001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.commons.discovery.resource.names;
018    
019    import org.apache.commons.discovery.ResourceDiscover;
020    import org.apache.commons.discovery.ResourceNameDiscover;
021    import org.apache.commons.discovery.resource.ClassLoaders;
022    
023    
024    /**
025     * Provide JDK 1.3 style service discovery...
026     * 
027     * The caller will first configure the discoverer by creating a
028     * root Discoverer for the files.
029     *
030     * @author Richard A. Sitze
031     * @author Craig R. McClanahan
032     * @author Costin Manolache
033     * @author James Strachan
034     */
035    public class DiscoverServiceNames
036        extends DiscoverNamesInFile
037        implements ResourceNameDiscover
038    {
039        protected static final String SERVICE_HOME = "META-INF/services/";
040        
041        /** Construct a new service discoverer
042         */
043        public DiscoverServiceNames() {
044            super(SERVICE_HOME, null);
045        }
046            
047        /**
048         *  Construct a new resource discoverer
049         */
050        public DiscoverServiceNames(String prefix, String suffix) {
051            super((prefix == null) ? SERVICE_HOME : SERVICE_HOME + prefix, suffix);
052        }
053        
054        /**
055         *  Construct a new resource discoverer
056         */
057        public DiscoverServiceNames(ClassLoaders loaders) {
058            super(loaders, SERVICE_HOME, null);
059        }
060        
061        /**
062         *  Construct a new resource discoverer
063         */
064        public DiscoverServiceNames(ClassLoaders loaders, String prefix, String suffix) {
065            super(loaders, (prefix == null) ? SERVICE_HOME : SERVICE_HOME + prefix, suffix);
066        }
067        
068        /** Construct a new service discoverer
069         */
070        public DiscoverServiceNames(ResourceDiscover discoverer) {
071            super(discoverer, SERVICE_HOME, null);
072        }
073        
074        /** Construct a new service discoverer
075         */
076        public DiscoverServiceNames(ResourceDiscover discoverer, String prefix, String suffix) {
077            super(discoverer, (prefix == null) ? SERVICE_HOME : SERVICE_HOME + prefix, suffix);
078        }
079    }