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<h1>22. Virtuoso Functions Guide - BPEL.BPEL.getVariableData</h1>
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<h2>BPEL.BPEL.getVariableData</h2>
<div class="refpurpose">gets BPEL variable data within <bpelv:exec binding="SQL"> activity</div>
<div class="funcsynopsis">
<span class="funcdef">
<span class="function">BPEL.BPEL.getVariableData</span>
</span>
(<span class="paramdef">in <span class="parameter">var_name</span> varchar</span>,
<span class="paramdef">in <span class="parameter">part</span> varchar</span>,
<span class="paramdef">in <span class="parameter">query</span> varchar</span>);
</div>
<div class="refsect1">
<div class="refsect1title">Parameters</div>
<div class="refsect2">
<span class="refsect2title">var_name – </span>
<span class="computeroutput">varchar</span> the name of BPEL variable
</div>
<div class="refsect2">
<span class="refsect2title">part – </span>
<span class="computeroutput">varchar default null</span> the part of BPEL variable in
question.
</div>
<div class="refsect2">
<span class="refsect2title">query – </span>
<span class="computeroutput">varchar default null</span> XPATH query for
selecting data in the BPEL variable
</div>
</div>
<div class="refsect1">
<div class="refsect1title">Return Types</div>
<p>this function returns the selected data from the BPEL variable. This
can be either an XML tree or a varchar or an integer.</p>
</div>
<div class="refsect1">
<div class="refsect1title">Description</div>
<p>
<span class="computeroutput">BPEL.BPEL.getVariableData</span>
<p>Returns select by query expression data from part (if
applicable) of the BPEL variable. If the variable is unknown,
or if the XPATH expression signals an error, the appropriate error is signalled.</p>
<p>This procedure may only be used in Virtuoso/PL code invoked from a BPEL process.</p>
</p>
</div>
<div class="refsect1">
<div class="refsect1title">Examples</div>
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<div class="example">
<div class="exampletitle">Simple example</div>
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<pre class="screen">
declare city, country varchar;
city := cast (BPEL.BPEL.getVariableData ('request',
'req_payload',
'/destRequest/city/text()');
</pre>
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