return "delayer";
066        }
067    
068        public Long getDelay() {
069            return delay;
070        }
071    
072        public void setDelay(Long delay) {
073            this.delay = delay;
074        }
075    
076        @Override
077        public Processor createProcessor(RouteContext routeContext) throws Exception {
078            Processor childProcessor = routeContext.createProcessor(this);
079            Expression processAtExpression = createAbsoluteTimeDelayExpression(routeContext);
080            return new Delayer(childProcessor, processAtExpression, delay);
081        }
082    
083        private Expression createAbsoluteTimeDelayExpression(RouteContext routeContext) {
084            ExpressionType expr = getExpression();
085            if (expr != null) {
086                if (ObjectHelper.isNotNullAndNonEmpty(expr.getExpression()) 
087                    || expr.getExpressionValue() != null) {
088                    return expr.createExpression(routeContext);
089                } 
090            } 
091            return null;
092        }
093    }