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 java.lang.reflect.Constructor;
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 ObjectConstructorMarshall<T> implements Marshall<T> {
40
41 private ValueFactory vf;
42
43 private Constructor<T> constructor;
44
45 private URI datatype;
46
47 public ObjectConstructorMarshall(ValueFactory vf, Class<T> type)
48 throws NoSuchMethodException {
49 this.vf = vf;
50 this.datatype = vf.createURI("java:", type.getName());
51 try {
52 constructor = type.getConstructor(new Class[] { String.class });
53 } catch (NoSuchMethodException e) {
54 try {
55 constructor = type
56 .getConstructor(new Class[] { CharSequence.class });
57 } catch (NoSuchMethodException e1) {
58 throw e;
59 }
60 }
61 }
62
63 public Class<T> getJavaClass() {
64 return constructor.getDeclaringClass();
65 }
66
67 public URI getDatatype() {
68 return datatype;
69 }
70
71 public void setDatatype(URI datatype) {
72 this.datatype = datatype;
73 }
74
75 public T deserialize(Literal literal) {
76 try {
77 return constructor.newInstance(new Object[] { literal.getLabel() });
78 } catch (Exception e) {
79 throw new ElmoConversionException(e);
80 }
81 }
82
83 public Literal serialize(T object) {
84 return vf.createLiteral(object.toString(), datatype);
85 }
86
87 }