1 package org.apache.commons.beanutils2.transformers;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 import java.lang.reflect.ParameterizedType;
23 import java.lang.reflect.Type;
24
25 import org.apache.commons.beanutils2.Transformer;
26
27 public abstract class AbstractTransformer<S, T>
28 implements Transformer<S, T>
29 {
30
31 private final Type sourceType;
32
33 private final Type targetType;
34
35 public AbstractTransformer()
36 {
37 Type superclass = getClass().getGenericSuperclass();
38 if ( superclass instanceof Class )
39 {
40 throw new RuntimeException( "Missing type parameter." );
41 }
42 ParameterizedType parameterizedType = (ParameterizedType) superclass;
43 sourceType = parameterizedType.getActualTypeArguments()[0];
44 targetType = parameterizedType.getActualTypeArguments()[1];
45 }
46
47 public final Type getSourceType()
48 {
49 return sourceType;
50 }
51
52 public final Type getTargetType()
53 {
54 return targetType;
55 }
56
57 }