Source Code Cross Referenced for RuleFlowProcessInstanceImpl.java in  » Rule-Engine » drolls-Rule-Engine » org » drools » ruleflow » instance » impl » Java Source Code / Java DocumentationJava Source Code and Java Documentation

Java Source Code / Java Documentation
1. 6.0 JDK Core
2. 6.0 JDK Modules
3. 6.0 JDK Modules com.sun
4. 6.0 JDK Modules com.sun.java
5. 6.0 JDK Modules sun
6. 6.0 JDK Platform
7. Ajax
8. Apache Harmony Java SE
9. Aspect oriented
10. Authentication Authorization
11. Blogger System
12. Build
13. Byte Code
14. Cache
15. Chart
16. Chat
17. Code Analyzer
18. Collaboration
19. Content Management System
20. Database Client
21. Database DBMS
22. Database JDBC Connection Pool
23. Database ORM
24. Development
25. EJB Server geronimo
26. EJB Server GlassFish
27. EJB Server JBoss 4.2.1
28. EJB Server resin 3.1.5
29. ERP CRM Financial
30. ESB
31. Forum
32. GIS
33. Graphic Library
34. Groupware
35. HTML Parser
36. IDE
37. IDE Eclipse
38. IDE Netbeans
39. Installer
40. Internationalization Localization
41. Inversion of Control
42. Issue Tracking
43. J2EE
44. JBoss
45. JMS
46. JMX
47. Library
48. Mail Clients
49. Net
50. Parser
51. PDF
52. Portal
53. Profiler
54. Project Management
55. Report
56. RSS RDF
57. Rule Engine
58. Science
59. Scripting
60. Search Engine
61. Security
62. Sevlet Container
63. Source Control
64. Swing Library
65. Template Engine
66. Test Coverage
67. Testing
68. UML
69. Web Crawler
70. Web Framework
71. Web Mail
72. Web Server
73. Web Services
74. Web Services apache cxf 2.0.1
75. Web Services AXIS2
76. Wiki Engine
77. Workflow Engines
78. XML
79. XML UI
Java
Java Tutorial
Java Open Source
Jar File Download
Java Articles
Java Products
Java by API
Photoshop Tutorials
Maya Tutorials
Flash Tutorials
3ds-Max Tutorials
Illustrator Tutorials
GIMP Tutorials
C# / C Sharp
C# / CSharp Tutorial
C# / CSharp Open Source
ASP.Net
ASP.NET Tutorial
JavaScript DHTML
JavaScript Tutorial
JavaScript Reference
HTML / CSS
HTML CSS Reference
C / ANSI-C
C Tutorial
C++
C++ Tutorial
Ruby
PHP
Python
Python Tutorial
Python Open Source
SQL Server / T-SQL
SQL Server / T-SQL Tutorial
Oracle PL / SQL
Oracle PL/SQL Tutorial
PostgreSQL
SQL / MySQL
MySQL Tutorial
VB.Net
VB.Net Tutorial
Flash / Flex / ActionScript
VBA / Excel / Access / Word
XML
XML Tutorial
Microsoft Office PowerPoint 2007 Tutorial
Microsoft Office Excel 2007 Tutorial
Microsoft Office Word 2007 Tutorial
Java Source Code / Java Documentation » Rule Engine » drolls Rule Engine » org.drools.ruleflow.instance.impl 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        package org.drools.ruleflow.instance.impl;
002:
003:        /*
004:         * Copyright 2005 JBoss Inc
005:         * 
006:         * Licensed under the Apache License, Version 2.0 (the "License");
007:         * you may not use this file except in compliance with the License.
008:         * You may obtain a copy of the License at
009:         * 
010:         *      http://www.apache.org/licenses/LICENSE-2.0
011:         * 
012:         * Unless required by applicable law or agreed to in writing, software
013:         * distributed under the License is distributed on an "AS IS" BASIS,
014:         * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015:         * See the License for the specific language governing permissions and
016:         * limitations under the License.
