/*
* Copyright 2005 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.drools.event.rule;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.ArrayList;
import java.util.List;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import static org.junit.Assert.*;
import org.drools.Cheese;
import org.drools.KnowledgeBase;
import org.drools.KnowledgeBaseFactory;
import org.drools.base.ClassFieldAccessorCache;
import org.drools.base.ClassFieldReader;
import org.drools.base.ClassObjectType;
import org.drools.base.FieldFactory;
import org.drools.base.ValueType;
import org.drools.base.evaluators.ComparableEvaluatorsDefinition;
import org.drools.base.evaluators.EqualityEvaluatorsDefinition;
import org.drools.base.evaluators.EvaluatorRegistry;
import org.drools.base.evaluators.MatchesEvaluatorsDefinition;
import org.drools.base.evaluators.Operator;
import org.drools.base.evaluators.SetEvaluatorsDefinition;
import org.drools.base.evaluators.SoundslikeEvaluatorsDefinition;
import org.drools.common.InternalFactHandle;
import org.drools.definition.KnowledgePackage;
import org.drools.definitions.impl.KnowledgePackageImp;
import org.drools.rule.LiteralConstraint;
import org.drools.rule.Package;
import org.drools.rule.Pattern;
import org.drools.rule.Rule;
import org.drools.runtime.StatefulKnowledgeSession;
import org.drools.runtime.rule.FactHandle;
import org.drools.spi.Consequence;
import org.drools.spi.Evaluator;
import org.drools.spi.FieldValue;
import org.drools.spi.KnowledgeHelper;
public class AgendaEventSupportTest {
public static EvaluatorRegistry registry = new EvaluatorRegistry();
static {
registry.addEvaluatorDefinition( new EqualityEvaluatorsDefinition() );
registry.addEvaluatorDefinition( new ComparableEvaluatorsDefinition() );
registry.addEvaluatorDefinition( new SetEvaluatorsDefinition() );
registry.addEvaluatorDefinition( new MatchesEvaluatorsDefinition() );
registry.addEvaluatorDefinition( new SoundslikeEvaluatorsDefinition() );
}
// public void testIsSerializable() {
// assertTrue( Serializable.class.isAssignableFrom( AgendaEventSupport.class ) );
// }
@Test
public void testAgendaEventListener() throws Exception {
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
// create a simple package with one rule to test the events
final Package pkg = new Package( "org.drools.test" );
final Rule rule = new Rule( "test1" );
rule.setAgendaGroup( "test group" );
final ClassObjectType cheeseObjectType = new ClassObjectType( Cheese.class );
final Pattern pattern = new Pattern( 0,
cheeseObjectType );
pkg.setClassFieldAccessorCache( new ClassFieldAccessorCache( Thread.currentThread().getContextClassLoader() ) );
pkg.getClassFieldAccessorStore().setEagerWire( true );
final ClassFieldReader extractor = pkg.getClassFieldAccessorStore().getReader( Cheese.class,
"type",
getClass().getClassLoader() );
final FieldValue field = FieldFactory.getFieldValue( "cheddar" );
final Evaluator evaluator = registry.getEvaluator( ValueType.STRING_TYPE,
Operator.EQUAL,
null );
final LiteralConstraint constraint = new LiteralConstraint( extractor,
evaluator,
field );
pattern.addConstraint( constraint );
rule.addPattern( pattern );
rule.setConsequence( new Consequence() {
public void evaluate(final KnowledgeHelper knowledgeHelper,
final org.drools.WorkingMemory workingMemory) throws Exception {
}
public void readExternal(ObjectInput in) throws IOException,
ClassNotFoundException {
}
public void writeExternal(ObjectOutput out) throws IOException {
}
public String getName() {
// TODO Auto-generated method stub
return null;
}
} );
pkg.addRule( rule );
List<KnowledgePackage> pkgs = new ArrayList<KnowledgePackage>();
pkgs.add( new KnowledgePackageImp( pkg ) );
kbase.addKnowledgePackages( pkgs );
// create a new working memory and add an AgendaEventListener
StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
final List agendaList = new ArrayList();
final AgendaEventListener agendaEventListener = new AgendaEventListener() {
public void activationCancelled(ActivationCancelledEvent event) {
assertNotNull( event.getKnowledgeRuntime() );
agendaList.add( event );
}
public void activationCreated(ActivationCreatedEvent event) {
assertNotNull( event.getKnowledgeRuntime() );
agendaList.add( event );
}
public void afterActivationFired(AfterActivationFiredEvent event) {
