Source Code Cross Referenced for RuleFlowGroupTest.java in  » Rule-Engine » drolls-Rule-Engine » org » drools » reteoo » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Rule Engine » drolls Rule Engine » org.drools.reteoo 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        package org.drools.reteoo;
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.List;
021:
022:        import org.drools.DroolsTestCase;
023:        import org.drools.RuleBase;
024:        import org.drools.RuleBaseFactory;
025:        import org.drools.WorkingMemory;
026:        import org.drools.base.SalienceInteger;
027:        import org.drools.common.DefaultFactHandle;
028:        import org.drools.common.InternalAgenda;
029:        import org.drools.common.PropagationContextImpl;
030:        import org.drools.common.RuleFlowGroupImpl;
031:        import org.drools.rule.Rule;
032:        import org.drools.ruleflow.common.instance.ProcessInstance;
033:        import org.drools.ruleflow.core.Connection;
034:        import org.drools.ruleflow.core.Constraint;
035:        import org.drools.ruleflow.core.EndNode;
036:        import org.drools.ruleflow.core.Join;
037:        import org.drools.ruleflow.core.RuleFlowProcess;
038:        import org.drools.ruleflow.core.RuleSetNode;
039:        import org.drools.ruleflow.core.Split;
040:        import org.drools.ruleflow.core.StartNode;
041:        import org.drools.ruleflow.core.impl.ConnectionImpl;
042:        import org.drools.ruleflow.core.impl.EndNodeImpl;
043:        import org.drools.ruleflow.core.impl.JoinImpl;
044:        import org.drools.ruleflow.core.impl.RuleFlowProcessImpl;
045:        import org.drools.ruleflow.core.impl.RuleSetNodeImpl;
046:        import org.drools.ruleflow.core.impl.SplitImpl;
047:        import org.drools.ruleflow.core.impl.StartNodeImpl;
048:        import org.drools.ruleflow.instance.RuleFlowProcessInstance;
049:        import org.drools.ruleflow.instance.impl.RuleFlowProcessInstanceImpl;
050:        import org.drools.spi.Consequence;
051:        import org.drools.spi.KnowledgeHelper;
052:        import org.drools.spi.PropagationContext;
053:
054:        /**
055:         * @author mproctor
056:         */
057:
058:        public class RuleFlowGroupTest extends DroolsTestCase {
059:
060:            public void testRuleFlowGroup() {
061:                final RuleBase ruleBase = RuleBaseFactory.newRuleBase();
062:
063:                final ReteooWorkingMemory workingMemory = (ReteooWorkingMemory) ruleBase
064:                        .newStatefulSession();
065:
066:                final InternalAgenda agenda = (InternalAgenda) workingMemory
067:                        .getAgenda();
068:
069:                final List list = new ArrayList();
070:
071:                // create the consequence
072:                final Consequence consequence = new Consequence() {
073:                    /**
074:                     * 
075:                     */
076:                    private static final long serialVersionUID = 400L;
077:
078:                    public void evaluate(KnowledgeHelper knowledgeHelper,
079:                            WorkingMemory workingMemory) {
080:                        list.add(knowledgeHelper.getRule());
081:                    }
082:                };
083:
084:                // create a rule for each rule flow groups
085:                final Rule rule0 = new Rule("test-rule0");
086:                rule0.setRuleFlowGroup("rule-flow-group-0");
087:                rule0.setConsequence(consequence);
088:
089:                final RuleTerminalNode node0 = new RuleTerminalNode(3,
090:                        new MockTupleSource(2), rule0, rule0.getLhs());
091:
092:                final Rule rule1 = new Rule("test-rule1");
093:                rule1.setRuleFlowGroup("rule-flow-group-1");
094:                rule1.setConsequence(consequence);
095:
096:                final RuleTerminalNode node1 = new RuleTerminalNode(4,
097:                        new MockTupleSource(2), rule1, rule1.getLhs());
098:
099:                final Rule rule2 = new Rule("test-rule2");
100:                rule2.setRuleFlowGroup("rule-flow-group-2");
101:                rule2.setConsequence(consequence);
102:                rule2.setSalience(new SalienceInteger(10));
103:
104:                final RuleTerminalNode node2 = new RuleTerminalNode(5,
105:                        new MockTupleSource(2), rule2, rule2.getLhs());
106:
107:                final Rule rule3 = new Rule("test-rule3");
108:                rule3.setRuleFlowGroup("rule-flow-group-3");
109:                rule3.setConsequence(consequence);
110:
111:                final RuleTerminalNode node3 = new RuleTerminalNode(6,
