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<a href="#rasqal-section-service.description" class="shortcut">Description</a>
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<h2><span class="refentrytitle"><a name="rasqal-section-service.top_of_page"></a>Service</span></h2>
<p>Service — Execute queries remotely via a SPARQL HTTP Protocol service.</p>
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<div class="refsynopsisdiv">
<a name="rasqal-section-service.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">typedef <a class="link" href="rasqal-section-service.html#rasqal-service" title="rasqal_service">rasqal_service</a>;
<a class="link" href="rasqal-section-service.html#rasqal-service" title="rasqal_service"><span class="returnvalue">rasqal_service</span></a> * <a class="link" href="rasqal-section-service.html#rasqal-new-service" title="rasqal_new_service ()">rasqal_new_service</a> (<em class="parameter"><code><a class="link" href="rasqal-section-general.html#rasqal-world" title="rasqal_world"><span class="type">rasqal_world</span></a> *world</code></em>,
<em class="parameter"><code><span class="type">raptor_uri</span> *service_uri</code></em>,
<em class="parameter"><code>const unsigned <span class="type">char</span> *query_string</code></em>,
<em class="parameter"><code><span class="type">raptor_sequence</span> *data_graphs</code></em>);
<span class="returnvalue">void</span> <a class="link" href="rasqal-section-service.html#rasqal-free-service" title="rasqal_free_service ()">rasqal_free_service</a> (<em class="parameter"><code><a class="link" href="rasqal-section-service.html#rasqal-service" title="rasqal_service"><span class="type">rasqal_service</span></a> *svc</code></em>);
<a class="link" href="rasqal-section-query-results.html#rasqal-query-results" title="rasqal_query_results"><span class="returnvalue">rasqal_query_results</span></a> * <a class="link" href="rasqal-section-service.html#rasqal-service-execute" title="rasqal_service_execute ()">rasqal_service_execute</a> (<em class="parameter"><code><a class="link" href="rasqal-section-service.html#rasqal-service" title="rasqal_service"><span class="type">rasqal_service</span></a> *svc</code></em>);
<span class="returnvalue">int</span> <a class="link" href="rasqal-section-service.html#rasqal-service-set-format" title="rasqal_service_set_format ()">rasqal_service_set_format</a> (<em class="parameter"><code><a class="link" href="rasqal-section-service.html#rasqal-service" title="rasqal_service"><span class="type">rasqal_service</span></a> *svc</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *format</code></em>);
<span class="returnvalue">int</span> <a class="link" href="rasqal-section-service.html#rasqal-service-set-www" title="rasqal_service_set_www ()">rasqal_service_set_www</a> (<em class="parameter"><code><a class="link" href="rasqal-section-service.html#rasqal-service" title="rasqal_service"><span class="type">rasqal_service</span></a> *svc</code></em>,
<em class="parameter"><code><span class="type">raptor_www</span> *www</code></em>);
</pre>
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<div class="refsect1">
<a name="rasqal-section-service.description"></a><h2>Description</h2>
<p>
The SPARQL Protocol defines an HTTP binding that enables remote
queries to be executed over specified default and named graphs.
This class allows that to be constructed and executed, returning
a Rasqal query results <a class="link" href="rasqal-section-query-results.html#rasqal-query-results" title="rasqal_query_results"><span class="type">rasqal_query_results</span></a> that may be used,
for example, with a formatter to generate output.
</p>
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<div class="refsect1">
<a name="rasqal-section-service.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="rasqal-service"></a><h3>rasqal_service</h3>
<pre class="programlisting">typedef struct rasqal_service_s rasqal_service;
</pre>
<p>
Rasqal SPARQL Protocol Service
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<div class="refsect2">
<a name="rasqal-new-service"></a><h3>rasqal_new_service ()</h3>
<pre class="programlisting"><a class="link" href="rasqal-section-service.html#rasqal-service" title="rasqal_service"><span class="returnvalue">rasqal_service</span></a> * rasqal_new_service (<em class="parameter"><code><a class="link" href="rasqal-section-general.html#rasqal-world" title="rasqal_world"><span class="type">rasqal_world</span></a> *world</code></em>,
<em class="parameter"><code><span class="type">raptor_uri</span> *service_uri</code></em>,
<em class="parameter"><code>const unsigned <span class="type">char</span> *query_string</code></em>,
<em class="parameter"><code><span class="type">raptor_sequence</span> *data_graphs</code></em>);</pre>
<p>
Constructor - create a new rasqal protocol service object.
