##### Coverage Report - org.melati.template.webmacro.PassbackEvaluationExceptionHandler

Classes in this File | Line Coverage | Branch Coverage | Complexity
PassbackEvaluationExceptionHandler |
76% | 13/17
50% | 7/14
| 3.4;3.4

1 |  |
     /*
2 |  |
      * $Source: /usr/cvsroot/melati/melati/src/site/resources/withWebmacro/org.melati.template.webmacro.PassbackEvaluationExceptionHandler.html,v $
3 |  |
      * $Revision: 1.1 $
4 |  |
      *
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      * Copyright (C) 2000 Tim Joyce
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      *
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      * Part of Melati (http://melati.org), a framework for the rapid
8 |  |
      * development of clean, maintainable web applications.
9 |  |
      *
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      * Melati is free software; Permission is granted to copy, distribute
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      * 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 |  |
      *
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      *    or
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      *
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      * b) any version of the Melati Software License, as published
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      *    at http://melati.org
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      *
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      * You should have received a copy of the GNU General Public License and
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      * the Melati Software License along with this program;
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      * if not, write to the Free Software Foundation, Inc.,
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      * 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.
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      *
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      * Feel free to contact the Developers of Melati (http://melati.org),
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      * if you would like to work out a different arrangement than the options
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      * outlined here.  It is our intention to allow Melati to be used by as
32 |  |
      * wide an audience as possible.
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      *
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      * This program is distributed in the hope that it will be useful,
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      * but WITHOUT ANY WARRANTY; without even the implied warranty of
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      * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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      * GNU General Public License for more details.
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      *
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      * Contact details for copyright holder:
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      *
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      *     Tim Joyce <timj At paneris.org>
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      */
43 |  |
44 |  |
     package org.melati.template.webmacro;
45 |  |
46 |  |
     import org.melati.template.MarkupLanguage;
47 |  |
48 |  |
     import org.webmacro.PropertyException;
49 |  |
     import org.webmacro.Context;
50 |  |
     import org.webmacro.Broker;
51 |  |
     import org.webmacro.engine.EvaluationExceptionHandler;
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     import org.webmacro.engine.Variable;
53 |  |
     import org.webmacro.util.Settings;
54 |  |
55 |  |
     /**
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      * An implementation of EvaluationExceptionHandler which attempts to use a
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      * templet to render the exception.
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      */
59 | 884 |
     public class PassbackEvaluationExceptionHandler
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       implements EvaluationExceptionHandler {
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62 |  |
       /**
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        * {@inheritDoc}
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        * @see org.webmacro.engine.EvaluationExceptionHandler#
65 |  |
        *      init(org.webmacro.Broker, org.webmacro.util.Settings)
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        */
67 | 0 |
       public void init(Broker b, Settings config) {}
68 |  |
69 |  |
       /**
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        * {@inheritDoc}
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        * @see org.webmacro.engine.EvaluationExceptionHandler#
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        * evaluate(org.webmacro.engine.Variable, org.webmacro.Context, java.lang.Exception)
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        */
74 |  |
       public void evaluate(Variable variable,
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                             Context context,
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                             Exception problem)
77 |  |
        throws PropertyException {
78 | 6 |
          if (problem instanceof PropertyException.NoSuchVariableException
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           || problem instanceof PropertyException.NullValueException
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           || problem instanceof PropertyException.NullToStringException)
81 | 0 |
            return;
82 | 6 |
          throw new PropertyException("Failed to evaluate " +
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          variable.getVariableName() + ": " + problem,problem);
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        }
85 |  |
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       /**
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        * {@inheritDoc}
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        * @see org.webmacro.engine.EvaluationExceptionHandler#
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        * expand(org.webmacro.engine.Variable,
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        *        org.webmacro.Context, java.lang.Exception)
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        */
92 |  |
       public String expand(Variable variable,
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                             Context context,
94 |  |
                             Exception problem)
95 |  |
        throws PropertyException {
96 | 6 |
          MarkupLanguage ml = (MarkupLanguage)context.get("ml");
97 | 6 |
          if (ml == null) throw new PropertyException(
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            "Error, to use the Passback Evaluation Exception Handler, you must " +
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            "place your MarkupLanguage in the context as $ml" +
100 |  |
            variable.getVariableName() + ": " + problem, problem);
101 | 6 |
          Throwable underlying = problem;
102 | 6 |
          if (problem instanceof PropertyException) {
103 | 6 |
            PropertyException prob = (PropertyException)problem;
104 | 6 |
            if (prob.getCause() != null) {
105 | 6 |
              if (prob.getCause()  instanceof PropertyException)
106 | 6 |
                prob = (PropertyException)prob.getCause();
107 | 6 |
              underlying = prob.getCause();
108 |  |
            }
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          }
110 | 6 |
          return ml.rendered(underlying);
111 |  |
        }
112 |  |
113 |  |
        /**
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        * {@inheritDoc}
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        * @see org.webmacro.engine.EvaluationExceptionHandler#warningString(java.lang.String)
116 |  |
        */
117 |  |
       public String warningString(String warningText) throws PropertyException {
118 | 0 |
           throw new PropertyException("Evaluation warning: " + warningText);
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        }
120 |  |
121 |  |
        /**
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        * {@inheritDoc}
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        * @see org.webmacro.engine.EvaluationExceptionHandler#errorString(java.lang.String)
124 |  |
        */
125 |  |
       public String errorString(String errorText) throws PropertyException {
126 | 0 |
           throw new PropertyException("Evaluation error: " + errorText);
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        }
128 |  |
     }
129 |  |