1 /*
2 * $Id: WildcardDefinitionPatternMatcher.java 795343 2009-07-18 11:26:09Z apetrelli $
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 package org.apache.tiles.definition.pattern.wildcard;
23
24 import java.util.List;
25
26 import org.apache.tiles.Definition;
27 import org.apache.tiles.definition.pattern.DefinitionPatternMatcher;
28 import org.apache.tiles.definition.pattern.PatternUtil;
29 import org.apache.tiles.util.WildcardHelper;
30
31 /**
32 * Matches wildcard patterns in definitions.
33 *
34 * @version $Rev: 795343 $ $Date: 2009-07-18 21:26:09 +1000 (Sat, 18 Jul 2009) $
35 * @since 2.2.0
36 */
37 public class WildcardDefinitionPatternMatcher implements
38 DefinitionPatternMatcher {
39
40 /**
41 * Allows to parse wildcard expressions and to recognize substitution
42 * variables.
43 */
44 private WildcardHelper wildcardHelper;
45
46 /**
47 * The definition to use as a basis.
48 */
49 private Definition definition;
50
51 /**
52 * The pattern to use.
53 */
54 private int[] pattern;
55
56 /**
57 * Constructor.
58 *
59 * @param pattern The pattern to use, in string form.
60 * @param definition The definition to use as a basis.
61 * @param wildcardHelper The object that parses wildcard expressions and
62 * recognized substitution variables.
63 * @since 2.2.0
64 */
65 public WildcardDefinitionPatternMatcher(String pattern,
66 Definition definition, WildcardHelper wildcardHelper) {
67 this.wildcardHelper = wildcardHelper;
68 this.definition = definition;
69 this.pattern = wildcardHelper.compilePattern(pattern);
70 }
71
72 /** {@inheritDoc} */
73 public Definition createDefinition(String definitionName) {
74 List<String> vars = wildcardHelper.match(definitionName, pattern);
75 Definition d = null;
76
77 if (vars != null) {
78 d = PatternUtil.replacePlaceholders(definition, definitionName,
79 vars.toArray());
80 }
81
82 return d;
83 }
84 }