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<h1>22. Virtuoso Functions Guide - DB.DBA.TTLP</h1>
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<div id="text">
<h2>DB.DBA.TTLP</h2>
<div class="refpurpose">parses TTL (TURTLE or N3 resource) and places its triples into DB.DBA.RDF_QUAD.</div>
<div class="funcsynopsis">
<span class="funcdef">
<span class="function">DB.DBA.TTLP</span>
</span>
(<span class="paramdef">in <span class="parameter">strg</span> any</span>,
<span class="paramdef">in <span class="parameter">base</span> varchar</span>,
<span class="paramdef">in <span class="parameter">graph</span> varchar</span>,
<span class="paramdef">in <span class="parameter">flags </span> integer</span>);
</div>
<div class="refsect1">
<div class="refsect1title">Description</div>
<p>Parses TTL (TURTLE or N3 resource) and places its triples into DB.DBA.RDF_QUAD.</p>
</div>
<div class="refsect1">
<div class="refsect1title">Parameters</div>
<div class="refsect2">
<span class="refsect2title">strg – </span>
text of the resource
</div>
<div class="refsect2">
<span class="refsect2title">base – </span>
base IRI to resolve relative IRIs to absolute
</div>
<div class="refsect2">
<span class="refsect2title">graph – </span>
target graph IRI, parsed triples will appear in that graph.
</div>
<div class="refsect2">
<span class="refsect2title">flags – </span>
bitmask of parsing flags. Permits some sorts of syntax errors in resource.
Default is 0, meaning no permitted deviations from the spec. Other supported bits are:
<div>
<pre class="programlisting">
1 - Single quoted and double quoted strings may with newlines.
2 - Allows bnode predicates (but SPARQL processor may ignore them!).
4 - Allows variables, but triples with variables are ignored.
8 - Allows literal subjects, but triples with them are ignored.
16 - Allows '/', '#', '%' and '+' in local part of QName ("Qname with path")
32 - Allows invalid symbols between '<' and '>', i.e. in relative IRIs.
64 - Relax TURTLE syntax to include popular violations.
128 - Try to recover from lexical errors as much as it is possible.
256 - Allows TriG syntax, thus loading data in more than one graph.
512 - Allows loading N-quad dataset files with and optional context value to indicate provenance as detailed
<ulink url="http://sw.deri.org/2008/07/n-quads/">here</ulink>.
</pre>
</div>
</div>
</div>
<div class="refsect1">
<div class="refsect1title">Return Types</div>
<p>The return value is not specified and may be changed in future versions.</p>
</div>
<div class="refsect1">
<div class="refsect1title">Examples</div>
<a name="ex_ttlp" />
<div class="example">
<div class="exampletitle" />
<p>For loading a file of any greater length, it is most practical to use the file_to_string_output
function.</p>
<p>It is important the file to be accessible for the Virtuoso server. You need to have set properly
the DirsAllowed parameter value in section [Parameters] of the Virtuoso database INI file. For example on
Windows it could be:</p>
<div>
<pre class="screen">
virtuoso.ini file:
[Parameters]
...
DirsAllowed = .\tmp
...
</pre>
</div>
<p>So in the example the file you want to import from, should be in the tmp folder or in its
subfolder. Note that this example folder is a subfolder of the Virtuoso Server working directory.</p>
<p>
<strong>Sample Example 1</strong>
</p>
<div>
<pre class="screen">
SQL> ttlp (file_to_string_output ('.\tmp\data.ttl'), '', 'http://my_graph', 0);
</pre>
</div>
<p>Forth item in record of NQuad format is optional. If present then it is used as a graph.
If missed then the default graph is used. The purpose is to make SPARQL dataset serialization possible in
a "natural" way: the content of default graph is written without any graph name specified whereas the
content of named graphs is written with fouth field in place. Similarly, TriG uses default graph for
triples outside graph blocks. In all these cases, base IRI is used to resolve all relative IRIs of
the document, no matter what is the destination graph. Here is a simple example:</p>
<p>
<strong>Sample Example 2</strong>
</p>
<p>Suppose we have the simple nquad.nq file:</p>
<div>
<pre class="programlisting">
<http://www.w3.org/2002/01/tr-automation/tr.rdf> <http://purl.org/dc/elements/1.1/title> "W3C Standards and Technical Reports" <http://www.w3.org/People/Berners-Lee/card> .
<http://www.w3.org/People/Berners-Lee/card> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://xmlns.com/foaf/0.1/PersonalProfileDocument> <http://www.w3.org/People/Berners-Lee/card> .
<http://www.w3.org/People/Berners-Lee/card> <http://creativecommons.org/ns#license> <http://creativecommons.org/licenses/by-nc/3.0/> <http://www.w3.org/People/Berners-Lee/card> .
