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<title>Set RDF triple callback handler</title>
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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="tutorial-parser-set-triple-handler"></a>Set RDF triple callback handler</h2></div></div></div>
<p>The main reason to parse a syntax is to get RDF triples
returned and this is done by a callback function which is called
with parameters of a user data pointer and the triple itself.
The handler is set with
<a href="raptor-section-parser.html#raptor-set-statement-handler"><code class="function">raptor_set_statement_handler()</code></a>
as follows:
</p>
<pre class="programlisting">
  void
  triples_handler(void* user_data, const raptor_statement* triple) 
  {
    /* do something with the triple */
  }

  raptor_set_statement_handler(rdf_parser, user_data, triples_handler);
</pre>
<p>
</p>
<p>It is optional to set a handler function for triples, which does
have some uses if just counting triples or validating a syntax.
</p>
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