112:                        new MockTupleSource(2), rule3, rule3.getLhs());
113:
114:                final PropagationContext context0 = new PropagationContextImpl(
115:                        0, PropagationContext.ASSERTION, rule0, null);
116:
117:                // nodes
118:                final StartNode start = new StartNodeImpl();
119:                final RuleSetNode ruleSet0 = new RuleSetNodeImpl();
120:                ruleSet0.setRuleFlowGroup("rule-flow-group-0");
121:                final RuleSetNode ruleSet1 = new RuleSetNodeImpl();
122:                ruleSet1.setRuleFlowGroup("rule-flow-group-1");
123:                final RuleSetNode ruleSet2 = new RuleSetNodeImpl();
124:                ruleSet2.setRuleFlowGroup("rule-flow-group-2");
125:                final RuleSetNode ruleSet3 = new RuleSetNodeImpl();
126:                ruleSet3.setRuleFlowGroup("rule-flow-group-3");
127:                final Split split = new SplitImpl();
128:                split.setType(Split.TYPE_AND);
129:                final Join join = new JoinImpl();
130:                join.setType(Join.TYPE_AND);
131:                final EndNode end = new EndNodeImpl();
132:                // connections
133:                new ConnectionImpl(start, ruleSet0, Connection.TYPE_NORMAL);
134:                new ConnectionImpl(ruleSet0, split, Connection.TYPE_NORMAL);
135:                new ConnectionImpl(split, ruleSet1, Connection.TYPE_NORMAL);
136:                new ConnectionImpl(split, ruleSet2, Connection.TYPE_NORMAL);
137:                new ConnectionImpl(ruleSet1, join, Connection.TYPE_NORMAL);
138:                new ConnectionImpl(ruleSet2, join, Connection.TYPE_NORMAL);
139:                new ConnectionImpl(join, ruleSet3, Connection.TYPE_NORMAL);
140:                new ConnectionImpl(ruleSet3, end, Connection.TYPE_NORMAL);
141:
142:                // process
143:                final RuleFlowProcess process = new RuleFlowProcessImpl();
144:                process.addNode(start);
145:                process.addNode(ruleSet0);
146:                process.addNode(ruleSet1);
147:                process.addNode(ruleSet2);
148:                process.addNode(ruleSet3);
149:                process.addNode(split);
150:                process.addNode(join);
151:                process.addNode(end);
152:
153:                // proces instance
154:                final RuleFlowProcessInstance processInstance = new RuleFlowProcessInstanceImpl();
155:                processInstance.setWorkingMemory(workingMemory);
156:                processInstance.setProcess(process);
157:                assertEquals(ProcessInstance.STATE_PENDING, processInstance
158:                        .getState());
159:
160:                final RuleFlowGroupImpl ruleFlowGroup0 = (RuleFlowGroupImpl) agenda
161:                        .getRuleFlowGroup("rule-flow-group-0");
162:                final RuleFlowGroupImpl ruleFlowGroup1 = (RuleFlowGroupImpl) agenda
163:                        .getRuleFlowGroup("rule-flow-group-1");
164:                final RuleFlowGroupImpl ruleFlowGroup2 = (RuleFlowGroupImpl) agenda
165:                        .getRuleFlowGroup("rule-flow-group-2");
166:                final RuleFlowGroupImpl ruleFlowGroup3 = (RuleFlowGroupImpl) agenda
167:                        .getRuleFlowGroup("rule-flow-group-3");
168:
169:                final ReteTuple tuple0 = new ReteTuple(new DefaultFactHandle(1,
170:                        "cheese"));
171:                node0.assertTuple(tuple0, context0, workingMemory);
172:
173:                final ReteTuple tuple1 = new ReteTuple(new DefaultFactHandle(1,
174:                        "cheese"));
175:                node0.assertTuple(tuple1, context0, workingMemory);
176:
177:                final ReteTuple tuple2 = new ReteTuple(new DefaultFactHandle(1,
178:                        "cheese"));
179:                node1.assertTuple(tuple2, context0, workingMemory);
180:
181:                final ReteTuple tuple3 = new ReteTuple(new DefaultFactHandle(1,
182:                        "cheese"));
183:                node2.assertTuple(tuple3, context0, workingMemory);
184:
185:                final ReteTuple tuple4 = new ReteTuple(new DefaultFactHandle(1,
186:                        "cheese"));
187:                node3.assertTuple(tuple4, context0, workingMemory);
188:
189:                // RuleFlowGroups should be populated, but the agenda shouldn't
190:                assertEquals(2, ruleFlowGroup0.size());
191:                assertEquals(1, ruleFlowGroup1.size());
192:                assertEquals(1, ruleFlowGroup2.size());
193:                assertEquals(1, ruleFlowGroup3.size());
194:                assertEquals(0, agenda.agendaSize());
195:
