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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 org.apache.tuscany.osgi.util;
import java.util.Dictionary;
import org.osgi.framework.BundleContext;
import org.osgi.framework.InvalidSyntaxException;
import org.osgi.framework.ServiceListener;
import org.osgi.framework.ServiceReference;
import org.osgi.framework.ServiceRegistration;
public final class BundleContextUtil {
private static BundleContext context;
private static final ServiceReference EMPTY_REFERENCE_ARRAY[] = {};
private BundleContextUtil() {
}
public static void setContext(BundleContext ctx) {
context = ctx;
}
public static ServiceReference[] getServiceReference(String clazz, String filter) throws InvalidSyntaxException {
ServiceReference[] references;
references = context.getServiceReferences(clazz, filter);
if (references == null) {
references = EMPTY_REFERENCE_ARRAY;
}
return references;
}
public static Object getService(ServiceReference reference) {
return context.getService(reference);
}
public static Object getService(ServiceReference references[]) {
if (references == null) {
return null;
}
return context.getService(references[0]);
}
public static void addServiceListener(ServiceListener listener, String filter) {
try {
if (filter != null) {
context.addServiceListener(listener, filter);
} else {
context.addServiceListener(listener);
}
} catch (InvalidSyntaxException e) {
//FIXME
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static void removeServiceListener(ServiceListener listener) {
context.removeServiceListener(listener);
}
public static ServiceRegistration registerService(String serviceName,
Object serviceFactory,
Dictionary properties) {
return context.registerService(serviceName, serviceFactory, properties);
}
public static boolean trackServiceReference(String filter, ServiceListener listener) {
try {
context.addServiceListener(listener, filter);
return true;
} catch (InvalidSyntaxException e) {
return false;
}
}
}
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