| /* |
| * 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.net.URL; |
| |
| /** |
| * Service interface for anybody wanting to be notified of changes to resources. |
| * |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| public interface ResourceHandler { |
| /** Name of the property that's used to describe the filter condition for a resource. */ |
| public static final String FILTER = "filter"; |
| /** Exact URL that this handler is looking for. Can be used instead of a filter to be very explicit about the resource you're looking for. */ |
| public static final String URL = "url"; |
| |
| /** The host part of the URL. */ |
| public static final String HOST = "host"; |
| /** The path part of the URL. */ |
| public static final String PATH = "path"; |
| /** The protocol part of the URL. */ |
| public static final String PROTOCOL = "protocol"; |
| /** The port part of the URL. */ |
| public static final String PORT = "port"; |
| |
| /** Invoked whenever a new resource is added. */ |
| public void added(URL resource); |
| /** Invoked whenever an existing resource changes. */ |
| public void changed(URL resource); |
| /** Invoked whenever an existing resource is removed. */ |
| public void removed(URL resource); |
| } |