196:                // Activate process instance, the activations stay in the group,
197:                // but should now also be in the Agenda
198:                processInstance.start();
199:                assertEquals(ProcessInstance.STATE_ACTIVE, processInstance
200:                        .getState());
201:                assertEquals(2, ruleFlowGroup0.size());
202:                assertEquals(2, agenda.agendaSize());
203:
204:                // As we fire each rule they are removed from both the Agenda and the RuleFlowGroup
205:                agenda.fireNextItem(null);
206:                assertEquals(1, ruleFlowGroup0.size());
207:                assertEquals(1, agenda.agendaSize());
208:
209:                // on firing the last activation the child rule flow groups should 
210:                // activate and thus repopulate the agenda
211:                agenda.fireNextItem(null);
212:                workingMemory.executeQueuedActions();
213:                assertEquals(0, ruleFlowGroup0.size());
214:                assertEquals(1, ruleFlowGroup1.size());
215:                assertEquals(1, ruleFlowGroup2.size());
216:                assertEquals(2, agenda.agendaSize());
217:
218:                // we set the salience higher on rule2, so it sould fire first and empty ruleFlowGroup2
219:                agenda.fireNextItem(null);
220:                assertEquals(1, ruleFlowGroup1.size());
221:                assertEquals(0, ruleFlowGroup2.size());
222:                assertEquals(1, agenda.agendaSize());
223:
224:                // executing rule1, which should activate AND-join and thus group 3 
225:                agenda.fireNextItem(null);
226:                workingMemory.executeQueuedActions();
227:                assertEquals(0, ruleFlowGroup0.size());
228:                assertEquals(0, ruleFlowGroup1.size());
229:                assertEquals(0, ruleFlowGroup2.size());
230:                assertEquals(1, ruleFlowGroup3.size());
231:                assertEquals(1, agenda.agendaSize());
232:
233:                // executing rule3, and finishing execution
234:                agenda.fireNextItem(null);
235:                workingMemory.executeQueuedActions();
236:                assertEquals(0, ruleFlowGroup0.size());
237:                assertEquals(0, ruleFlowGroup1.size());
238:                assertEquals(0, ruleFlowGroup2.size());
239:                assertEquals(0, ruleFlowGroup3.size());
240:                assertEquals(0, agenda.agendaSize());
241:                assertEquals(ProcessInstance.STATE_COMPLETED, processInstance
242:                        .getState());
243:            }
244:
245:            /** XOR split and join */
246:            public void testRuleFlowGroup2() {
247:                final RuleBase ruleBase = RuleBaseFactory.newRuleBase();
248:
249:                final ReteooWorkingMemory workingMemory = (ReteooWorkingMemory) ruleBase
250:                        .newStatefulSession();
251:
252:                final InternalAgenda agenda = (InternalAgenda) workingMemory
253:                        .getAgenda();
254:
255:                final List list = new ArrayList();
256:
257:                // create the consequence
258:                final Consequence consequence = new Consequence() {
259:                    /**
260:                     * 
261:                     */
262:                    private static final long serialVersionUID = 400L;
263:
264:                    public void evaluate(KnowledgeHelper knowledgeHelper,
265:                            WorkingMemory workingMemory) {
266:                        list.add(knowledgeHelper.getRule());
267:                    }
268:                };
269:
270:                // create a rule for each rule flow groups
271:                final Rule rule0 = new Rule("test-rule0");
272:                rule0.setRuleFlowGroup("rule-flow-group-0");
273:                rule0.setConsequence(consequence);
274:
275:                final RuleTerminalNode node0 = new RuleTerminalNode(3,
276:                        new MockTupleSource(2), rule0, rule0.getLhs());
277:
278:                final Rule rule1 = new Rule("test-rule1");
279:                rule1.setRuleFlowGroup("rule-flow-group-1");
280:                rule1.setConsequence(consequence);
281:
282:                final RuleTerminalNode node1 = new RuleTerminalNode(4,
283:                        new MockTupleSource(2), rule1, rule1.getLhs());
284:
285:                final Rule rule2 = new Rule("test-rule2");
286:                rule2.setRuleFlowGroup("rule-flow-group-2");
287:                rule2.setConsequence(consequence);
288:                rule2.setSalience(new SalienceInteger(10));
289:
