1 package org.codehaus.plexus.interpolation.fixed;
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 public abstract class AbstractDelegatingValueSource implements FixedValueSource {
20
21 private final FixedValueSource delegate;
22
23 protected AbstractDelegatingValueSource(FixedValueSource delegate) {
24 if (delegate == null) {
25 throw new NullPointerException("Delegate ValueSource cannot be null.");
26 }
27
28 this.delegate = delegate;
29 }
30
31 protected FixedValueSource getDelegate() {
32 return delegate;
33 }
34
35 public Object getValue(String expression, InterpolationState interpolationState) {
36 return getDelegate().getValue(expression, interpolationState);
37 }
38 }