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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_rdf_convert_rdfxml_to_ttl">
<refmeta>
<refentrytitle>DB.DBA.RDF_CONVERT_RDFXML_TO_TTL</refentrytitle>
<refmiscinfo>rdf</refmiscinfo>
</refmeta>
<refnamediv>
<refname>DB.DBA.RDF_CONVERT_RDFXML_TO_TTL</refname>
<refpurpose>Converts rdf xml to ttl.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis id="fsyn_rdf_convert_rdfxml_to_ttl">
<funcprototype id="fproto_rdf_convert_rdfxml_to_ttl">
<funcdef><function>DB.DBA.RDF_CONVERT_RDFXML_TO_TTL</function></funcdef>
<paramdef>in <parameter>strg</parameter> varchar</paramdef>
<paramdef>in <parameter>base</parameter> varchar</paramdef>
<paramdef>inout <parameter>ttl_ses</parameter> any</paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="desc_rdf_convert_rdfxml_to_ttl">
<title>Description</title>
<para>Converts rdf xml to ttl.</para>
</refsect1>
<refsect1 id="params_rdf_convert_rdfxml_to_ttl">
<title>Parameters</title>
<refsect2><title>strg</title>
<para>text of the rdf resource</para>
</refsect2>
<refsect2><title>base</title>
<para>base IRI to resolve relative IRIs to absolute</para>
</refsect2>
<refsect2><title>ttl_ses</title>
<para>ttl resource</para>
</refsect2>
</refsect1>
<refsect1 id="ret_rdf_convert_rdfxml_to_ttl"><title>Return Types</title>
<para>The return value is not specified and may be changed in future versions.</para>
</refsect1>
<refsect1 id="examples_rdf_convert_rdfxml_to_ttl">
<title>Examples</title>
<example id="ex_rdf_convert_rdfxml_to_ttl"><title>Simple example</title>
<screen><![CDATA[
create procedure DB.DBA.RDF_XML_IRI_TO_TTL (inout obj any, inout ses any)
{
declare res varchar;
if (isiri_id (obj))
{
if (obj >= min_bnode_iri_id ())
{
if (obj >= #ib0)
http (sprintf ('_:bb%d ', iri_id_num (obj) - iri_id_num (#ib0)), ses);
else
http (sprintf ('_:b%d ', iri_id_num (obj)), ses);
}
else
{
res := coalesce (id_to_iri (obj), sprintf ('_:bad_iid_%d', iri_id_num (obj)));
http ('<', ses);
http_escape (res, 12, ses, 1, 1);
http ('> ', ses);
}
}
else if (__tag of varchar = __tag (obj))
{
if ("LEFT" (obj, 9) = 'nodeID://')
{
http ('_:', ses);
http (subseq (obj, 9), ses);
http (' ', ses);
}
else
{
http ('<', ses);
http_escape (obj, 12, ses, 1, 1);
http ('> ', ses);
}
}
else
{
http ('<', ses);
http_escape (cast (obj as varchar), 12, ses, 1, 1);
http ('> ', ses);
}
}
;
create procedure DB.DBA.RDF_XML_OBJ_TO_TTL (
inout o_val any, inout o_type varchar, inout o_lang varchar,
inout ses any)
{
declare res varchar;
if (isiri_id (o_val))
{
if (o_val >= min_bnode_iri_id ())
{
if (o_val >= #ib0)
http (sprintf ('_:bb%d ', iri_id_num (o_val) - iri_id_num (#ib0)), ses);
else
http (sprintf ('_:b%d ', iri_id_num (o_val)), ses);
}
else
{
res := coalesce (id_to_iri (o_val), sprintf ('_:bad_iid_%d', iri_id_num (o_val)));
http ('<', ses);
