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Java > Open Source Codes > org > openide > filesystems > MIMEResolver


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 package org.openide.filesystems;
20
21 import java.util.*;
22
23
24 /**
25  * This class is intended as superclass for individual resolvers.
26  * All registered subclasses of MIMEResolver are looked up and asked one by one
27  * to resolve MIME type of passed FileObject. Resolving is finished right after
28  * a resolver is able to resolve the FileObject or if all registered
29  * resolvers returned null (not recognized).
30  * <p>
31  * Resolvers are registered if they have their record in the Lookup area.
32  * E.g. in form : org-some-package-JavaResolver.instance file.
33  *
34  * @author rmatous
35  */
36 public abstract class MIMEResolver {
37     /**
38      * Resolves FileObject and returns recognized MIME type
39      * @param fo is FileObject which should be resolved (This FileObject is not
40      * thread safe. Also this FileObject should not be cached for later use)
41      * @return recognized MIME type or null if not recognized
42      */
43     public abstract String JavaDoc findMIMEType(FileObject fo);
44 }
45
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