1 /*
2 * Copyright 2010, 2011 Chris Pheby
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.jadira.bindings.core.general.binding;
17
18 import org.jadira.bindings.core.api.Binding;
19 import org.jadira.bindings.core.api.FromUnmarshaller;
20
21 /**
22 * Binding that supports a from contract but not to
23 * @param <S> Source type for the conversion
24 * @param <T> Target type
25 */
26 public class FromBinding<S, T> implements Binding<S, T> {
27
28 private final FromUnmarshaller<S, T> unmarshal;
29
30 /**
31 * Create a new instance of a {@link Binding} wrapping the given {@link FromUnmarshaller} instance
32 * @param unmarshal The FromUnmarshaller to wrap
33 */
34 public FromBinding(FromUnmarshaller<S, T> unmarshal) {
35
36 if (unmarshal == null) {
37 throw new IllegalStateException("Unmarshaller may not be null");
38 }
39
40 this.unmarshal = unmarshal;
41 }
42
43 /**
44 * {@inheritDoc}
45 */
46 /* @Override */
47 public T marshal(S object) throws UnsupportedOperationException {
48 throw new UnsupportedOperationException("FromBinding does not support marshalling");
49 }
50
51 /**
52 * {@inheritDoc}
53 */
54 /* @Override */
55 public S unmarshal(T inputString) {
56 return unmarshal.unmarshal(inputString);
57 }
58
59 /**
60 * {@inheritDoc}
61 */
62 /* @Override */
63 public Class<S> getBoundClass() {
64 return unmarshal.getBoundClass();
65 }
66
67 /**
68 * {@inheritDoc}
69 */
70 /* @Override */
71 public Class<T> getTargetClass() {
72 return unmarshal.getTargetClass();
73 }
74 }