http_escape (res, 12, ses, 1, 1);
http ('> ', ses);
}
return;
}
http ('"', ses);
if (__tag of XML = o_val)
http_escape (serialize_to_UTF8_xml (o_val), 11, ses, 1, 1);
else
http_escape (o_val, 11, ses, 1, 1);
if (isstring (o_type))
{
http ('"^^<', ses);
http_escape (o_type, 12, ses, 1, 1);
http ('> ', ses);
}
else if (isstring (o_lang))
{
http ('"@', ses);
http (o_lang, ses);
http (' ', ses);
}
else
http ('" ', ses);
}
;
create procedure DB.DBA.RDF_CONVERT_RDFXML_TO_TTL_EV_NEW_BLANK (inout g varchar, inout app_env any, inout res IRI_ID)
{
;
}
;
create procedure DB.DBA.RDF_CONVERT_RDFXML_TO_TTL_EV_TRIPLE (
inout g_iid IRI_ID, inout s_uri varchar, inout p_uri varchar,
inout o_uri varchar,
inout app_env any )
{
DB.DBA.RDF_XML_IRI_TO_TTL (s_uri, app_env);
DB.DBA.RDF_XML_IRI_TO_TTL (p_uri, app_env);
DB.DBA.RDF_XML_IRI_TO_TTL (o_uri, app_env);
http ('.\n', app_env);
}
;
create procedure DB.DBA.RDF_CONVERT_RDFXML_TO_TTL_EV_TRIPLE_L (
inout g_iid IRI_ID, inout s_uri varchar, inout p_uri varchar,
inout o_val any, inout o_type varchar, inout o_lang varchar,
inout app_env any )
{
DB.DBA.RDF_XML_IRI_TO_TTL (s_uri, app_env);
DB.DBA.RDF_XML_IRI_TO_TTL (p_uri, app_env);
DB.DBA.RDF_XML_OBJ_TO_TTL (o_val, o_type, o_lang, app_env);
http ('.\n', app_env);
}
;
create procedure DB.DBA.RDF_CONVERT_RDFXML_TO_TTL (in strg varchar, in base varchar, inout ttl_ses any)
{
rdf_load_rdfxml (strg, 0,
'http://example.com',
vector (
'DB.DBA.TTLP_EV_NEW_GRAPH',
'DB.DBA.RDF_CONVERT_RDFXML_TO_TTL_EV_NEW_BLANK',
'DB.DBA.TTLP_EV_GET_IID',
'DB.DBA.RDF_CONVERT_RDFXML_TO_TTL_EV_TRIPLE',
'DB.DBA.RDF_CONVERT_RDFXML_TO_TTL_EV_TRIPLE_L',
'' ),
ttl_ses,
base );
}
;
create procedure DB.DBA.RDF_CONVERT_RDFXML_FILE_TO_TTL_FILE (in rdfxml_source_filename varchar, in base varchar, in ttl_target_filename varchar)
{
declare in_ses, out_ses any;
in_ses := file_to_string_output (rdfxml_source_filename);
out_ses := string_output ();
DB.DBA.RDF_CONVERT_RDFXML_TO_TTL (in_ses, base, out_ses);
string_to_file (ttl_target_filename, out_ses, -2);
}
;
-- Sample call:
DB.DBA.RDF_CONVERT_RDFXML_FILE_TO_TTL_FILE ('open_source_projects.rdf', 'http://example.com', 'open_source_projects.ttl');
]]></screen>
</example>
</refsect1>
<refsect1 id="seealso_rdf_convert_rdfxml_to_ttl">
<title>See Also</title>
<para><link linkend="fn_rdf_audit_metadata"><function>DB.DBA.RDF_AUDIT_METADATA</function></link></para>
<para><link linkend="fn_rdf_backup_metadata"><function>DB.DBA.RDF_BACKUP_METADATA</function></link></para>
<para><link linkend="fn_rdf_load_rdfxml"><function>DB.DBA.RDF_LOAD_RDFXML</function></link></para>
<para><link linkend="fn_rdf_load_rdfxml_mt"><function>DB.DBA.RDF_LOAD_RDFXML_MT</function></link></para>
<para><link linkend="fn_ttlp"><function>DB.DBA.TTLP</function></link></para>
</refsect1>
</refentry>
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