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<h1>22. Virtuoso Functions Guide - http_xslt</h1>
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<a href="fn_http_acl_get.html">http_acl_get</a>
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<div id="text">
<h2>http_xslt</h2>
<div class="refpurpose">applies an XSLT stylesheet to the output of a VSP page</div>
<div class="funcsynopsis">
<span class="funcdef">
<span class="function">http_xslt</span>
</span>
(<span class="paramdef">in <span class="parameter">xslt_uri</span> varchar</span>,
<span class="paramdefoptional">[in <span class="optional">params</span> any]</span>);
</div>
<div class="refsect1">
<div class="refsect1title">Description</div>
<p>
This function can be called inside a VSP page to apply an XSLT
stylesheet to the output of the page once the page is complete. This
function will return immediately and the stylesheet will not be
applied until the page is successfully formed. Any errors arising in
the stylesheet processing will be reported to the web client.
</p>
<p>
The stylesheet does not have to be previously defined. The URI
supplied will be used to locate the stylesheet. This can be a file,
an HTTP URL or a virt:// URI for a stylesheet stored in a local table.
Virtuoso will cache the stylesheet after first use. You can clear the
cache entry with the <span class="computeroutput">xslt_stale()</span> function.
</p>
<p>
For this to work the text generated by the VSP page should be well-formed XML.
</p>
<p>
This function is only valid in a VSP context. The
<span class="computeroutput">xsl:output</span> element will control the
Content-Type sent to the user agent.
</p>
</div>
<div class="refsect1">
<div class="refsect1title">Parameters</div>
<div class="refsect2">
<span class="refsect2title">xslt_uri – </span>Absolute URI of the XSL stylesheet</div>
<div class="refsect2">
<span class="refsect2title">params – </span>Even length array of name/value pairs.</div>
</div>
<div class="refsect1">
<div class="refsect1title">Examples</div>
<a name="ex_http_xslt" />
<div class="example">
<div class="exampletitle">Performing XSLT Transformation of VSP Output</div>
<div>
<pre class="programlisting">
<?vsp
http ('<a><b>simple XML document</b></a>');
http_xslt ('file://');
?>
</pre>
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