1 package org.codehaus.plexus.interpolation;
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.util.List;
23
24 /**
25 * Wraps an arbitrary object with an {@link ObjectBasedValueSource} instance, then
26 * wraps that source with a {@link PrefixedValueSourceWrapper} instance, to which
27 * this class delegates all of its calls.
28 *
29 */
30 public class PrefixedObjectValueSource extends AbstractDelegatingValueSource implements QueryEnabledValueSource {
31
32 /**
33 * Wrap the specified root object, allowing the specified expression prefix.
34 * @param prefix the prefix.
35 * @param root the root of the graph.
36 */
37 public PrefixedObjectValueSource(String prefix, Object root) {
38 super(new PrefixedValueSourceWrapper(new ObjectBasedValueSource(root), prefix));
39 }
40
41 /**
42 * Wrap the specified root object, allowing the specified list of expression
43 * prefixes and setting whether the {@link PrefixedValueSourceWrapper} allows
44 * unprefixed expressions.
45 * @param possiblePrefixes The possible prefixes.
46 * @param root The root of the graph.
47 * @param allowUnprefixedExpressions if we allow undefined expressions or not.
48 */
49 public PrefixedObjectValueSource(List<String> possiblePrefixes, Object root, boolean allowUnprefixedExpressions) {
50 super(new PrefixedValueSourceWrapper(
51 new ObjectBasedValueSource(root), possiblePrefixes, allowUnprefixedExpressions));
52 }
53
54 /**
55 * {@inheritDoc}
56 */
57 public String getLastExpression() {
58 return ((QueryEnabledValueSource) getDelegate()).getLastExpression();
59 }
60 }