Coverage report

  %line %branch
org.apache.commons.jelly.tags.core.CatchTag
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 1  
 /*
 2  
  * Copyright 2002,2004 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  
 package org.apache.commons.jelly.tags.core;
 17  
 
 18  
 import org.apache.commons.jelly.JellyTagException;
 19  
 import org.apache.commons.jelly.TagSupport;
 20  
 import org.apache.commons.jelly.XMLOutput;
 21  
 
 22  
 /**
 23  
  * A tag which catches exceptions thrown by its body.
 24  
  * This allows conditional logic to be performed based on if exceptions
 25  
  * are thrown or to do some kind of custom exception logging logic.
 26  
  *
 27  
  * @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
 28  
  * @version $Revision: 155420 $
 29  
  */
 30  
 public class CatchTag extends TagSupport {
 31  
 
 32  
     private String var;
 33  
 
 34  65
     public CatchTag() {
 35  65
     }
 36  
 
 37  
     // Tag interface
 38  
     //-------------------------------------------------------------------------
 39  
     public void doTag(XMLOutput output) throws JellyTagException {
 40  65
         if (var != null) {
 41  65
             context.removeVariable(var);
 42  
         }
 43  
         try {
 44  65
             invokeBody(output);
 45  
         }
 46  39
         catch (Throwable t) {
 47  39
             if (var != null) {
 48  39
                 context.setVariable(var, t);
 49  
             }
 50  26
         }
 51  65
     }
 52  
 
 53  
     // Properties
 54  
     //-------------------------------------------------------------------------
 55  
 
 56  
     /**
 57  
      * Sets the name of the variable which is exposed with the Exception that gets
 58  
      * thrown by evaluating the body of this tag or which is set to null if there is
 59  
      * no exception thrown.
 60  
      */
 61  
     public void setVar(String var) {
 62  65
         this.var = class="keyword">var;
 63  65
     }
 64  
 }

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