| /* |
| * 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.felix.dm.impl.index; |
| |
| import java.util.Arrays; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.apache.felix.dm.FilterIndex; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.Constants; |
| import org.osgi.framework.InvalidSyntaxException; |
| import org.osgi.framework.ServiceEvent; |
| import org.osgi.framework.ServiceListener; |
| import org.osgi.framework.ServiceReference; |
| |
| /** |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| public class BundleContextInterceptor extends BundleContextInterceptorBase { |
| private final ServiceRegistryCache m_cache; |
| |
| public BundleContextInterceptor(ServiceRegistryCache cache, BundleContext context) { |
| super(context); |
| m_cache = cache; |
| } |
| |
| public void addServiceListener(ServiceListener listener, String filter) throws InvalidSyntaxException { |
| FilterIndex filterIndex = m_cache.hasFilterIndexFor(null, filter); |
| if (filterIndex != null) { |
| filterIndex.addServiceListener(listener, filter); |
| } |
| else { |
| // System.out.println("BCI:Listener " + listener.getClass().getName() + " filter " + filter); |
| m_context.addServiceListener(listener, filter); |
| } |
| } |
| |
| public void addServiceListener(ServiceListener listener) { |
| FilterIndex filterIndex = m_cache.hasFilterIndexFor(null, null); |
| if (filterIndex != null) { |
| filterIndex.addServiceListener(listener, null); |
| } |
| else { |
| // System.out.println("BCI:Listener " + listener.getClass().getName() + " without filter"); |
| m_context.addServiceListener(listener); |
| } |
| } |
| |
| public void removeServiceListener(ServiceListener listener) { |
| // remove servicelistener. although it would be prettier to find the correct filterindex first it's |
| // probaby faster to do a brute force removal. |
| Iterator filterIndexIterator = m_cache.getFilterIndices().iterator(); |
| while (filterIndexIterator.hasNext()) { |
| ((FilterIndex) filterIndexIterator.next()).removeServiceListener(listener); |
| } |
| m_context.removeServiceListener(listener); |
| } |
| |
| public ServiceReference[] getServiceReferences(String clazz, String filter) throws InvalidSyntaxException { |
| // first we ask the cache if there is an index for our request (class and filter combination) |
| FilterIndex filterIndex = m_cache.hasFilterIndexFor(clazz, filter); |
| if (filterIndex != null) { |
| List /* <ServiceReference> */ result = filterIndex.getAllServiceReferences(clazz, filter); |
| Iterator iterator = result.iterator(); |
| while (iterator.hasNext()) { |
| ServiceReference reference = (ServiceReference) iterator.next(); |
| String[] list = (String[]) reference.getProperty(Constants.OBJECTCLASS); |
| for (int i = 0; i < list.length; i++) { |
| if (!reference.isAssignableTo(m_context.getBundle(), list[i])) { |
| iterator.remove(); |
| break; |
| } |
| } |
| } |
| if (result == null || result.size() == 0) { |
| return null; |
| } |
| return (ServiceReference[]) result.toArray(new ServiceReference[result.size()]); |
| } |
| else { |
| // if they don't know, we ask the real bundle context instead |
| return m_context.getServiceReferences(clazz, filter); |
| } |
| } |
| |
| public ServiceReference[] getAllServiceReferences(String clazz, String filter) throws InvalidSyntaxException { |
| // first we ask the cache if there is an index for our request (class and filter combination) |
| FilterIndex filterIndex = m_cache.hasFilterIndexFor(clazz, filter); |
| if (filterIndex != null) { |
| List /* <ServiceReference> */ result = filterIndex.getAllServiceReferences(clazz, filter); |
| if (result == null || result.size() == 0) { |
| return null; |
| } |
| return (ServiceReference[]) result.toArray(new ServiceReference[result.size()]); |
| } |
| else { |
| // if they don't know, we ask the real bundle context instead |
| return m_context.getAllServiceReferences(clazz, filter); |
| } |
| } |
| |
| public ServiceReference getServiceReference(String clazz) { |
| ServiceReference[] references; |
| try { |
| references = getServiceReferences(clazz, null); |
| if (references == null || references.length == 0) { |
| return null; |
| } |
| Arrays.sort(references); |
| return references[references.length - 1]; |
| } |
| catch (InvalidSyntaxException e) { |
| throw new Error("Invalid filter syntax thrown for null filter.", e); |
| } |
| } |
| |
| public void serviceChanged(ServiceEvent event) { |
| m_cache.serviceChangedForFilterIndices(event); |
| } |
| } |