1 /*
2 * Copyright (c) 2007, James Leigh All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * - Redistributions of source code must retain the above copyright notice, this
8 * list of conditions and the following disclaimer.
9 * - Redistributions in binary form must reproduce the above copyright notice,
10 * this list of conditions and the following disclaimer in the documentation
11 * and/or other materials provided with the distribution.
12 * - Neither the name of the openrdf.org nor the names of its contributors may
13 * be used to endorse or promote products derived from this software without
14 * specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 *
28 */
29 package org.openrdf.elmo.sesame.converters.impl;
30
31 import javax.xml.datatype.DatatypeConfigurationException;
32
33 import org.openrdf.elmo.exceptions.ElmoConversionException;
34 import org.openrdf.elmo.sesame.converters.Marshall;
35 import org.openrdf.model.Literal;
36 import org.openrdf.model.URI;
37 import org.openrdf.model.ValueFactory;
38
39 public class ClassMarshall implements Marshall<Class> {
40 private static final String DATATYPE = "java:" + Class.class.getName();
41
42 private ValueFactory vf;
43
44 private ClassLoader cl;
45
46 private URI datatype;
47
48 private Marshall<Class> fallback;
49
50 public ClassMarshall(ValueFactory vf, ClassLoader cl) throws DatatypeConfigurationException {
51 this.vf = vf;
52 this.cl = cl;
53 datatype = vf.createURI(DATATYPE);
54 fallback = new ObjectSerializationMarshall(vf, Class.class);
55 }
56
57 public Class<Class> getJavaClass() {
58 return Class.class;
59 }
60
61 public URI getDatatype() {
62 return datatype;
63 }
64
65 public void setDatatype(URI datatype) {
66 this.datatype = datatype;
67 }
68
69 public Class deserialize(Literal literal) {
70 String label = literal.getLabel();
71 try {
72 return Class.forName(label, true, cl);
73 } catch (Exception e) {
74 try {
75 return fallback.deserialize(literal);
76 } catch (Exception e2) {
77 throw new ElmoConversionException(e);
78 }
79 }
80 }
81
82 public Literal serialize(Class object) {
83 String label = object.getName();
84 return vf.createLiteral(label, datatype);
85 }
86 }