/*
* Copyright 2011 Red Hat 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.persistence.map.impl;
import org.drools.core.io.impl.ByteArrayResource;
import org.drools.persistence.jpa.marshaller.JPAPlaceholderResolverStrategy;
import org.junit.Assert;
import org.junit.Test;
import org.kie.internal.KnowledgeBase;
import org.kie.internal.KnowledgeBaseFactory;
import org.kie.internal.builder.KnowledgeBuilder;
import org.kie.internal.builder.KnowledgeBuilderError;
import org.kie.internal.builder.KnowledgeBuilderErrors;
import org.kie.internal.builder.KnowledgeBuilderFactory;
import org.kie.internal.runtime.StatefulKnowledgeSession;
import org.kie.api.io.ResourceType;
import org.kie.api.runtime.rule.FactHandle;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public abstract class MapPersistenceTest {
private static Logger logger = LoggerFactory.getLogger(JPAPlaceholderResolverStrategy.class);
@Test
public void createPersistentSession() {
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
StatefulKnowledgeSession crmPersistentSession = createSession( kbase );
crmPersistentSession.fireAllRules();
crmPersistentSession = createSession( kbase );
Assert.assertNotNull( crmPersistentSession );
}
@Test
public void createPersistentSessionWithRules() {
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory
.newKnowledgeBuilder();
String rule = "package org.drools.persistence.map.impl\n";
rule += "import org.drools.persistence.map.impl.Buddy;\n";
rule += "rule \"echo2\" \n";
rule += "dialect \"mvel\"\n";
rule += "when\n";
rule += " $m : Buddy()\n";
rule += "then\n";
rule += " System.out.println(\"buddy inserted\")";
rule += "end\n";
kbuilder.add( new ByteArrayResource( rule.getBytes() ),
ResourceType.DRL );
KnowledgeBuilderErrors errors = kbuilder.getErrors();
if ( errors != null && errors.size() > 0 ) {
for ( KnowledgeBuilderError error : errors ) {
logger.warn( "Error: " + error.getMessage() );
}
Assert.fail( "KnowledgeBase did not build" );
}
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );
StatefulKnowledgeSession ksession = createSession( kbase );
FactHandle buddyFactHandle = ksession.insert( new Buddy() );
ksession.fireAllRules();
Assert.assertEquals( 1,
ksession.getObjects().size() );
ksession = disposeAndReloadSession( ksession,
kbase );
Assert.assertNotNull( ksession );
Assert.assertEquals( 1,
ksession.getObjects().size() );
Assert.assertNull( "An object can't be retrieved with a FactHandle from a disposed session",
ksession.getObject( buddyFactHandle ) );
}
@Test
public void dontCreateMoreSessionsThanNecessary() {
long initialNumberOfSavedSessions = getSavedSessionsCount();
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
StatefulKnowledgeSession crmPersistentSession = createSession(kbase);
long ksessionId = crmPersistentSession.getId();
crmPersistentSession.fireAllRules();
crmPersistentSession = disposeAndReloadSession(crmPersistentSession, kbase);
Assert.assertEquals(ksessionId, crmPersistentSession.getId());
ksessionId = crmPersistentSession.getId();
crmPersistentSession.fireAllRules();
crmPersistentSession = disposeAndReloadSession(crmPersistentSession, kbase);
crmPersistentSession.fireAllRules();
Assert.assertEquals(initialNumberOfSavedSessions + 1, getSavedSessionsCount());
crmPersistentSession.dispose();
}
@Test
public void insertObjectIntoKsessionAndRetrieve() {
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
StatefulKnowledgeSession crmPersistentSession = createSession(kbase);
Buddy bestBuddy = new Buddy("john");
crmPersistentSession.insert(bestBuddy);
crmPersistentSession = disposeAndReloadSession(crmPersistentSession, kbase);
Object obtainedBuddy = crmPersistentSession
.getObjects().iterator().next();
Assert.assertNotSame( bestBuddy, obtainedBuddy );
Assert.assertEquals(bestBuddy, obtainedBuddy);
crmPersistentSession.dispose();
}
protected abstract StatefulKnowledgeSession createSession(KnowledgeBase kbase);
protected abstract StatefulKnowledgeSession disposeAndReloadSession(StatefulKnowledgeSession crmPersistentSession,
KnowledgeBase kbase);
protected abstract long getSavedSessionsCount();
}