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Java > Open Source Codes > org > netbeans > modules > web > api > webmodule > RequestParametersQuery


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.Iterator JavaDoc;
23 import org.openide.filesystems.FileObject;
24 import org.openide.util.Lookup;
25 import org.netbeans.modules.web.spi.webmodule.RequestParametersProvider;
26
27 /** This query serves for executing single file in the server.
28  * It returns request parameters for a given file.
29  *
30  * @see {@link org.netbeans.modules.web.spi.RequestParametersProvider} if you
31  * want to implement this query.
32  *
33  * @author Pavel Buzek
34  */
35 public final class RequestParametersQuery {
36
37     private static final Lookup.Result implementations =
38         Lookup.getDefault().lookup(new Lookup.Template(RequestParametersProvider.class));
39     
40     /** Return the part of URL for access the file. It can include the query string.
41      * @return path fom the context.
42      */
43     public static String JavaDoc getFileAndParameters(FileObject f) {
44         if (f == null) {
45             throw new NullPointerException JavaDoc("Passed null to RequestParametersQuery.getRequestParameters(FileObject)"); // NOI18N
46 }
47         Iterator JavaDoc it = implementations.allInstances().iterator();
48         while (it.hasNext()) {
49             RequestParametersProvider impl = (RequestParametersProvider)it.next();
50             String JavaDoc params = impl.getFileAndParameters(f);
51             if (params != null) {
52                 return params;
53             }
54         }
55         return null;
56     }
57 }
58
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