1 package org.codehaus.plexus.interpolation;
2
3 /*
4 * Copyright 2001-2008 Codehaus Foundation.
5 *
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19 import java.util.List;
20
21 public abstract class AbstractDelegatingValueSource implements ValueSource {
22
23 private final ValueSource delegate;
24
25 protected AbstractDelegatingValueSource(ValueSource delegate) {
26 if (delegate == null) {
27 throw new NullPointerException("Delegate ValueSource cannot be null.");
28 }
29
30 this.delegate = delegate;
31 }
32
33 protected ValueSource getDelegate() {
34 return delegate;
35 }
36
37 public Object getValue(String expression) {
38 return getDelegate().getValue(expression);
39 }
40
41 public void clearFeedback() {
42 delegate.clearFeedback();
43 }
44
45 public List getFeedback() {
46 return delegate.getFeedback();
47 }
48 }