WebFrameworkSupport


1   /*
2    * The contents of this file are subject to the terms of the Common Development
3    * and Distribution License (the License). You may not use this file except in
4    * compliance with the License.
5    *
6    * You can obtain a copy of the License at http://www.netbeans.org/cddl.html
7    * or http://www.netbeans.org/cddl.txt.
8    *
9    * When distributing Covered Code, include this CDDL Header Notice in each file
10   * and include the License file at http://www.netbeans.org/cddl.txt.
11   * If applicable, add the following below the CDDL Header, with the fields
12   * enclosed by brackets [] replaced by your own identifying information:
13   * "Portions Copyrighted [year] [name of copyright owner]"
14   *
15   * The Original Software is NetBeans. The Initial Developer of the Original
16   * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
17   * Microsystems, Inc. All Rights Reserved.
18   */
19  
20  package org.netbeans.modules.web.api.webmodule;
21  
22  import java.util.ArrayList  ;
23  import java.util.Collections  ;
24  import java.util.List  ;
25  import org.openide.filesystems.FileObject;
26  import org.openide.filesystems.Repository;
27  import org.netbeans.modules.web.spi.webmodule.WebFrameworkProvider;
28  import org.openide.loaders.DataFolder;
29  import org.openide.loaders.FolderLookup;
30  import org.openide.util.Lookup;
31  
32  /**
33   *
34   * @author Petr Pisl
35   */
36  
37  /** This class contains two static methods for obtaining all registerd
38   * {@link org.netbeans.modules.web.spi.webmodule.WebFrameworkProvider}s
39   * and for obtaining all registered {@link org.netbeans.modules.web.spi.webmodule.LibraryInfoProvider}s.
40   **/
41  
42  public final class WebFrameworkSupport {
43      
44      /**
45       * This method looks for all {@link org.netbeans.modules.web.spi.webmodule.WebFrameworkProvider}s in the  j2ee/webtier/framework folder.
46       * @return List of all {@link org.netbeans.modules.web.spi.webmodule.WebFrameworkProvider}s, which are registered in the layer - j2ee/webtier/framework folder.
47       */
48      public static List  /*<WebFrameworkProvider>*/ getFrameworkProviders(){
49          FileObject f = Repository.getDefault().getDefaultFileSystem().
50                  findResource("j2ee/webtier/framework"); //NOI18N
51          if (f == null)
52              return Collections.EMPTY_LIST;
53          DataFolder folder = DataFolder.findFolder(f);
54          FolderLookup l = new FolderLookup(folder);
55          Lookup.Result result = l.getLookup().lookup(new Lookup.Template(WebFrameworkProvider.class));
56          return new ArrayList  (result.allInstances()); // since allInstances() returns a Collection
57      }
58  }
59
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