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1   package org.apache.maven.doxia.module.site.manager;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *   http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import java.util.Collection;
23  import java.util.LinkedHashMap;
24  import java.util.Map;
25  
26  import org.apache.maven.doxia.module.site.SiteModule;
27  
28  /**
29   * Simple implementation of the SiteModuleManager interface.
30   *
31   * @author Jason van Zyl
32   * @version $Id: DefaultSiteModuleManager.java 1090706 2011-04-09 23:15:28Z hboutemy $
33   * @since 1.0
34   * @plexus.component
35   */
36  public class DefaultSiteModuleManager
37      implements SiteModuleManager
38  {
39      /**
40       * @plexus.requirement role="org.apache.maven.doxia.module.site.SiteModule"
41       */
42      private Map<String, SiteModule> siteModules;
43  
44      private Collection<SiteModule> siteModulesValues;
45  
46      /** {@inheritDoc} */
47      public Collection<SiteModule> getSiteModules()
48      {
49          if ( siteModulesValues == null )
50          {
51              Map<Class<?>, SiteModule> siteModulesTmp = new LinkedHashMap<Class<?>, SiteModule>();
52              for ( SiteModule module : siteModules.values() )
53              {
54                  siteModulesTmp.put( module.getClass(), module );
55              }
56              siteModulesValues = siteModulesTmp.values();
57          }
58  
59          return siteModulesValues;
60      }
61  
62      /** {@inheritDoc} */
63      public SiteModule getSiteModule( String id )
64          throws SiteModuleNotFoundException
65      {
66          SiteModule siteModule = siteModules.get( id );
67  
68          if ( siteModule == null )
69          {
70              throw new SiteModuleNotFoundException( "Cannot find site module id = " + id );
71          }
72  
73          return siteModule;
74      }
75  }