1 package org.csc.phynixx.common.cast;
2
3 /*
4 * #%L
5 * phynixx-common
6 * %%
7 * Copyright (C) 2014 Christoph Schmidt-Casdorff
8 * %%
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
12 *
13 * http://www.apache.org/licenses/LICENSE-2.0
14 *
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
20 * #L%
21 */
22
23
24 /**
25 * Implementierung des von {@link IImplementor} fuer eine Delegatinon.
26 *
27 * @param <O>
28 * @author Christoph Schmidt-Casdorff
29 */
30 public class ObjectImplementor<O> implements IImplementor {
31
32 private final O bean;
33
34 public ObjectImplementor(final O bean) {
35 if (bean == null) {
36 throw new IllegalArgumentException("Bean muss definiert sein");
37 }
38 this.bean = bean;
39 }
40
41 public O getBean() {
42 return this.bean;
43 }
44
45 /**
46 * prueft, ob uebergebene Klasse <code>assignable</code> von aktueller
47 * Klasse ist.
48 */
49 public <X> X cast(final Class<X> cls) {
50 if (cls == null) {
51 throw new IllegalArgumentException("Parameter 'cls' muss angegeben werden");
52 }
53
54 final Class<?> beanClass = bean.getClass();
55 if (cls.isAssignableFrom(beanClass)) {
56 return cls.cast(bean);
57 }
58 throw new ClassCastException("Klasse " + beanClass + " kann nicht nach " + cls + " gewandelt werden");
59 }
60
61 public <X> boolean isImplementationOf(final Class<X> cls) {
62 if (cls == null) {
63 throw new IllegalArgumentException("Parameter 'cls' muss angegeben werden");
64 }
65 final Class<?> beanClass = bean.getClass();
66 return cls.isAssignableFrom(beanClass);
67
68 }
69
70 }