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Java > Open Source Codes > org > netbeans > modules > xml > xam > locator > CatalogModelFactory


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.xml.xam.locator;
21
22 import org.netbeans.modules.xml.xam.ModelSource;
23 import org.openide.util.Lookup;
24 import org.w3c.dom.ls.LSResourceResolver JavaDoc;
25
26 /**
27  * Returns a CatalogModel for a project
28  * @author girix
29  */
30 public abstract class CatalogModelFactory {
31     
32     /**
33      * Given a ModelSource this method will return a Locator object specific to the it.
34      * If there are initialization errors, CatalogModelException will be thrown.
35      * @param modelSource a not null model source for which catalog model is requested.
36      * @throws org.netbeans.modules.xml.xam.locator.api.CatalogModelException
37      */
38     public abstract CatalogModel getCatalogModel(ModelSource modelSource) throws CatalogModelException;
39     
40     public abstract LSResourceResolver JavaDoc getLSResourceResolver();
41     
42     private static CatalogModelFactory implObj = null;
43     
44     public static CatalogModelFactory getDefault(){
45         if(implObj == null) {
46             implObj = (CatalogModelFactory) Lookup.getDefault().lookup(CatalogModelFactory.class);
47         }
48         if (implObj == null) {
49             implObj = new Default();
50         }
51         return implObj;
52     }
53     
54     public static class Default extends CatalogModelFactory {
55         public CatalogModel getCatalogModel(ModelSource modelSource) throws CatalogModelException {
56             return (CatalogModel) modelSource.getLookup().lookup(CatalogModel.class);
57         }
58
59         public LSResourceResolver JavaDoc getLSResourceResolver() {
60             return null;
61         }
62     }
63 }
64
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