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<?xml version="1.0" encoding="ISO-8859-1"?>
<!--
-
- This file is part of the OpenLink Software Virtuoso Open-Source (VOS)
- project.
-
- Copyright (C) 1998-2018 OpenLink Software
-
- This project is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; only version 2 of the License, dated June 1991.
-
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-
-
-->
<refentry id="xpf_namespace_uri">
<refmeta>
<refentrytitle>namespace-uri</refentrytitle>
<refmiscinfo>XPATH</refmiscinfo>
</refmeta>
<refnamediv>
<refname>namespace-uri</refname>
<refpurpose>Returns the namespace URI of the extended name of the given node</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis id="xpf_syn_namespace_uri">
<funcprototype id="xpf_proto_namespace_uri">
<funcdef>string <function>namespace-uri</function></funcdef>
<paramdef><parameter>node_obj</parameter> any</paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="xpf_desc_namespace_uri"><title>Description</title>
<para>If given argument is a node, the function returns the URI string of the
namespace specified in the name of node.
If the argument is node-set, first node of the node-set will be considered.
Empty string is returned if the argument is an empty node-set, a node without
name or if the argument is not a node.</para>
<para>If the argument is omitted, context node is used instead as if it is a node-set of one element.</para>
</refsect1>
<refsect1 id="xpf_params_namespace_uri"><title>Parameters</title>
<refsect2><title>node_obj</title>
<para>Node whose namespace URI is to be returned.</para></refsect2>
</refsect1>
<refsect1 id="xpf_ret_namespace_uri"><title>Return Types</title><para>String</para></refsect1>
<refsect1 id="xpf_examples_namespace_uri"><title>Examples</title>
<example id="xpf_ex_namespace_uri"><title></title>
<para>Find all elements whose namespace URIs contain "html" substring</para>
<screen>//*[contains(namespace-uri(),'html')]</screen>
</example>
</refsect1>
<refsect1 id="xpf_seealso_namespace_uri"><title>See Also</title>
<para><link linkend="xpf_local_name">local-name()</link><link linkend="xpf_name">name()</link></para>
</refsect1>
</refentry>
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