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Posted to commits@xerces.apache.org by el...@apache.org on 2003/07/30 16:04:59 UTC

cvs commit: xml-xerces/java/docs faq-xinclude.xml

elena       2003/07/30 07:04:59

  Added:       java/docs faq-xinclude.xml
  Log:
  Additional docs for Xinclude FAQ.
  
  Revision  Changes    Path
  1.1                  xml-xerces/java/docs/faq-xinclude.xml
  
  Index: faq-xinclude.xml
  ===================================================================
  <?xml version='1.0' encoding='UTF-8'?>
  <!DOCTYPE faqs SYSTEM 'dtd/faqs.dtd'>
  <faqs title='Using XInclude'>
  
    <faq title="Usage">
      <q>How do I enable XInclude processing?</q>
      <a>
       <p>
        The simplest way to enable XInclude processing is to use a 
        <code>org.apache.xerces.parsers.XIncludeParserConfiguration</code> as your
        parser configuration.  This configuration includes a DTD validator, a namespace
        binder, and a Schema validator, in addition to a handler for XInclude.  See
        <link idref="faq-xni" anchor="override-default-config">this FAQ</link> for
        instructions about how to change your parser configuration.
       </p>
       <p>
        If <code>XIncludeParserConfiguration</code> doesn't meet your needs, then you'll
        have to write your own parser configuration. Make sure that this configuration
        includes a <code>org.apache.xerces.xinclude.XIncludeHandler</code>, and that the
        property &quot;http://apache.org/xml/properties/internal/namespace-context&quot; is an instance of
        <code>org.apache.xerces.xinclude.XIncludeNamespaceSupport</code>.  It is strongly
        recommended that the <code>XIncludeHandler</code> be placed in the pipeline
        before the Schema validator, if there is one.  PSVI information cannot be
        guaranteed to be valid after XInclude processing.
       </p>
      </a>
    </faq>
  
    <faq title="xml:base attributes and XML Schema validation">
      <q>Why are <code>xml:base</code> attributes added, which make Schema validation fail?</q>
      <a>
       <p>
        According to the specification for XInclude, processors must add an <code>xml:base</code>
        attribute to elements included from locations with a different base URI.  Without
        these attributes, the resulting infoset information would be incorrect.  Unfortunatly,
        these attributes make XInclude processing not transparent to Schema validation.
       </p>
       <p>
        The solution to this is to modify your schema to allow <code>xml:base</code>
        attributes to appear on elements that might be included from different base URIs.
        If this solution is really unappealing to you, voice your concerns on the
        xerces-j-user mailing list.
       </p>
      </a>
    </faq>
  
    <faq title="Document Fragments">
      <q>Why doesn't including document fragments work?</q>
      <a>
       <p>
        Currently, our implementation of XInclude is not fully complete, and we do
        not support <jump href="http://www.w3.org/TR/xinclude/">XPointer</jump>
        references.  We hope that in the future we will have a
        fully compliant XInclude processor that can handle this feature.
       </p>
      </a>
    </faq>
  
    <faq title="XML Base Support">
      <q>Why doesn't Xerces recognize xml:base attributes?</q>
      <a> 
       <p>
        The XInclude specification requires processors to use the base URI
        (as specified in the <jump href="http://www.w3.org/TR/xmlbase/">XML Base</jump>
        recommendation) to resolve relative IURIs to compute the
        <jump href="http://www.w3.org/TR/xinclude#include-location">include location</jump>.
        Currently, our implementation of XInclude is not fully complete, and we do
        not support the XML Base recommendation.  We hope that in the future we
        will have a fully compliant XInclude processor that can handle this feature.
       </p>
      </a>
    </faq>
  </faqs>
  
  
  

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