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 <Y>
28 * @author Christoph Schmidt-Casdorff
29 */
30 public class ImplementorWrapper<Y extends IImplementor> implements IImplementor {
31
32 private Y editable = null;
33
34 protected ImplementorWrapper(final Y editable) {
35 super();
36 this.editable = editable;
37 }
38
39 protected Y getWrapped() {
40 return this.editable;
41 }
42
43 /**
44 * prueft, ob uebergebene Klasse <code>assignable</code> von aktueller
45 * Klasse ist.
46 */
47 public <X> X cast(final Class<X> iface) {
48 if (iface == null) {
49 throw new IllegalArgumentException("Parameter 'cls' muss angegeben werden");
50 }
51
52 final Class<?> clazz = this.getClass();
53 if (iface.isAssignableFrom(clazz)) {
54 return iface.cast(this);
55 } else {
56 if (this.editable == null) {
57 throw new IllegalStateException("Delegate ist nicht definiert");
58 }
59 return this.editable.cast(iface);
60 }
61 }
62
63 public <X> boolean isImplementationOf(final Class<X> cls) {
64 if (cls == null) {
65 throw new IllegalArgumentException(
66 "Parameter 'cls' muss angegeben werden");
67 }
68 if (cls.isAssignableFrom(this.getClass())) {
69 return true;
70 } else {
71 if (this.editable == null) {
72 throw new IllegalStateException("Delegate ist nicht definiert");
73 }
74 return this.editable.isImplementationOf(cls);
75 }
76 }
77
78 }