Coverage report

  %line %branch
org.apache.commons.jelly.tags.core.MuteTag$MuteXMLOutput
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 1  
 /*
 2  
  * Copyright 2002,2004 The Apache Software Foundation.
 3  
  *
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  * 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  
 import org.xml.sax.helpers.DefaultHandler;
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 23  
 
 24  
 /** A tag which executes its body but passing no output.
 25  
  *  <p>
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  * Using this tag will still take the time to perform toString on each object
 27  
  * returned to the output (but this toString value is discarded.
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  * A future version should go more internally so that this is avoided.
 29  
  *
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  * @author <a href="mailto:paul@activemath.org">Paul Libbrecht</a>
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  * @version $Revision: 155420 $
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   */
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 public class MuteTag extends TagSupport {
 34  
 
 35  
     /**
 36  
      * Create an instance
 37  
      */
 38  
     public MuteTag() {
 39  
     }
 40  
 
 41  
     /**
 42  
      * Invoke the body and produce no output.
 43  
      * @param output tag output, which is ignored.
 44  
      */
 45  
     public void doTag(XMLOutput output) throws JellyTagException {
 46  
         super.invokeBody(new MuteXMLOutput());
 47  
     }
 48  
 
 49  
     /**
 50  
      * An XMLOutput which really outputs nothing, in particular, avoids calling
 51  
      * toString() in objects returned...
 52  
      */
 53  
     static class MuteXMLOutput extends XMLOutput {
 54  
         public MuteXMLOutput() {
 55  26
             super(new DefaultHandler());
 56  26
         }
 57  
        
 58  
         /**
 59  
          * Do nothing, not even invoke the toString!
 60  
          */
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         public void objectData(Object o) {
 62  13
         }
 63  
     } // class MuteXMLOutput
 64  
 } // class TagSupport

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