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<h1 class='title'>SXP Reference</h1>
<center><table class='api-entry' width='100%' cellspacing='0'border='1' cellpadding='10'>
<tr><td class='entry-heading'>
<table class='entry-heading-table' width='100%' cellpadding='5'cellspacing='0'><tr>
<td class='entry-title' valign='center'><font size='+5'>SXP_query</font></td>
<td class='entry-type' align='center' width='25%'>Functions</td>
</tr></table>
</td></tr>
<tr><td class='entry-syntax'>
<h4 class='entry-subhead'>Syntax</h4><pre>
SXP_query(Q, query, node, position, size)
</pre>
<center><table class='param-list' border='1' cellpadding='3' cellspacing='1'><tr class='param-list-head'><th>Name</th><th>Type</th><th>Description</th></tr>
<tr class='param-row-even'><td class='param-name'><code>Q</code></td><td param-type'><code><a href='javascript:navToEntry("QueryContext");'>QueryContext</a></code></td><td class='param-desc'>The current query context.
</td>
</tr>
<tr class='param-row-odd'><td class='param-name'><code>query</code></td><td param-type'><code>const SXP_char*</code></td><td class='param-desc'>The text of the query.
</td>
</tr>
<tr class='param-row-even'><td class='param-name'><code>node</code></td><td param-type'><code><a href='javascript:navToEntry("SXP_Node");'>SXP_Node</a></code></td><td class='param-desc'>The current node for the query.
</td>
</tr>
<tr class='param-row-odd'><td class='param-name'><code>position</code></td><td param-type'><code>int</code></td><td class='param-desc'>The position of the current node in the evaluation context. As SXP
is a C interface, the position is zero-based (unlike one-based
XPath nodesets). Thus, you must set this parameter to 0 if you want
the "position()" query to return 1.
</td>
</tr>
<tr class='param-row-even'><td class='param-name'><code>size</code></td><td param-type'><code>int</code></td><td class='param-desc'>The size of the evaluation context.
</td>
</tr>
<tr class='param-row-odd'><td class='param-name'><code>(RET)</code></td><td param-type'><code>int</code></td><td class='param-desc'>The error code.
</td>
</tr>
</table></center>
</td></tr>
<tr><td class='entry-description'>
<h4 class='entry-subhead'>Description</h4>
Evaluates a query (given as text) based on the current node, the
context position (zero-based) and the context size. Any namespaces
declared using <code><a href='javascript:navToEntry("SXP_addNamespaceDeclaration");'>SXP_addNamespaceDeclaration</a></code> are used for the
evaluation, as are the variable bindings made using functions like
<code><a href='javascript:navToEntry("SXP_addVariableString");'>SXP_addVariableString</a></code>. Upon completion of the query, the
pending namespace declarations and variable bindings are <b>cleared</b>.
</td></tr>
<tr><td class='entry-example'>
<h4 class='entry-subhead'>Example</h4>
<pre> SXP_query(Q, "node[1]/@att", root, 0, 1);
</pre></td></tr>
<tr><td class='entry-seealso'>
<h4 class='entry-subhead'>See Also</h4>
<table class='seealso-table'>
<tr class='seealso-groups'><td>Groups</td>
<td>[ <a href='javascript:navToGroup("GROUP_Functions")'>Functions</a> ]</td></tr>
<tr class='seealso-internals'><td>Entries</td>
<td>[ <a href='javascript:navToEntry("QueryContext");'>QueryContext</a> | <a href='javascript:navToEntry("SXP_Node");'>SXP_Node</a> | <a href='javascript:navToEntry("SXP_addNamespaceDeclaration");'>SXP_addNamespaceDeclaration</a> | <a href='javascript:navToEntry("SXP_addVariableString");'>SXP_addVariableString</a> | <a href='javascript:navToEntry("SXP_getResultString");'>SXP_getResultString</a> | <a href='javascript:navToEntry("SXP_getResultType");'>SXP_getResultType</a> ]</td></tr>
</table>
</td></tr>
</table></center><br>
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