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<h1>22. Virtuoso Functions Guide - xml_template</h1>
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<h2>xml_template</h2>
<div class="refpurpose">Execute XML template from Virtuoso PL</div>
<div class="funcsynopsis">
<span class="funcdef">
<span class="function">xml_template</span>
</span>
(<span class="paramdef">in <span class="parameter">xml_document_entity</span> any</span>,
<span class="paramdef">in <span class="parameter">parameters</span> vector</span>,
<span class="paramdefoptional">[inout <span class="optional">session</span> string_session]</span>);
</div>
<div class="refsect1">
<div class="refsect1title">Description</div>
<p>The <span class="computeroutput">xml_template()</span> function was introduced to
enable PL programming to make use of XML templates.
This function expects an XML entity for the first argument, that will be
the XML template file contents. Usually this entity is composed making
use of the <span class="computeroutput">xtree_doc()</span> function from the XML
template file.</p>
<p>The second argument should be a vector of name-value pairs of the
parameters for XML template.</p>
<p>The last argument is an output string stream for the result. If the
output stream is not specified the HTTP internal stream will be used
if it is available, otherwise an error will be signalled.</p>
</div>
<div class="refsect1">
<div class="refsect1title">Parameters</div>
<div class="refsect2">
<span class="refsect2title">xml_document_entity – </span>
XML entity such as that returned by <span class="computeroutput">xtree_doc()</span>
</div>
<div class="refsect2">
<span class="refsect2title">parameters – </span>
Vector or name-value pairs: vector('name1', 'value1', 'name2', 'value2', ...).</div>
<div class="refsect2">
<span class="refsect2title">session – </span>
Output stream for handling the results of XML template. If this
parameter is unspecified then the HTTP internal stream will be assumed,
which if not applicable will signal an error.</div>
</div>
<div class="refsect1">
<div class="refsect1title">Return Types</div>
<p>A URL of the XSLT stylesheet for further transformation will be
returned. If xsl attribute was not specified in the XML template then the
return value will be NULL.</p>
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