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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.commons.discovery.resource.names;
18  
19  import org.apache.commons.discovery.ResourceDiscover;
20  import org.apache.commons.discovery.ResourceNameDiscover;
21  import org.apache.commons.discovery.resource.ClassLoaders;
22  
23  /**
24   * Provide JDK 1.3 style service discovery...
25   *
26   * The caller will first configure the discoverer by creating a
27   * root Discoverer for the files.
28   */
29  public class DiscoverServiceNames extends DiscoverNamesInFile implements ResourceNameDiscover {
30  
31      protected static final String SERVICE_HOME = "META-INF/services/";
32  
33      /**
34       * Construct a new service discoverer.
35       */
36      public DiscoverServiceNames() {
37          super(SERVICE_HOME, null);
38      }
39  
40      /**
41       * Construct a new resource discoverer.
42       *
43       * @param prefix The resource name prefix
44       * @param suffix The resource name suffix
45       */
46      public DiscoverServiceNames(String prefix, String suffix) {
47          super((prefix == null) ? SERVICE_HOME : SERVICE_HOME + prefix, suffix);
48      }
49  
50      /**
51       * Construct a new resource discoverer.
52       *
53       * @param loaders The class loaders holder
54       */
55      public DiscoverServiceNames(ClassLoaders loaders) {
56          super(loaders, SERVICE_HOME, null);
57      }
58  
59      /**
60       * Construct a new resource discoverer.
61       *
62       * @param loaders The class loaders holder
63       * @param prefix The resource name prefix
64       * @param suffix The resource name suffix
65       */
66      public DiscoverServiceNames(ClassLoaders loaders, String prefix, String suffix) {
67          super(loaders, (prefix == null) ? SERVICE_HOME : SERVICE_HOME + prefix, suffix);
68      }
69  
70      /**
71       * Construct a new service discoverer.
72       *
73       * @param discoverer The discoverer to resolve resources
74       */
75      public DiscoverServiceNames(ResourceDiscover discoverer) {
76          super(discoverer, SERVICE_HOME, null);
77      }
78  
79      /**
80       * Construct a new service discoverer.
81       *
82       * @param discoverer The discoverer to resolve resources
83       * @param prefix The resource name prefix
84       * @param suffix The resource name suffix
85       */
86      public DiscoverServiceNames(ResourceDiscover discoverer, String prefix, String suffix) {
87          super(discoverer, (prefix == null) ? SERVICE_HOME : SERVICE_HOME + prefix, suffix);
88      }
89  
90  }