</p>
<p>
Create a structure to execute a sparql protocol service at
<em class="parameter"><code>service_uri</code></em> running the query <em class="parameter"><code>query_string</code></em> and returning
a sparql result set.
</p>
<p>
All arguments are copied by the service object
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<td><p><span class="term"><em class="parameter"><code>world</code></em> :</span></p></td>
<td>rasqal_world object</td>
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<td><p><span class="term"><em class="parameter"><code>service_uri</code></em> :</span></p></td>
<td>sparql protocol service URI</td>
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<td><p><span class="term"><em class="parameter"><code>query_string</code></em> :</span></p></td>
<td>query string (or NULL)</td>
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<td><p><span class="term"><em class="parameter"><code>data_graphs</code></em> :</span></p></td>
<td>sequence of <a class="link" href="rasqal-section-data.html#rasqal-data-graph" title="rasqal_data_graph"><span class="type">rasqal_data_graph</span></a> graphs for service</td>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a new <a class="link" href="rasqal-section-query.html#rasqal-query" title="rasqal_query"><span class="type">rasqal_query</span></a> object or NULL on failure</td>
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<div class="refsect2">
<a name="rasqal-free-service"></a><h3>rasqal_free_service ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> rasqal_free_service (<em class="parameter"><code><a class="link" href="rasqal-section-service.html#rasqal-service" title="rasqal_service"><span class="type">rasqal_service</span></a> *svc</code></em>);</pre>
<p>
Destructor - destroy a <a class="link" href="rasqal-section-service.html#rasqal-service" title="rasqal_service"><span class="type">rasqal_service</span></a> object.
</p>
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<td><p><span class="term"><em class="parameter"><code>svc</code></em> :</span></p></td>
<td>
<a class="link" href="rasqal-section-service.html#rasqal-service" title="rasqal_service"><span class="type">rasqal_service</span></a> object</td>
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<div class="refsect2">
<a name="rasqal-service-execute"></a><h3>rasqal_service_execute ()</h3>
<pre class="programlisting"><a class="link" href="rasqal-section-query-results.html#rasqal-query-results" title="rasqal_query_results"><span class="returnvalue">rasqal_query_results</span></a> * rasqal_service_execute (<em class="parameter"><code><a class="link" href="rasqal-section-service.html#rasqal-service" title="rasqal_service"><span class="type">rasqal_service</span></a> *svc</code></em>);</pre>
<p>
Execute a rasqal sparql protocol service
</p>
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<td><p><span class="term"><em class="parameter"><code>svc</code></em> :</span></p></td>
<td>rasqal service</td>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>query results or NULL on failure</td>
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<div class="refsect2">
<a name="rasqal-service-set-format"></a><h3>rasqal_service_set_format ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span> rasqal_service_set_format (<em class="parameter"><code><a class="link" href="rasqal-section-service.html#rasqal-service" title="rasqal_service"><span class="type">rasqal_service</span></a> *svc</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *format</code></em>);</pre>
<p>
Set the MIME Type to use in HTTP Accept when executing the service
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<td><p><span class="term"><em class="parameter"><code>svc</code></em> :</span></p></td>
<td>
<a class="link" href="rasqal-section-service.html#rasqal-service" title="rasqal_service"><span class="type">rasqal_service</span></a> service object</td>
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<td><p><span class="term"><em class="parameter"><code>format</code></em> :</span></p></td>
<td>service mime type (or NULL)</td>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>non 0 on failure</td>
</tr>
</tbody>
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<hr>
<div class="refsect2">
<a name="rasqal-service-set-www"></a><h3>rasqal_service_set_www ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span> rasqal_service_set_www (<em class="parameter"><code><a class="link" href="rasqal-section-service.html#rasqal-service" title="rasqal_service"><span class="type">rasqal_service</span></a> *svc</code></em>,
<em class="parameter"><code><span class="type">raptor_www</span> *www</code></em>);</pre>
<p>
Set the WWW object to use when executing the service
</p>
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<td><p><span class="term"><em class="parameter"><code>svc</code></em> :</span></p></td>
<td>
<a class="link" href="rasqal-section-service.html#rasqal-service" title="rasqal_service"><span class="type">rasqal_service</span></a> service object</td>
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<td><p><span class="term"><em class="parameter"><code>www</code></em> :</span></p></td>
<td>WWW object (or NULL)</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>non 0 on failure</td>
</tr>
</tbody>
</table></div>
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