017:         */
018:
019:        import java.util.ArrayList;
020:        import java.util.Collection;
021:        import java.util.Collections;
022:        import java.util.Iterator;
023:        import java.util.List;
024:
025:        import org.drools.Agenda;
026:        import org.drools.WorkingMemory;
027:        import org.drools.common.EventSupport;
028:        import org.drools.common.InternalWorkingMemory;
029:        import org.drools.event.ActivationCancelledEvent;
030:        import org.drools.event.ActivationCreatedEvent;
031:        import org.drools.event.AfterActivationFiredEvent;
032:        import org.drools.event.AgendaEventListener;
033:        import org.drools.event.AgendaGroupPoppedEvent;
034:        import org.drools.event.AgendaGroupPushedEvent;
035:        import org.drools.event.BeforeActivationFiredEvent;
036:        import org.drools.event.RuleFlowCompletedEvent;
037:        import org.drools.event.RuleFlowEventListener;
038:        import org.drools.event.RuleFlowGroupActivatedEvent;
039:        import org.drools.event.RuleFlowGroupDeactivatedEvent;
040:        import org.drools.event.RuleFlowStartedEvent;
041:        import org.drools.ruleflow.common.instance.impl.ProcessInstanceImpl;
042:        import org.drools.ruleflow.core.ActionNode;
043:        import org.drools.ruleflow.core.EndNode;
044:        import org.drools.ruleflow.core.Join;
045:        import org.drools.ruleflow.core.MilestoneNode;
046:        import org.drools.ruleflow.core.Node;
047:        import org.drools.ruleflow.core.RuleFlowProcess;
048:        import org.drools.ruleflow.core.RuleSetNode;
049:        import org.drools.ruleflow.core.Split;
050:        import org.drools.ruleflow.core.StartNode;
051:        import org.drools.ruleflow.core.SubFlowNode;
052:        import org.drools.ruleflow.instance.RuleFlowNodeInstance;
053:        import org.drools.ruleflow.instance.RuleFlowProcessInstance;
054:
055:        /**
056:         * Default implementation of a RuleFlow process instance.
057:         * 
058:         * @author <a href="mailto:kris_verlaenen@hotmail.com">Kris Verlaenen</a>
059:         */
060:        public class RuleFlowProcessInstanceImpl extends ProcessInstanceImpl
061:                implements  RuleFlowProcessInstance, AgendaEventListener,
062:                RuleFlowEventListener {
063:
064:            private static final long serialVersionUID = 400L;
065:
066:            private InternalWorkingMemory workingMemory;
067:            private final List nodeInstances = new ArrayList();
068:
069:            public RuleFlowProcess getRuleFlowProcess() {
070:                return (RuleFlowProcess) getProcess();
071:            }
072:
073:            public void addNodeInstance(final RuleFlowNodeInstance nodeInstance) {
074:                this .nodeInstances.add(nodeInstance);
075:                nodeInstance.setProcessInstance(this );
076:            }
077:
078:            public void removeNodeInstance(
079:                    final RuleFlowNodeInstance nodeInstance) {
080:                this .nodeInstances.remove(nodeInstance);
081:            }
082:
083:            public Collection getNodeInstances() {
084:                return Collections.unmodifiableCollection(new ArrayList(
085:                        this .nodeInstances));
086:            }
087:
088:            public RuleFlowNodeInstance getFirstNodeInstance(final long nodeId) {
089:                for (final Iterator iterator = this .nodeInstances.iterator(); iterator
090:                        .hasNext();) {
091:                    final RuleFlowNodeInstance nodeInstance = (RuleFlowNodeInstance) iterator
092:                            .next();
093:                    if (nodeInstance.getNodeId() == nodeId) {
094:                        return nodeInstance;
095:                    }
096:                }
097:                return null;
098:            }
099:
100:            public Agenda getAgenda() {
101:                if (this .workingMemory == null) {
102:                    return null;
103:                }
104:                return this .workingMemory.getAgenda();
105:            }
106:
107:            public void setWorkingMemory(
108:                    final InternalWorkingMemory workingMemory) {
109:                if (this .workingMemory != null) {
110:                    throw new IllegalArgumentException(
111:                            "A working memory can only be set once.");
112:                }
113:                this .workingMemory = workingMemory;
114:                workingMemory.addEventListener((AgendaEventListener) this );
115:                workingMemory.addEventListener((RuleFlowEventListener) this );
116:            }
117:
118:            public WorkingMemory getWorkingMemory() {
119:                return this .workingMemory;
120:            }
121:
122:            public RuleFlowNodeInstance getNodeInstance(final Node node) {
123:                if (node instanceof  RuleSetNode) {
124:                    final RuleFlowNodeInstance result = (RuleFlowNodeInstance) getAgenda()
