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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 conversation.client;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleContext;
import org.osgi.framework.Constants;
import org.osgi.framework.ServiceFactory;
import org.osgi.framework.ServiceReference;
import org.osgi.framework.ServiceRegistration;
import conversation.client.ConversationalClientStatefulImpl;
import conversation.client.ConversationalClientStatelessImpl;
import conversation.referenceclient.ConversationalReferenceClient;
import conversation.service.ConversationalService;
public class ConversationalClientServiceFactory implements ServiceFactory {
private Class<?> clazz;
private BundleContext bundleContext;
private int serviceNum;
public ConversationalClientServiceFactory(Class<?> clazz, BundleContext bundleContext, int serviceNum) {
this.clazz = clazz;
this.bundleContext = bundleContext;
this.serviceNum = serviceNum;
}
public Object getService(Bundle bundle, ServiceRegistration reg) {
try {
Object instance = clazz.newInstance();
ConversationalClientStatelessImpl statelessClient = null;
ConversationalClientStatefulImpl statefulClient = null;
if (serviceNum == 1 || serviceNum == 2) {
ServiceReference ref = bundleContext.getServiceReference(ConversationalReferenceClient.class.getName());
statelessClient = (ConversationalClientStatelessImpl)instance;
statelessClient.conversationalReferenceClient =
(ConversationalReferenceClient)bundleContext.getService(ref);
}
if (serviceNum == 1) {
ServiceReference ref = getServiceReference(ConversationalService.class.getName(),
"(component.name=ConversationalServiceStateless)");
statelessClient.conversationalService = (ConversationalService)bundleContext.getService(ref);
}
if (serviceNum == 2) {
ServiceReference ref = getServiceReference(ConversationalService.class.getName(),
"(component.name=ConversationalServiceStateful)");
statelessClient.conversationalService = (ConversationalService)bundleContext.getService(ref);
}
if (serviceNum == 3 || serviceNum == 4) {
ServiceReference ref = bundleContext.getServiceReference(ConversationalReferenceClient.class.getName());
statefulClient = (ConversationalClientStatefulImpl)instance;
statefulClient.conversationalReferenceClient =
(ConversationalReferenceClient)bundleContext.getService(ref);
}
if (serviceNum == 3) {
ServiceReference ref = getServiceReference(ConversationalService.class.getName(),
"(component.name=ConversationalServiceStateless)");
statefulClient.conversationalService = (ConversationalService)bundleContext.getService(ref);
}
if (serviceNum == 4) {
ServiceReference ref = getServiceReference(ConversationalService.class.getName(),
"(component.name=ConversationalServiceStateful)");
statefulClient.conversationalService = (ConversationalService)bundleContext.getService(ref);
}
return instance;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
public void ungetService(Bundle bundle, ServiceRegistration reg, Object obj) {
}
private ServiceReference getServiceReference(String name, String filter) throws Exception {
ServiceReference refs[] = bundleContext.getServiceReferences(name, filter);
ServiceReference ref = refs[0];
int ranking = 0;
if (ref.getProperty(Constants.SERVICE_RANKING) instanceof Integer)
ranking = (Integer)ref.getProperty(Constants.SERVICE_RANKING);
for (int i = 1; i < refs.length; i++) {
int thisranking = 0;
if (refs[i].getProperty(Constants.SERVICE_RANKING) instanceof Integer) {
thisranking = (Integer)refs[i].getProperty(Constants.SERVICE_RANKING);
}
if (thisranking > ranking) {
ref = refs[i];
ranking = thisranking;
}
}
return ref;
}
}
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