290:                final RuleTerminalNode node2 = new RuleTerminalNode(5,
291:                        new MockTupleSource(2), rule2, rule2.getLhs());
292:
293:                final Rule rule3 = new Rule("test-rule3");
294:                rule3.setRuleFlowGroup("rule-flow-group-3");
295:                rule3.setConsequence(consequence);
296:
297:                final RuleTerminalNode node3 = new RuleTerminalNode(6,
298:                        new MockTupleSource(2), rule3, rule3.getLhs());
299:
300:                final PropagationContext context0 = new PropagationContextImpl(
301:                        0, PropagationContext.ASSERTION, rule0, null);
302:
303:                // nodes
304:                final StartNode start = new StartNodeImpl();
305:                final RuleSetNode ruleSet0 = new RuleSetNodeImpl();
306:                ruleSet0.setRuleFlowGroup("rule-flow-group-0");
307:                final RuleSetNode ruleSet1 = new RuleSetNodeImpl();
308:                ruleSet1.setRuleFlowGroup("rule-flow-group-1");
309:                final RuleSetNode ruleSet2 = new RuleSetNodeImpl();
310:                ruleSet2.setRuleFlowGroup("rule-flow-group-2");
311:                final RuleSetNode ruleSet3 = new RuleSetNodeImpl();
312:                ruleSet3.setRuleFlowGroup("rule-flow-group-3");
313:                final Split split = new SplitImpl();
314:                split.setType(Split.TYPE_XOR);
315:                final Join join = new JoinImpl();
316:                join.setType(Join.TYPE_XOR);
317:                final EndNode end = new EndNodeImpl();
318:                // connections
319:                new ConnectionImpl(start, ruleSet0, Connection.TYPE_NORMAL);
320:                new ConnectionImpl(ruleSet0, split, Connection.TYPE_NORMAL);
321:                Connection out1 = new ConnectionImpl(split, ruleSet1,
322:                        Connection.TYPE_NORMAL);
323:                Connection out2 = new ConnectionImpl(split, ruleSet2,
324:                        Connection.TYPE_NORMAL);
325:                new ConnectionImpl(ruleSet1, join, Connection.TYPE_NORMAL);
326:                new ConnectionImpl(ruleSet2, join, Connection.TYPE_NORMAL);
327:                new ConnectionImpl(join, ruleSet3, Connection.TYPE_NORMAL);
328:                new ConnectionImpl(ruleSet3, end, Connection.TYPE_NORMAL);
329:                Constraint constraint1 = new org.drools.ruleflow.core.impl.ConstraintImpl();
330:                constraint1.setPriority(1);
331:                split.setConstraint(out1, constraint1);
332:                Constraint constraint2 = new org.drools.ruleflow.core.impl.ConstraintImpl();
333:                constraint2.setPriority(2);
334:                split.setConstraint(out2, constraint2);
335:
336:                // process
337:                final RuleFlowProcess process = new RuleFlowProcessImpl();
338:                process.setId("1");
339:                process.addNode(start);
340:                process.addNode(ruleSet0);
341:                process.addNode(ruleSet1);
342:                process.addNode(ruleSet2);
343:                process.addNode(ruleSet3);
344:                process.addNode(split);
345:                process.addNode(join);
346:                process.addNode(end);
347:
348:                // rules for split
349:                final Rule splitRule1 = new Rule("RuleFlow-1-" + split.getId()
350:                        + "-" + ruleSet1.getId());
351:                splitRule1.setRuleFlowGroup("DROOLS_SYSTEM");
352:                splitRule1.setConsequence(consequence);
353:
354:                final RuleTerminalNode splitNode1 = new RuleTerminalNode(7,
355:                        new MockTupleSource(2), splitRule1, splitRule1.getLhs());
356:
357:                final Rule splitRule2 = new Rule("RuleFlow-1-" + split.getId()
358:                        + "-" + ruleSet2.getId());
359:                splitRule2.setRuleFlowGroup("DROOLS_SYSTEM");
360:                splitRule2.setConsequence(consequence);
361:
362:                final RuleTerminalNode splitNode2 = new RuleTerminalNode(8,
363:                        new MockTupleSource(2), splitRule2, splitRule2.getLhs());
364:
365:                // proces instance
366:                final RuleFlowProcessInstance processInstance = new RuleFlowProcessInstanceImpl();
367:                processInstance.setWorkingMemory(workingMemory);
368:                processInstance.setProcess(process);
369:                assertEquals(ProcessInstance.STATE_PENDING, processInstance
370:                        .getState());
371:
372:                final RuleFlowGroupImpl ruleFlowGroup0 = (RuleFlowGroupImpl) agenda
373:                        .getRuleFlowGroup("rule-flow-group-0");
