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Java > Open Source Codes > com > hp > hpl > jena > rdf > model > impl > ModelSpecCreatorByClassname


1 /*
2     (c) Copyright 2005 Hewlett-Packard Development Company, LP
3     All rights reserved.
4     [See end of file]
5 */
6
7 package com.hp.hpl.jena.rdf.model.impl;
8
9 import java.lang.reflect.Constructor JavaDoc;
10
11 import com.hp.hpl.jena.rdf.model.*;
12 import com.hp.hpl.jena.shared.JenaException;
13
14 /**
15     A ModelSpecCreator that creates ModelSpecs that have the given
16     classname - used when building ModelSpecCreatorRegistrys from
17     RDF descriptions.
18     
19     @author kers
20 */
21 public class ModelSpecCreatorByClassname implements ModelSpecCreator
22     {
23     protected static final Class JavaDoc[] constructorArguments = new Class JavaDoc[] { Resource.class, Model.class };
24     
25     Constructor JavaDoc c;
26     String JavaDoc className;
27     
28     public ModelSpecCreatorByClassname( String JavaDoc className )
29         { this.className = className; }
30     
31     public ModelSpec create( Resource root, Model desc )
32         {
33         try
34             { Object JavaDoc [] arguments = new Object JavaDoc[] { root, desc };
35             if (c == null) c = Class.forName( className ).getDeclaredConstructor( constructorArguments );
36             return (ModelSpec) c.newInstance( arguments ); }
37         catch (Exception JavaDoc e)
38             { throw new JenaException( e ); }
39         }
40     }
41
42 /*
43  * (c) Copyright 2005 Hewlett-Packard Development Company, LP
44  * All rights reserved.
45  *
46  * Redistribution and use in source and binary forms, with or without
47  * modification, are permitted provided that the following conditions
48  * are met:
49  * 1. Redistributions of source code must retain the above copyright
50  * notice, this list of conditions and the following disclaimer.
51  * 2. Redistributions in binary form must reproduce the above copyright
52  * notice, this list of conditions and the following disclaimer in the
53  * documentation and/or other materials provided with the distribution.
54  * 3. The name of the author may not be used to endorse or promote products
55  * derived from this software without specific prior written permission.
56  *
57  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
58  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
59  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
60  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
61  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
62  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
63  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
64  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
65  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
66  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
67 */
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