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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<h1 align=center>QXmlEntityResolver Class Reference<br><small>[ <a href="xml.html">XML module</a> ]</small></h1><br clear="all">
<p>
The QXmlEntityResolver class provides an interface to resolve extern entities contained in XML data.
<a href="#details">More...</a>
<p>
<code>#include <<a href="qxml-h.html">qxml.h</a>></code>
<p>Inherited by <a href="qxmldefaulthandler.html">QXmlDefaultHandler</a>.
<p><a href="qxmlentityresolver-members.html">List of all member functions.</a>
<h2>Public Members</h2>
<ul>
<li><div class="fn">virtualbool<a href="#4743ba"><b>resolveEntity</b></a>(constQString&publicId, constQString&systemId, QXmlInputSource*ret)</div>
<li><div class="fn">virtualQString<a href="#66137d"><b>errorString</b></a>()</div>
</ul>
<hr><h2><a name="details"></a>Detailed Description</h2>
The QXmlEntityResolver class provides an interface to resolve extern entities contained in XML data.
<p>
If an application needs to implement customized handling for external
entities, it must implement this interface and register it with
<a href="qxmlreader.html#4a0cf6">QXmlReader::setEntityResolver</a>().
<p>See also the <a href="xml.html#introSAX2">Introduction to SAX2</a>.
<p>See also <a href="qxmldtdhandler.html">QXmlDTDHandler</a>, <a href="qxmldeclhandler.html">QXmlDeclHandler</a>, <a href="qxmlcontenthandler.html">QXmlContentHandler</a>, <a href="qxmlerrorhandler.html">QXmlErrorHandler</a> and <a href="qxmllexicalhandler.html">QXmlLexicalHandler</a>.
<hr><h2>Member Function Documentation</h2>
<h3 class="fn"><a href="qstring.html">QString</a><a name="66137d"></a>QXmlEntityResolver::errorString() <code>[virtual]</code></h3>
<p>The reader calls this function to get an error string if any of the handler
functions returns FALSE to him.
<h3 class="fn">bool<a name="4743ba"></a>QXmlEntityResolver::resolveEntity(const<a href="qstring.html">QString</a>&publicId, const<a href="qstring.html">QString</a>&systemId, <a href="qxmlinputsource.html">QXmlInputSource</a>*ret) <code>[virtual]</code></h3>
<p>The reader will call this function before he opens any external entity,
except the top-level document entity. The application may request the reader
to resolve the entity itself (<em>ret</em> is 0) or to use an entirely different
input source (<em>ret</em> points to the input source).
<p>The reader will delete the input source <em>ret</em> when he no longer needs it. So
you should allocate it on the heap with <code>new.</code>
<p>The argument <em>publicId</em> is the public identifier of the external entity, <em>systemId</em> is the system identifier of the external entity and <em>ret</em> is the
return value of this function: if it is 0 the reader should resolve the
entity itself, if it is non-zero it must point to an input source which the
reader will use instead.
<p>If this function returns FALSE the reader will stop parsing and will report
an error. The reader will use the function <a href="#66137d">errorString</a>() to get the error
message that will be used for reporting the error.
<p>Reimplemented in <a href="qxmldefaulthandler.html#a70506">QXmlDefaultHandler</a>.
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