Coverage Report - org.melati.template.webmacro.PropagateEvaluationExceptionHandler
 
Classes in this File Line Coverage Branch Coverage Complexity
PropagateEvaluationExceptionHandler
61%
8/13
50%
5/10
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