125:                            .getRuleFlowGroup(
126:                                    ((RuleSetNode) node).getRuleFlowGroup());
127:                    result.setNodeId(node.getId());
128:                    addNodeInstance(result);
129:                    return result;
130:                } else if (node instanceof  Split) {
131:                    RuleFlowNodeInstance result = getFirstNodeInstance(node
132:                            .getId());
133:                    if (result == null) {
134:                        result = new RuleFlowSplitInstanceImpl();
135:                        result.setNodeId(node.getId());
136:                        addNodeInstance(result);
137:                    }
138:                    return result;
139:                } else if (node instanceof  Join) {
140:                    RuleFlowNodeInstance result = getFirstNodeInstance(node
141:                            .getId());
142:                    if (result == null) {
143:                        result = new RuleFlowJoinInstanceImpl();
144:                        result.setNodeId(node.getId());
145:                        addNodeInstance(result);
146:                    }
147:                    return result;
148:                } else if (node instanceof  StartNode) {
149:                    final RuleFlowNodeInstance result = new StartNodeInstanceImpl();
150:                    result.setNodeId(node.getId());
151:                    addNodeInstance(result);
152:                    return result;
153:                } else if (node instanceof  EndNode) {
154:                    final RuleFlowNodeInstance result = new EndNodeInstanceImpl();
155:                    result.setNodeId(node.getId());
156:                    addNodeInstance(result);
157:                    return result;
158:                } else if (node instanceof  MilestoneNode) {
159:                    final RuleFlowNodeInstance result = new MilestoneNodeInstanceImpl();
160:                    result.setNodeId(node.getId());
161:                    addNodeInstance(result);
162:                    return result;
163:                } else if (node instanceof  SubFlowNode) {
164:                    final RuleFlowNodeInstance result = new SubFlowNodeInstanceImpl();
165:                    result.setNodeId(node.getId());
166:                    addNodeInstance(result);
167:                    return result;
168:                } else if (node instanceof  ActionNode) {
169:                    final RuleFlowNodeInstance result = new ActionNodeInstanceImpl();
170:                    result.setNodeId(node.getId());
171:                    addNodeInstance(result);
172:                    return result;
173:                }
174:                throw new IllegalArgumentException("Illegal node type: "
175:                        + node.getClass());
176:            }
177:
178:            public void start() {
179:                if (getState() != ProcessInstanceImpl.STATE_PENDING) {
180:                    throw new IllegalArgumentException(
181:                            "A process instance can only be started once");
182:                }
183:                setState(ProcessInstanceImpl.STATE_ACTIVE);
184:                getNodeInstance(getRuleFlowProcess().getStart()).trigger(null);
185:            }
186:
187:            public void setState(final int state) {
188:                super .setState(state);
189:                if (state == ProcessInstanceImpl.STATE_COMPLETED) {
190:                    // deactivate all node instances of this process instance
191:                    while (!nodeInstances.isEmpty()) {
192:                        RuleFlowNodeInstance nodeInstance = (RuleFlowNodeInstance) nodeInstances
193:                                .get(0);
194:                        nodeInstance.cancel();
195:                    }
196:                    workingMemory
197:                            .removeEventListener((AgendaEventListener) this );
198:                    workingMemory
199:                            .removeEventListener((RuleFlowEventListener) this );
200:                    ((EventSupport) this .workingMemory)
201:                            .getRuleFlowEventSupport()
202:                            .fireRuleFlowProcessCompleted(this ,
203:                                    this .workingMemory);
204:                }
205:            }
206:
207:            public String toString() {
208:                final StringBuffer sb = new StringBuffer(
209:                        "RuleFlowProcessInstance");
210:                sb.append(getId());
211:                sb.append(" [processId=");
212:                sb.append(getProcess().getId());
213:                sb.append(",state=");
214:                sb.append(getState());
215:                sb.append("]");
216:                return sb.toString();
217:            }
218:
219:            public void activationCreated(ActivationCreatedEvent event,
220:                    WorkingMemory workingMemory) {
221:                // TODO group all milestone related code in milestone instance impl?
