Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
PropagateEvaluationExceptionHandler |
|
| 3.0;3 |
1 | /* | |
2 | * $Source: /usr/cvsroot/melati/melati/src/site/resources/withWebmacro/org.melati.template.webmacro.PropagateEvaluationExceptionHandler.html,v $ | |
3 | * $Revision: 1.1 $ | |
4 | * | |
5 | * Copyright (C) 2000 Tim Joyce | |
6 | * | |
7 | * Part of Melati (http://melati.org), a framework for the rapid | |
8 | * development of clean, maintainable web applications. | |
9 | * | |
10 | * Melati is free software; Permission is granted to copy, distribute | |
11 | * and/or modify this software under the terms either: | |
12 | * | |
13 | * a) the GNU General Public License as published by the Free Software | |
14 | * Foundation; either version 2 of the License, or (at your option) | |
15 | * any later version, | |
16 | * | |
17 | * or | |
18 | * | |
19 | * b) any version of the Melati Software License, as published | |
20 | * at http://melati.org | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License and | |
23 | * the Melati Software License along with this program; | |
24 | * if not, write to the Free Software Foundation, Inc., | |
25 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA to obtain the | |
26 | * GNU General Public License and visit http://melati.org to obtain the | |
27 | * Melati Software License. | |
28 | * | |
29 | * Feel free to contact the Developers of Melati (http://melati.org), | |
30 | * if you would like to work out a different arrangement than the options | |
31 | * outlined here. It is our intention to allow Melati to be used by as | |
32 | * wide an audience as possible. | |
33 | * | |
34 | * This program is distributed in the hope that it will be useful, | |
35 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
36 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
37 | * GNU General Public License for more details. | |
38 | * | |
39 | * Contact details for copyright holder: | |
40 | * | |
41 | * Tim Joyce <timj At paneris.org> | |
42 | */ | |
43 | ||
44 | package org.melati.template.webmacro; | |
45 | ||
46 | import org.webmacro.PropertyException; | |
47 | import org.webmacro.Context; | |
48 | import org.webmacro.Broker; | |
49 | import org.webmacro.engine.EvaluationExceptionHandler; | |
50 | import org.webmacro.engine.Variable; | |
51 | import org.webmacro.util.Settings; | |
52 | ||
53 | /** | |
54 | * An implementation of EvaluationExceptionHandler which throws an exception | |
55 | * whenever it is called. | |
56 | * | |
57 | * This will generally cause the exception to be | |
58 | * displayed to the user -- useful for debugging. | |
59 | * | |
60 | * Modified to allow #if ($null). | |
61 | * | |
62 | * @author Tim Joyce | |
63 | */ | |
64 | ||
65 | public class PropagateEvaluationExceptionHandler | |
66 | implements EvaluationExceptionHandler { | |
67 | ||
68 | /** | |
69 | * Constructor. | |
70 | */ | |
71 | 1939 | public PropagateEvaluationExceptionHandler() { |
72 | 1939 | } |
73 | ||
74 | /** | |
75 | * Forced upon us by the interface, but unused. | |
76 | * | |
77 | * {@inheritDoc} | |
78 | * @see org.webmacro.engine.EvaluationExceptionHandler# | |
79 | * init(org.webmacro.Broker, org.webmacro.util.Settings) | |
80 | */ | |
81 | public void init(Broker b, Settings config) { | |
82 | 0 | } |
83 | ||
84 | /** | |
85 | * {@inheritDoc} | |
86 | * @see org.webmacro.engine.EvaluationExceptionHandler# | |
87 | * evaluate(org.webmacro.engine.Variable, | |
88 | * org.webmacro.Context, java.lang.Exception) | |
89 | */ | |
90 | public void evaluate(Variable variable, | |
91 | Context context, | |
92 | Exception problem) | |
93 | throws PropertyException { | |
94 | 16 | if (problem instanceof PropertyException.NoSuchVariableException |
95 | || problem instanceof PropertyException.NullValueException | |
96 | || problem instanceof PropertyException.NullToStringException) | |
97 | 0 | return; |
98 | 16 | if (problem instanceof PropertyException) |
99 | 16 | throw (PropertyException) problem; |
100 | else | |
101 | 0 | throw new PropertyException("Error evaluating variable " |
102 | + variable.getVariableName() + ": " | |
103 | + problem, problem); | |
104 | } | |
105 | ||
106 | /** | |
107 | * {@inheritDoc} | |
108 | * @see org.webmacro.engine.EvaluationExceptionHandler#expand( | |
109 | * org.webmacro.engine.Variable, org.webmacro.Context, java.lang.Exception) | |
110 | */ | |
111 | public String expand(Variable variable, | |
112 | Context context, | |
113 | Exception problem) | |
114 | throws PropertyException { | |
115 | 16 | if (problem instanceof PropertyException) |
116 | 16 | throw (PropertyException) problem; |
117 | else | |
118 | 0 | throw new PropertyException("Error evaluating variable " |
119 | + variable.getVariableName() + ": " | |
120 | + problem, problem); | |
121 | } | |
122 | ||
123 | ||
124 | /** | |
125 | * {@inheritDoc} | |
126 | * @see org.webmacro.engine.EvaluationExceptionHandler#warningString(java.lang.String) | |
127 | */ | |
128 | public String warningString(String warningText) throws PropertyException { | |
129 | 4 | throw new PropertyException("Evaluation warning: " + warningText); |
130 | } | |
131 | ||
132 | ||
133 | /** | |
134 | * {@inheritDoc} | |
135 | * | |
136 | * I do not believe that this can be exercised, without a bug in webmacro. | |
137 | * @see org.webmacro.engine.EvaluationExceptionHandler#errorString(java.lang.String) | |
138 | */ | |
139 | public String errorString(String errorText) throws PropertyException { | |
140 | 0 | throw new PropertyException("Evaluation error: " + errorText); |
141 | } | |
142 | } | |
143 |