/*
* Copyright 2015 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
*
* 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.jbpm.simulation.impl;
import java.util.ArrayList;
import java.util.List;
import org.jbpm.simulation.AggregatedSimulationEvent;
import org.jbpm.simulation.SimulationEvent;
import org.jbpm.simulation.impl.events.AggregatedActivitySimulationEvent;
import org.jbpm.simulation.impl.events.AggregatedProcessSimulationEvent;
import org.kie.api.io.Resource;
import org.kie.api.io.ResourceType;
import org.kie.api.runtime.KieSession;
import org.kie.internal.builder.KnowledgeBuilder;
import org.kie.internal.builder.KnowledgeBuilderFactory;
import org.kie.internal.io.ResourceFactory;
public class WorkingMemorySimulationRepository extends InMemorySimulationRepository {
private KieSession ksession;
private boolean fireRulesOnStore = false;
public WorkingMemorySimulationRepository() {
}
public WorkingMemorySimulationRepository(String... rules) {
this(false, rules);
}
public WorkingMemorySimulationRepository(Resource... rules) {
this(false, rules);
}
public WorkingMemorySimulationRepository(boolean fireRulesOnStore, Resource... rules) {
this.fireRulesOnStore = fireRulesOnStore;
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
for (Resource path : rules) {
kbuilder.add(path, ResourceType.DRL);
}
if (kbuilder.hasErrors()) {
throw new RuntimeException("Error while building knowledge base: " + kbuilder.getErrors());
}
this.ksession = kbuilder.newKnowledgeBase().newKieSession();
try {
// register global for aggregated events
ksession.setGlobal("logger", new SystemOutLogger());
ksession.setGlobal("simulation", new ArrayList<AggregatedActivitySimulationEvent>());
ksession.setGlobal("summary", new ArrayList<AggregatedActivitySimulationEvent>());
AggregatedProcessSimulationEvent init = new AggregatedProcessSimulationEvent("", 0, 0, 0);
List processOnlyList = new ArrayList<AggregatedSimulationEvent>();
processOnlyList.add(init);
ksession.setGlobal("processEventsOnly", processOnlyList);
} catch (Exception e) {
// catch it as there could be no simulation global declared
}
}
public WorkingMemorySimulationRepository(boolean fireRulesOnStore, String... rules) {
this.fireRulesOnStore = fireRulesOnStore;
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
for (String path : rules) {
kbuilder.add(ResourceFactory.newClassPathResource(path), ResourceType.DRL);
}
if (kbuilder.hasErrors()) {
throw new RuntimeException("Error while building knowledge base: " + kbuilder.getErrors());
}
this.ksession = kbuilder.newKnowledgeBase().newKieSession();
try {
ksession.setGlobal("logger", new SystemOutLogger());
// register global for aggregated events
ksession.setGlobal("simulation", new ArrayList<AggregatedActivitySimulationEvent>());
} catch (Exception e) {
// catch it as there could be no simulation global declared
}
}
public void storeEvent(SimulationEvent event) {
super.storeEvent(event);
ksession.insert(event);
if (fireRulesOnStore) {
ksession.fireAllRules();
}
}
public void fireAllRules() {
ksession.fireAllRules();
}
public KieSession getSession() {
return this.ksession;
}
public List<AggregatedSimulationEvent> getAggregatedEvents() {
return (List<AggregatedSimulationEvent>) this.ksession.getGlobal("simulation");
}
public Object getGlobal(String globalName) {
return this.ksession.getGlobal(globalName);
}
@Override
public void close() {
super.close();
this.ksession.dispose();
}
}