222:                // check whether this activation is from the DROOLS_SYSTEM agenda group
223:                String ruleFlowGroup = event.getActivation().getRule()
224:                        .getRuleFlowGroup();
225:                if ("DROOLS_SYSTEM".equals(ruleFlowGroup)) {
226:                    // new activations of the rule associate with a milestone node
227:                    // trigger node instances of that milestone node
228:                    String ruleName = event.getActivation().getRule().getName();
229:                    for (Iterator iterator = getNodeInstances().iterator(); iterator
230:                            .hasNext();) {
231:                        RuleFlowNodeInstance nodeInstance = (RuleFlowNodeInstance) iterator
232:                                .next();
233:                        if (nodeInstance instanceof  MilestoneNodeInstanceImpl) {
234:                            String milestoneName = "RuleFlow-"
235:                                    + getProcess().getId() + "-"
236:                                    + nodeInstance.getNodeId();
237:                            if (milestoneName.equals(ruleName)) {
238:                                ((MilestoneNodeInstanceImpl) nodeInstance)
239:                                        .triggerCompleted();
240:                            }
241:                        }
242:
243:                    }
244:                }
245:            }
246:
247:            public void activationCancelled(ActivationCancelledEvent event,
248:                    WorkingMemory workingMemory) {
249:                // Do nothing
250:            }
251:
252:            public void afterActivationFired(AfterActivationFiredEvent event,
253:                    WorkingMemory workingMemory) {
254:                // Do nothing
255:            }
256:
257:            public void agendaGroupPopped(AgendaGroupPoppedEvent event,
258:                    WorkingMemory workingMemory) {
259:                // Do nothing
260:            }
261:
262:            public void agendaGroupPushed(AgendaGroupPushedEvent event,
263:                    WorkingMemory workingMemory) {
264:                // Do nothing
265:            }
266:
267:            public void beforeActivationFired(BeforeActivationFiredEvent event,
268:                    WorkingMemory workingMemory) {
269:                // Do nothing
270:            }
271:
272:            public void ruleFlowGroupActivated(
273:                    RuleFlowGroupActivatedEvent event,
274:                    WorkingMemory workingMemory) {
275:                // Do nothing
276:            }
277:
278:            public void ruleFlowGroupDeactivated(
279:                    RuleFlowGroupDeactivatedEvent event,
280:                    WorkingMemory workingMemory) {
281:                // Do nothing
282:            }
283:
284:            public void ruleFlowStarted(RuleFlowStartedEvent event,
285:                    WorkingMemory workingMemory) {
286:                // Do nothing
287:            }
288:
289:            public void ruleFlowCompleted(RuleFlowCompletedEvent event,
290:                    WorkingMemory workingMemory) {
291:                // TODO group all subflow related code in subflow instance impl?
292:                for (Iterator iterator = getNodeInstances().iterator(); iterator
293:                        .hasNext();) {
294:                    RuleFlowNodeInstance nodeInstance = (RuleFlowNodeInstance) iterator
295:                            .next();
296:                    if (nodeInstance instanceof  SubFlowNodeInstanceImpl) {
297:                        SubFlowNodeInstanceImpl subFlowInstance = (SubFlowNodeInstanceImpl) nodeInstance;
298:                        if (event.getRuleFlowProcessInstance().getId() == subFlowInstance
299:                                .getProcessInstanceId()) {
300:                            subFlowInstance.triggerCompleted();
301:                        }
302:                    }
303:
304:                }
305:            }
306:        }
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.