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1   /*
2    * This file is part of dependency-check-core.
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *     http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   *
16   * Copyright (c) 2012 Jeremy Long. All Rights Reserved.
17   */
18  package org.owasp.dependencycheck.data.update;
19  
20  import java.util.Iterator;
21  import java.util.ServiceLoader;
22  import javax.annotation.concurrent.NotThreadSafe;
23  
24  /**
25   * The CachedWebDataSource Service Loader. This class loads all services that
26   * implement {@link org.owasp.dependencycheck.data.update.CachedWebDataSource}.
27   *
28   * @author Jeremy Long
29   */
30  @NotThreadSafe
31  public class UpdateService {
32  
33      /**
34       * the service loader for CachedWebDataSource.
35       */
36      private final ServiceLoader<CachedWebDataSource> loader;
37  
38      /**
39       * Creates a new instance of UpdateService.
40       *
41       * @param classLoader the ClassLoader to use when dynamically loading
42       * Analyzer and Update services
43       */
44      public UpdateService(ClassLoader classLoader) {
45          loader = ServiceLoader.load(CachedWebDataSource.class, classLoader);
46      }
47  
48      /**
49       * Returns an Iterator for all instances of the CachedWebDataSource
50       * interface.
51       *
52       * @return an iterator of CachedWebDataSource.
53       */
54      public Iterator<CachedWebDataSource> getDataSources() {
55          return loader.iterator();
56      }
57  }