374:                final RuleFlowGroupImpl ruleFlowGroup1 = (RuleFlowGroupImpl) agenda
375:                        .getRuleFlowGroup("rule-flow-group-1");
376:                final RuleFlowGroupImpl ruleFlowGroup2 = (RuleFlowGroupImpl) agenda
377:                        .getRuleFlowGroup("rule-flow-group-2");
378:                final RuleFlowGroupImpl ruleFlowGroup3 = (RuleFlowGroupImpl) agenda
379:                        .getRuleFlowGroup("rule-flow-group-3");
380:
381:                final ReteTuple tuple0 = new ReteTuple(new DefaultFactHandle(1,
382:                        "cheese"));
383:                node0.assertTuple(tuple0, context0, workingMemory);
384:
385:                final ReteTuple tuple1 = new ReteTuple(new DefaultFactHandle(1,
386:                        "cheese"));
387:                node0.assertTuple(tuple1, context0, workingMemory);
388:
389:                final ReteTuple tuple2 = new ReteTuple(new DefaultFactHandle(1,
390:                        "cheese"));
391:                node1.assertTuple(tuple2, context0, workingMemory);
392:
393:                final ReteTuple tuple3 = new ReteTuple(new DefaultFactHandle(1,
394:                        "cheese"));
395:                node2.assertTuple(tuple3, context0, workingMemory);
396:
397:                final ReteTuple tuple4 = new ReteTuple(new DefaultFactHandle(1,
398:                        "cheese"));
399:                node3.assertTuple(tuple4, context0, workingMemory);
400:
401:                final ReteTuple splitTuple1 = new ReteTuple(
402:                        new DefaultFactHandle(1, "cheese"));
403:                splitNode1.assertTuple(splitTuple1, context0, workingMemory);
404:
405:                final ReteTuple splitTuple2 = new ReteTuple(
406:                        new DefaultFactHandle(1, "cheese"));
407:                splitNode2.assertTuple(splitTuple2, context0, workingMemory);
408:
409:                final RuleFlowGroupImpl systemRuleFlowGroup = (RuleFlowGroupImpl) agenda
410:                        .getRuleFlowGroup("DROOLS_SYSTEM");
411:
412:                // RuleFlowGroups should be populated, but the agenda shouldn't
413:                assertEquals(2, ruleFlowGroup0.size());
414:                assertEquals(1, ruleFlowGroup1.size());
415:                assertEquals(1, ruleFlowGroup2.size());
416:                assertEquals(1, ruleFlowGroup3.size());
417:                assertEquals(2, systemRuleFlowGroup.size());
418:                assertEquals(0, agenda.agendaSize());
419:
420:                // Activate process instance, the activations stay in the group,
421:                // but should now also be in the Agenda
422:                processInstance.start();
423:                assertEquals(ProcessInstance.STATE_ACTIVE, processInstance
424:                        .getState());
425:                assertEquals(2, ruleFlowGroup0.size());
426:                assertEquals(2, agenda.agendaSize());
427:
428:                // As we fire each rule they are removed from both the Agenda and the RuleFlowGroup
429:                agenda.fireNextItem(null);
430:                assertEquals(1, ruleFlowGroup0.size());
431:                assertEquals(1, agenda.agendaSize());
432:
433:                // XOR split should activate group1
434:                agenda.fireNextItem(null);
435:                workingMemory.executeQueuedActions();
436:                assertEquals(0, ruleFlowGroup0.size());
437:                assertEquals(1, ruleFlowGroup1.size());
438:                assertEquals(1, ruleFlowGroup2.size());
439:                assertEquals(1, agenda.agendaSize());
440:
441:                // executing group1, XOR join should activate group3 
442:                agenda.fireNextItem(null);
443:                workingMemory.executeQueuedActions();
444:                assertEquals(0, ruleFlowGroup1.size());
445:                assertEquals(1, ruleFlowGroup2.size());
446:                assertEquals(1, ruleFlowGroup3.size());
447:                assertEquals(1, agenda.agendaSize());
448:
449:                // executing rule3, and finishing execution
450:                agenda.fireNextItem(null);
451:                workingMemory.executeQueuedActions();
452:                assertEquals(0, ruleFlowGroup0.size());
453:                assertEquals(0, ruleFlowGroup1.size());
454:                assertEquals(1, ruleFlowGroup2.size());
455:                assertEquals(0, ruleFlowGroup3.size());
456:                assertEquals(0, agenda.agendaSize());
457:                assertEquals(ProcessInstance.STATE_COMPLETED, processInstance
458:                        .getState());
459:            }
460:        }
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