<http://www.w3.org/People/Berners-Lee/card> <http://purl.org/dc/elements/1.1/title> "Tim Berners-Lee's FOAF file" <http://www.w3.org/People/Berners-Lee/card> .
<http://www.w3.org/People/Berners-Lee/card> <http://xmlns.com/foaf/0.1/maker> <http://www.w3.org/People/Berners-Lee/card#i> <http://www.w3.org/People/Berners-Lee/card> .
<http://www.w3.org/People/Berners-Lee/card> <http://xmlns.com/foaf/0.1/primaryTopic> <http://www.w3.org/People/Berners-Lee/card#i> <http://www.w3.org/People/Berners-Lee/card> .
<http://www.w3.org/People/Berners-Lee/card#cm> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://xmlns.com/foaf/0.1/Person> <http://www.w3.org/People/Berners-Lee/card> .
<http://www.w3.org/People/Berners-Lee/card#cm> <http://www.w3.org/2000/01/rdf-schema#seeAlso> <http://www.koalie.net/foaf.rdf> <http://www.w3.org/People/Berners-Lee/card> .
<http://www.w3.org/People/Berners-Lee/card#cm> <http://xmlns.com/foaf/0.1/mbox> <mailto:coralie@w3.org> <http://www.w3.org/People/Berners-Lee/card> .
<http://www.w3.org/People/Berners-Lee/card#cm> <http://xmlns.com/foaf/0.1/name> "Coralie Mercier" <http://www.w3.org/People/Berners-Lee/card> .
</pre>
</div>
<p>Load the file:</p>
<div>
<pre class="programlisting">
SQL>DB.DBA.TTLP (file_to_string_output ('./nquad.nq'), '', 'http://localhost:8890/DAV/test', 512);
Done. -- 48 msec.
</pre>
</div>
<p>Select all triples from the graph with URI the fourth provenance URI from the NQuad file i.e.: <http://www.w3.org/People/Berners-Lee/card>:</p>
<div>
<pre class="programlisting">
SQL> sparql select * from <http://www.w3.org/People/Berners-Lee/card> where {?s ?p ?o};
s p o
VARCHAR VARCHAR VARCHAR
________________________________________________
http://www.w3.org/2002/01/tr-automation/tr.rdf http://purl.org/dc/elements/1.1/title W3C Standards and Technical Reports
http://www.w3.org/People/Berners-Lee/card http://www.w3.org/1999/02/22-rdf-syntax-ns#type http://xmlns.com/foaf/0.1/PersonalProfileDocument
http://www.w3.org/People/Berners-Lee/card http://xmlns.com/foaf/0.1/primaryTopic http://www.w3.org/People/Berners-Lee/card#i
http://www.w3.org/People/Berners-Lee/card http://purl.org/dc/elements/1.1/title Tim Berners-Lee's FOAF file
http://www.w3.org/People/Berners-Lee/card http://xmlns.com/foaf/0.1/maker http://www.w3.org/People/Berners-Lee/card#i
http://www.w3.org/People/Berners-Lee/card http://creativecommons.org/ns#license http://creativecommons.org/licenses/by-nc/3.0/
http://www.w3.org/People/Berners-Lee/card#cm http://www.w3.org/1999/02/22-rdf-syntax-ns#type http://xmlns.com/foaf/0.1/Person
http://www.w3.org/People/Berners-Lee/card#cm http://xmlns.com/foaf/0.1/mbox mailto:coralie@w3.org
http://www.w3.org/People/Berners-Lee/card#cm http://xmlns.com/foaf/0.1/name Coralie Mercier
http://www.w3.org/People/Berners-Lee/card#cm http://www.w3.org/2000/01/rdf-schema#seeAlso http://www.koalie.net/foaf.rdf
10 Rows. -- 7 msec.
</pre>
</div>
</div>
</div>
<div class="refsect1">
<div class="refsect1title">See Also</div>
<p>
<a href="fn_rdf_audit_metadata.html">DB.DBA.RDF_AUDIT_METADATA</a>
</p>
<p>
<a href="fn_rdf_backup_metadata.html">DB.DBA.RDF_BACKUP_METADATA</a>
</p>
<p>
<a href="fn_rdf_load_rdfxml.html">DB.DBA.RDF_LOAD_RDFXML</a>
</p>
<p>
<a href="fn_rdf_load_rdfxml_mt.html">DB.DBA.RDF_LOAD_RDFXML_MT</a>
</p>
<p>
<a href="fn_ttlp_mt.html">DB.DBA.TTLP_MT</a>
</p>
<p>
<a href="fn_ttlp_mt_local_file.html">DB.DBA.TTLP_MT_LOCAL_FILE</a>
</p>
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