Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
WebRuleSet |
|
| 2.0;2 |
1 | /* | |
2 | * Copyright 1999-2001,2004 The Apache Software Foundation. | |
3 | * | |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
15 | */ | |
16 | ||
17 | ||
18 | package org.apache.commons.workflow.web; | |
19 | ||
20 | ||
21 | import org.apache.commons.digester.Digester; | |
22 | import org.apache.commons.workflow.base.BaseRuleSet; | |
23 | ||
24 | ||
25 | /** | |
26 | * <p><strong>RuleSet</strong> for the Step definitions supported by the | |
27 | * <em>web</em> library. This library is normally associated with the | |
28 | * following namespace URI:</p> | |
29 | * <pre> | |
30 | * http://commons.apache.org/workflow/web | |
31 | * </pre> | |
32 | * | |
33 | * @author Craig R. McClanahan | |
34 | * @version $Revision: 561366 $ $Date: 2007-07-31 16:58:29 +0100 (Tue, 31 Jul 2007) $ | |
35 | */ | |
36 | ||
37 | public class WebRuleSet extends BaseRuleSet { | |
38 | ||
39 | ||
40 | // ------------------------------------------------------------ Constructor | |
41 | ||
42 | ||
43 | /** | |
44 | * Construct a default instance of the <code>RuleSet</code>. | |
45 | */ | |
46 | public WebRuleSet() { | |
47 | ||
48 | 0 | super(); |
49 | 0 | setNamespaceURI("http://commons.apache.org/workflow/web"); |
50 | ||
51 | 0 | } |
52 | ||
53 | ||
54 | // --------------------------------------------------------- Public Methods | |
55 | ||
56 | ||
57 | /** | |
58 | * <p>Add the set of Rule instances defined in this RuleSet to the | |
59 | * specified <code>Digester</code> instance, associating them with | |
60 | * our namespace URI (if any). This method should only be called | |
61 | * by a Digester instance.</p> | |
62 | * | |
63 | * @param digester Digester instance to which the new Rule instances | |
64 | * should be added. | |
65 | */ | |
66 | public void addRuleInstances(Digester digester) { | |
67 | ||
68 | // Add rules for each Step defined in this package | |
69 | 0 | addStandardStep(digester, "forward", |
70 | "org.apache.commons.workflow.web.ForwardStep"); | |
71 | 0 | addStandardStep(digester, "goto", |
72 | "org.apache.commons.workflow.web.GotoStep"); | |
73 | 0 | if (isServlet23()) { |
74 | 0 | addStandardStep(digester, "include", |
75 | "org.apache.commons.workflow.web.IncludeStep23"); | |
76 | } | |
77 | 0 | addStandardStep(digester, "populate", |
78 | "org.apache.commons.workflow.web.PopulateStep"); | |
79 | ||
80 | // Add rules for all variations on descriptors being matched | |
81 | 0 | addStandardDescriptor(digester, "descriptor"); // Standard version |
82 | ||
83 | 0 | } |
84 | ||
85 | ||
86 | // ------------------------------------------------------ Protected Methods | |
87 | ||
88 | ||
89 | /** | |
90 | * Are we executing in a Servlet 2.3 (or later) environment? | |
91 | */ | |
92 | protected boolean isServlet23() { | |
93 | ||
94 | try { | |
95 | 0 | Class.forName("javax.servlet.Filter"); // 2.3-or-later class |
96 | 0 | return (true); |
97 | 0 | } catch (ClassNotFoundException e) { |
98 | 0 | return (false); |
99 | } | |
100 | ||
101 | } | |
102 | ||
103 | ||
104 | } |