1 /*
2 * Copyright 2011-2012 smartics, Kronseder & Reiner GmbH
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 de.smartics.util.adapt;
17
18 /**
19 * Implemented by a class to support different adapters to its instances.
20 */
21 public interface Adaptable
22 {
23 // ********************************* Fields *********************************
24
25 // --- constants ------------------------------------------------------------
26
27 // ****************************** Initializer *******************************
28
29 // ****************************** Inner Classes *****************************
30
31 // ********************************* Methods ********************************
32
33 // --- get&set --------------------------------------------------------------
34
35 // --- business -------------------------------------------------------------
36
37 /**
38 * Returns the adapter of the requested type.
39 *
40 * @param type the type of the requested adapter.
41 * @return the adapter instance of the requested type
42 * @throws AdaptableException if this instance does not provide an adapter of
43 * the requested type.
44 * @param <T> the type of the requested adapter.
45 */
46 <T> T as(Class<? extends T> type) throws AdaptableException;
47
48 /**
49 * Checks if the instance provides an adapter for the desired type.
50 *
51 * @param type the type of the requested adapter.
52 * @return <code>true</code> if the instance provides the requested adapter,
53 * <code>false</code> otherwise.
54 */
55 boolean isAdaptable(Class<?> type);
56
57 // --- object basics --------------------------------------------------------
58
59 }