/*
* Copyright 2013 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.kie.aries.blueprint.factorybeans;
import org.drools.compiler.kie.builder.impl.KieContainerImpl;
import org.drools.compiler.kie.builder.impl.KieProject;
import org.kie.api.KieBase;
import org.kie.api.KieServices;
import org.kie.api.builder.ReleaseId;
import org.kie.api.builder.model.KieSessionModel;
import org.kie.api.runtime.KieContainer;
import org.kie.api.runtime.KieSessionConfiguration;
import org.kie.api.runtime.StatelessKieSession;
import org.osgi.framework.BundleContext;
import org.osgi.service.blueprint.container.BlueprintEvent;
import org.osgi.service.blueprint.container.BlueprintListener;
public class KieObjectsResolver implements BlueprintListener {
private BundleContext bundleContext;
public KieBase resolveKBase(String id, ReleaseId releaseId) {
KieContainer kieContainer = resolveKContainer(releaseId);
KieBase kieBase = kieContainer.getKieBase(id);
if (kieBase == null) {
kieBase = kieContainer.newKieBase(id, null);
}
return kieBase;
}
public Object resolveKSession(String id, ReleaseId releaseId) {
KieContainer kieContainer = resolveKContainer(releaseId);
// KieBase kbase = resolveKBase(kbaseName, releaseId);
KieProject kProject = ((KieContainerImpl) kieContainer).getKieProject();
KieSessionModel kieSessionModel = kProject.getKieSessionModel(id);
if ( kieSessionModel == null) {
return null;
}
if (kieSessionModel.getType() == KieSessionModel.KieSessionType.STATEFUL) {
return ((KieContainerImpl) kieContainer).getKieSession(id);
} else if (kieSessionModel.getType() == KieSessionModel.KieSessionType.STATELESS) {
return ((KieContainerImpl) kieContainer).getStatelessKieSession(id);
}
return null;
}
private KieContainer resolveKContainer(ReleaseId releaseId) {
if (releaseId == null) {
throw new IllegalArgumentException("Cannot resolve a KieContainer using a null ReleaseId");
}
KieContainer kieContainer = KieServices.Factory.get().newKieContainer(releaseId);
if ( kieContainer == null) {
throw new IllegalArgumentException("Could not find a KModule with ReleaseId ("+releaseId+")");
}
return kieContainer;
}
public StatelessKieSession newStatelessSession(String kbaseName, ReleaseId releaseId, KieSessionConfiguration conf) {
KieBase kieBase = resolveKBase(kbaseName, releaseId);
if (kieBase == null) {
KieContainer kieContainer = resolveKContainer(releaseId);
if (conf == null) {
return kieContainer.newStatelessKieSession();
} else {
return kieContainer.newStatelessKieSession(conf);
}
} else {
if (conf == null) {
return kieBase.newStatelessKieSession();
} else {
return kieBase.newStatelessKieSession(conf);
}
}
}
public Object newStatefulSession(String kbaseName, ReleaseId releaseId, KieSessionConfiguration conf) {
KieBase kieBase = resolveKBase(kbaseName, releaseId);
if (kieBase == null) {
KieContainer kieContainer = resolveKContainer(releaseId);
if (conf == null) {
return kieContainer.newKieSession(kbaseName);
} else {
return kieContainer.newKieSession(conf);
}
} else {
if (conf == null) {
return kieBase.newKieSession();
} else {
return kieBase.newKieSession(conf, null);
}
}
}
@Override public void blueprintEvent(BlueprintEvent event) {
//TODO
System.out.println(">> Something happen : " + event.getType());
}
}