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org.apache.commons.jelly.tags.core.MuteTag$MuteXMLOutput |
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1 | /* |
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2 | * Copyright 2002,2004 The Apache Software Foundation. |
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3 | * |
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4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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5 | * you may not use this file except in compliance with the License. |
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6 | * You may obtain a copy of the License at |
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7 | * |
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8 | * http://www.apache.org/licenses/LICENSE-2.0 |
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9 | * |
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10 | * Unless required by applicable law or agreed to in writing, software |
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11 | * distributed under the License is distributed on an "AS IS" BASIS, |
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12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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13 | * See the License for the specific language governing permissions and |
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14 | * limitations under the License. |
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15 | */ |
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16 | package org.apache.commons.jelly.tags.core; |
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17 | ||
18 | import org.apache.commons.jelly.JellyTagException; |
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19 | import org.apache.commons.jelly.TagSupport; |
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20 | import org.apache.commons.jelly.XMLOutput; |
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21 | import org.xml.sax.helpers.DefaultHandler; |
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22 | ||
23 | ||
24 | /** A tag which executes its body but passing no output. |
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25 | * <p> |
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26 | * Using this tag will still take the time to perform toString on each object |
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27 | * returned to the output (but this toString value is discarded. |
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28 | * A future version should go more internally so that this is avoided. |
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29 | * |
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30 | * @author <a href="mailto:paul@activemath.org">Paul Libbrecht</a> |
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31 | * @version $Revision: 155420 $ |
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32 | */ |
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33 | public class MuteTag extends TagSupport { |
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34 | ||
35 | /** |
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36 | * Create an instance |
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37 | */ |
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38 | public MuteTag() { |
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39 | } |
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40 | ||
41 | /** |
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42 | * Invoke the body and produce no output. |
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43 | * @param output tag output, which is ignored. |
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44 | */ |
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45 | public void doTag(XMLOutput output) throws JellyTagException { |
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46 | super.invokeBody(new MuteXMLOutput()); |
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47 | } |
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48 | ||
49 | /** |
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50 | * An XMLOutput which really outputs nothing, in particular, avoids calling |
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51 | * toString() in objects returned... |
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52 | */ |
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53 | static class MuteXMLOutput extends XMLOutput { |
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54 | public MuteXMLOutput() { |
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55 | 26 | super(new DefaultHandler()); |
56 | 26 | } |
57 | ||
58 | /** |
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59 | * Do nothing, not even invoke the toString! |
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60 | */ |
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61 | public void objectData(Object o) { |
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62 | 13 | } |
63 | } // class MuteXMLOutput |
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64 | } // class TagSupport |
This report is generated by jcoverage, Maven and Maven JCoverage Plugin. |