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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="fn_xml_uri_merge">
<refmeta>
<refentrytitle>xml_uri_merge</refentrytitle>
<refmiscinfo>xml</refmiscinfo>
</refmeta>
<refnamediv>
<refname>xml_uri_merge</refname>
<refpurpose>Resolve a relative URI in the context of a base URI</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis id="fsyn_xml_uri_merge">
<funcprototype id="fsyn_xml_uri_merge">
<funcdef>varchar <function>DB.DBA.xml_uri_merge</function></funcdef>
<paramdef>in <parameter>base</parameter> varchar</paramdef>
<paramdef>in <parameter>ref</parameter> varchar</paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="desc_xml_uri_merge"><title>Description</title>
<para>
This interprets a possibly relative URI in the context of an absolute base URI and returns the resulting URI.
</para>
<para>
The supported protocol identifiers are http: file: and virt:. The virt: allows
referencing data stored in local Virtuoso tables without passing through HTTP. See
'Entity References in Stored XML' for details.
</para>
<para>
The effective URI will be the reference if the URI of the reference is absolute. Otherwise it will
be the base URI modified by the relative reference.
</para>
</refsect1>
<refsect1 id="params_xml_uri_merge">
<title>Parameters</title>
<refsect2>
<title>base</title>
<para><type>VARCHAR</type>, the location of the resources to be found.</para>
</refsect2>
<refsect2>
<title>ref</title>
<para>The reference name of the resource, relative to the base.</para>
</refsect2>
</refsect1>
<refsect1 id="seealso"><title>See Also</title>
<para><link linkend="fn_xml_uri_get">xml_uri_get()</link></para>
</refsect1>
</refentry>
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