| /* |
| * 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; |
| |
| import java.util.List; |
| |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.ServiceEvent; |
| import org.osgi.framework.ServiceListener; |
| import org.osgi.framework.ServiceReference; |
| |
| /** |
| * A filter index is an interface you can implement to create your own, optimized index for specific filter expressions. |
| * |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| public interface FilterIndex { |
| /** Opens this filter index. */ |
| public void open(BundleContext context); |
| /** Closes this filter index. */ |
| public void close(); |
| /** Determines if the combination of class and filter is applicable for this filter index. */ |
| public boolean isApplicable(String clazz, String filter); |
| /** Returns all service references that match the specified class and filter. Never returns null. */ |
| public List<ServiceReference> getAllServiceReferences(String clazz, String filter); |
| /** Invoked whenever a service event occurs. */ |
| public void serviceChanged(ServiceEvent event); |
| /** Adds a service listener to this filter index. */ |
| public void addServiceListener(ServiceListener listener, String filter); |
| /** Removes a service listener from this filter index. If the listener is not present in the filter index, this method does nothing. */ |
| public void removeServiceListener(ServiceListener listener); |
| } |