assertNotNull( event.getKnowledgeRuntime() );
agendaList.add( event );
}
public void agendaGroupPopped(AgendaGroupPoppedEvent event) {
assertNotNull( event.getKnowledgeRuntime() );
agendaList.add( event );
}
public void agendaGroupPushed(AgendaGroupPushedEvent event) {
assertNotNull( event.getKnowledgeRuntime() );
agendaList.add( event );
}
public void beforeActivationFired(BeforeActivationFiredEvent event) {
assertNotNull( event.getKnowledgeRuntime() );
agendaList.add( event );
}
public void beforeRuleFlowGroupActivated(RuleFlowGroupActivatedEvent event) {
assertNotNull( event.getKnowledgeRuntime() );
agendaList.add( event );
}
public void afterRuleFlowGroupActivated(RuleFlowGroupActivatedEvent event) {
assertNotNull( event.getKnowledgeRuntime() );
agendaList.add( event );
}
public void beforeRuleFlowGroupDeactivated(RuleFlowGroupDeactivatedEvent event) {
assertNotNull( event.getKnowledgeRuntime() );
agendaList.add( event );
}
public void afterRuleFlowGroupDeactivated(RuleFlowGroupDeactivatedEvent event) {
assertNotNull( event.getKnowledgeRuntime() );
agendaList.add( event );
}
};
ksession.addEventListener( agendaEventListener );
assertEquals( 1, ksession.getAgendaEventListeners().size() );
// assert the cheese fact
final Cheese cheddar = new Cheese( "cheddar",
15 );
FactHandle cheddarHandle = ksession.insert( cheddar );
// should be one ActivationCreatedEvent
assertEquals( 1,
agendaList.size() );
ActivationCreatedEvent createdEvent = (ActivationCreatedEvent) agendaList.get( 0 );
assertSame( cheddarHandle,
createdEvent.getActivation().getFactHandles().toArray()[0] );
// clear the agenda to check CLEAR events occur
ksession.getAgenda().clear();
ActivationCancelledEvent cancelledEvent = (ActivationCancelledEvent) agendaList.get( 1 );
assertEquals( ActivationCancelledCause.CLEAR,
cancelledEvent.getCause() );
agendaList.clear();
// update results in an ActivationCreatedEvent
cheddar.setPrice( 14 );
ksession.update( cheddarHandle,
cheddar );
assertEquals( 1,
agendaList.size() );
createdEvent = (ActivationCreatedEvent) agendaList.get( 0 );
assertSame( cheddarHandle,
createdEvent.getActivation().getFactHandles().toArray()[0] );
agendaList.clear();
// update should not result in cancelation+activation events
cheddar.setPrice( 14 );
ksession.update( cheddarHandle,
cheddar );
assertEquals( 0,
agendaList.size() );
//cancelledEvent = (ActivationCancelledEvent) agendaList.get( 0 );
//assertEquals( ActivationCancelledCause.WME_MODIFY, cancelledEvent.getCause() );
// assertSame( cheddarHandle,
// cancelledEvent.getActivation().getFactHandles().toArray()[0] );
// createdEvent = (ActivationCreatedEvent) agendaList.get( 1 );
// assertSame( cheddarHandle,
// createdEvent.getActivation().getFactHandles().toArray()[0] );
// agendaList.clear();
// retract results in a ActivationCancelledEvent, note the object is not resolveable now as it no longer exists
ksession.retract( cheddarHandle );
assertEquals( 1,
agendaList.size() );
cancelledEvent = (ActivationCancelledEvent) agendaList.get( 0 );
assertNull( ((InternalFactHandle) cancelledEvent.getActivation().getFactHandles().toArray()[0]).getObject() );
// re-assert the fact so we can test the agenda group events
cheddarHandle = ksession.insert( cheddar );
agendaList.clear();
// setFocus results in an AgendaGroupPushedEvent
ksession.getAgenda().getAgendaGroup( "test group" ).setFocus();
assertEquals( 1,
agendaList.size() );
final AgendaGroupPushedEvent pushedEvent = (AgendaGroupPushedEvent) agendaList.get( 0 );
assertEquals( "test group",
pushedEvent.getAgendaGroup().getName() );
agendaList.clear();
// fireAllRules results in a BeforeActivationFiredEvent and an AfterActivationFiredEvent
// the AgendaGroup becomes empty, which results in a popped event.
ksession.fireAllRules();
assertEquals( 3,
agendaList.size() );
final BeforeActivationFiredEvent beforeEvent = (BeforeActivationFiredEvent) agendaList.get( 0 );
assertSame( cheddarHandle,
beforeEvent.getActivation().getFactHandles().toArray()[0] );
final AfterActivationFiredEvent afterEvent = (AfterActivationFiredEvent) agendaList.get( 1 );
assertSame( cheddarHandle,
afterEvent.getActivation().getFactHandles().toArray()[0] );
final AgendaGroupPoppedEvent poppedEvent = (AgendaGroupPoppedEvent) agendaList.get( 2 );
assertEquals( "test group",
poppedEvent.getAgendaGroup().getName() );
}
}