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.bam; 018 019 import org.apache.camel.Endpoint; 020 import org.apache.camel.Expression; 021 import org.apache.camel.Processor; 022 import org.apache.camel.Route; 023 import org.apache.camel.bam.model.ActivityState; 024 import org.apache.camel.bam.model.ProcessInstance; 025 import org.apache.camel.bam.rules.ActivityRules; 026 import org.apache.camel.builder.ProcessorFactory; 027 import org.apache.camel.impl.EventDrivenConsumerRoute; 028 029 import java.util.Date; 030 031 /** 032 * @version $Revision: $ 033 */ 034 public class ActivityBuilder implements ProcessorFactory { 035 private ProcessBuilder processBuilder; 036 private Endpoint endpoint; 037 private ActivityRules activityRules; 038 private Expression correlationExpression; 039 040 public ActivityBuilder(ProcessBuilder processBuilder, Endpoint endpoint) { 041 this.processBuilder = processBuilder; 042 this.endpoint = endpoint; 043 this.activityRules = new ActivityRules(processBuilder); 044 this.activityRules.setActivityName(endpoint.getEndpointUri()); 045 } 046 047 public Endpoint getEndpoint() { 048 return endpoint; 049 } 050 051 public Processor createProcessor() throws Exception { 052 return processBuilder.createActivityProcessor(this); 053 } 054 055 public Route createRoute() throws Exception { 056 Processor processor = createProcessor(); 057 if (processor == null) { 058 throw new IllegalArgumentException("No processor created for ActivityBuilder: " + this); 059 } 060 return new EventDrivenConsumerRoute(getEndpoint(), processor); 061 } 062 063 // Builder methods 064 //----------------------------------------------------------------------- 065 public ActivityBuilder correlate(Expression correlationExpression) { 066 this.correlationExpression = correlationExpression; 067 return this; 068 } 069 070 public ActivityBuilder name(String name) { 071 activityRules.setActivityName(name); 072 return this; 073 } 074 075 /** 076 * Create a temporal rule for when this step starts 077 */ 078 public TimeExpression starts() { 079 return new TimeExpression(this, ActivityLifecycle.Started) { 080 public Date evaluate(ProcessInstance instance, ActivityState state) { 081 return state.getTimeStarted(); 082 } 083 }; 084 } 085 086 /** 087 * Create a temporal rule for when this step completes 088 */ 089 public TimeExpression completes() { 090 return new TimeExpression(this, ActivityLifecycle.Completed) { 091 public Date evaluate(ProcessInstance instance, ActivityState state) { 092 return state.getTimeCompleted(); 093 } 094 }; 095 } 096 097 // Properties 098 //----------------------------------------------------------------------- 099 public Expression getCorrelationExpression() { 100 return correlationExpression; 101 } 102 103 public ActivityRules getActivityRules() { 104 return activityRules; 105 } 106 107 public ProcessBuilder getProcessBuilder() { 108 return processBuilder; 109 } 110 }