1 <HTML><HEAD> |
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2 <!-- $Id: package.html,v 1.3 2007/10/02 19:32:24 ndw Exp $ --> |
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3 </HEAD><BODY> |
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4 |
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5 <p> |
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6 This package contains interfaces to SAX2 facilities that |
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7 conformant SAX drivers won't necessarily support. |
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8 |
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9 <p>See <a target='_top' href='http://www.saxproject.org'>http://www.saxproject.org</a> |
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10 for more information about SAX.</p> |
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11 |
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12 <p> This package is independent of the SAX2 core, though the functionality |
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13 exposed generally needs to be implemented within a parser core. |
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14 That independence has several consequences:</p> |
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15 |
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16 <ul> |
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17 |
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18 <li>SAX2 drivers are <em>not</em> required to recognize these handlers. |
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19 </li> |
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20 |
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21 <li>You cannot assume that the class files will be present in every SAX2 |
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22 installation.</li> |
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23 |
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24 <li>This package may be updated independently of SAX2 (i.e. new |
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25 handlers and classes may be added without updating SAX2 itself).</li> |
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26 |
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27 <li>The new handlers are not implemented by the SAX2 |
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28 <code>org.xml.sax.helpers.DefaultHandler</code> or |
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29 <code>org.xml.sax.helpers.XMLFilterImpl</code> classes. |
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30 You can subclass these if you need such behavior, or |
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31 use the helper classes found here.</li> |
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32 |
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33 <li>The handlers need to be registered differently than core SAX2 |
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34 handlers.</li> |
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35 |
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36 </ul> |
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37 |
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38 <p>This package, SAX2-ext, is a standardized extension to SAX2. It is |
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39 designed both to allow SAX parsers to pass certain types of information |
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40 to applications, and to serve as a simple model for other SAX2 parser |
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41 extension packages. Not all such extension packages should need to |
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42 be recognized directly by parsers, however. |
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43 As an example, most validation systems can be cleanly layered on top |
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44 of parsers supporting the standardized SAX2 interfaces. </p> |
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45 |
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46 </BODY></HTML> |
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