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<h2><span class="refentrytitle"><a name="lasso-LassoDataService.top_of_page"></a>LassoDataService</span></h2>
<p>LassoDataService — ID-WSF Data Service profile</p>
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<td class="gallery_image" valign="top" align="right"></td>
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<div class="refsect1">
<a name="lasso-LassoDataService.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="returnvalue">LassoDataService</span></a> *
</td>
<td class="function_name">
<a class="link" href="lasso-LassoDataService.html#lasso-data-service-new" title="lasso_data_service_new ()">lasso_data_service_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="returnvalue">LassoDataService</span></a> *
</td>
<td class="function_name">
<a class="link" href="lasso-LassoDataService.html#lasso-data-service-new-full" title="lasso_data_service_new_full ()">lasso_data_service_new_full</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">lasso_error_t</span>
</td>
<td class="function_name">
<a class="link" href="lasso-LassoDataService.html#lasso-data-service-init-query" title="lasso_data_service_init_query ()">lasso_data_service_init_query</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">lasso_error_t</span>
</td>
<td class="function_name">
<a class="link" href="lasso-LassoDataService.html#lasso-data-service-add-query-item" title="lasso_data_service_add_query_item ()">lasso_data_service_add_query_item</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">lasso_error_t</span>
</td>
<td class="function_name">
<a class="link" href="lasso-LassoDataService.html#lasso-data-service-build-modify-response-msg" title="lasso_data_service_build_modify_response_msg ()">lasso_data_service_build_modify_response_msg</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">lasso_error_t</span>
</td>
<td class="function_name">
<a class="link" href="lasso-LassoDataService.html#lasso-data-service-build-response-msg" title="lasso_data_service_build_response_msg ()">lasso_data_service_build_response_msg</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">lasso_error_t</span>
</td>
<td class="function_name">
<a class="link" href="lasso-LassoDataService.html#lasso-data-service-process-query-response-msg" title="lasso_data_service_process_query_response_msg ()">lasso_data_service_process_query_response_msg</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">lasso_error_t</span>
</td>
<td class="function_name">
<a class="link" href="lasso-LassoDataService.html#lasso-data-service-get-answer" title="lasso_data_service_get_answer ()">lasso_data_service_get_answer</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">lasso_error_t</span>
</td>
<td class="function_name">
<a class="link" href="lasso-LassoDataService.html#lasso-data-service-get-answers" title="lasso_data_service_get_answers ()">lasso_data_service_get_answers</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">lasso_error_t</span>
</td>
<td class="function_name">
<a class="link" href="lasso-LassoDataService.html#lasso-data-service-get-answers-by-select" title="lasso_data_service_get_answers_by_select ()">lasso_data_service_get_answers_by_select</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">lasso_error_t</span>
</td>
<td class="function_name">
<a class="link" href="lasso-LassoDataService.html#lasso-data-service-get-answers-by-item-id" title="lasso_data_service_get_answers_by_item_id ()">lasso_data_service_get_answers_by_item_id</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">lasso_error_t</span>
</td>
<td class="function_name">
<a class="link" href="lasso-LassoDataService.html#lasso-data-service-init-modify" title="lasso_data_service_init_modify ()">lasso_data_service_init_modify</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">lasso_error_t</span>
</td>
<td class="function_name">
<a class="link" href="lasso-LassoDataService.html#lasso-data-service-add-modification" title="lasso_data_service_add_modification ()">lasso_data_service_add_modification</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">lasso_error_t</span>
</td>
<td class="function_name">
<a class="link" href="lasso-LassoDataService.html#lasso-data-service-process-modify-response-msg" title="lasso_data_service_process_modify_response_msg ()">lasso_data_service_process_modify_response_msg</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">lasso_error_t</span>
</td>
<td class="function_name">
<a class="link" href="lasso-LassoDataService.html#lasso-data-service-process-request-msg" title="lasso_data_service_process_request_msg ()">lasso_data_service_process_request_msg</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">lasso_error_t</span>
</td>
<td class="function_name">
<a class="link" href="lasso-LassoDataService.html#lasso-data-service-validate-request" title="lasso_data_service_validate_request ()">lasso_data_service_validate_request</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">lasso_error_t</span>
</td>
<td class="function_name">
<a class="link" href="lasso-LassoDataService.html#lasso-data-service-build-query-response-msg" title="lasso_data_service_build_query_response_msg ()">lasso_data_service_build_query_response_msg</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">lasso_error_t</span>
</td>
<td class="function_name">
<a class="link" href="lasso-LassoDataService.html#lasso-data-service-get-query-item" title="lasso_data_service_get_query_item ()">lasso_data_service_get_query_item</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="lasso-LassoDataService.html#lasso-data-service-set-resource-data" title="lasso_data_service_set_resource_data ()">lasso_data_service_set_resource_data</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">xmlNode</span> *
</td>
<td class="function_name">
<a class="link" href="lasso-LassoDataService.html#lasso-data-service-get-resource-data" title="lasso_data_service_get_resource_data ()">lasso_data_service_get_resource_data</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="lasso-LassoDataService.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody><tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService">LassoDataService</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="lasso-LassoDataService.description"></a><h2>Description</h2>
<p>DataService allows Attribute Consumers (WSC) to request an Attribute Provider (WSP) to get
or modify data about users with their consent.</p>
<p>Following up on <a class="link" href="lasso-LassoDiscovery.html#LassoDiscovery" title="struct LassoDiscovery"><span class="type">LassoDiscovery</span></a> first example, it created a <em class="parameter"><code>service</code></em>
object,
this is a <a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> instance. This example continues from that step
and retrieves the name of the principal:</p>
<div class="informalexample">
<table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td class="listing_lines" align="right"><pre>1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16</pre></td>
<td class="listing_code"><pre class="programlisting"><span class="gtkdoc kwb">char</span> <span class="gtkdoc opt">*</span>soap_answer<span class="gtkdoc opt">;</span> <span class="gtkdoc slc">// SOAP answer from data service</span>
xmlNode <span class="gtkdoc opt">*</span>principal_name<span class="gtkdoc opt">;</span> <span class="gtkdoc slc">// libxml2 xmlNode with the principal name</span>
service <span class="gtkdoc opt">=</span> <span class="function"><a href="lasso-LassoDiscovery.html#lasso-discovery-get-service">lasso_discovery_get_service</a></span><span class="gtkdoc opt">(</span>discovery<span class="gtkdoc opt">);</span>
<span class="function"><a href="lasso-LassoDataService.html#lasso-data-service-init-query">lasso_data_service_init_query</a></span><span class="gtkdoc opt">(</span>service<span class="gtkdoc opt">,</span> <span class="string">"/pp:PP/pp:InformalName"</span><span class="gtkdoc opt">,</span> NULL<span class="gtkdoc opt">);</span>
<span class="function">lasso_data_service_build_request_msg</span><span class="gtkdoc opt">(</span>service<span class="gtkdoc opt">);</span>
<span class="gtkdoc slc">// service must perform SOAP call to LASSO_WSF_PROFILE(service)->msg_url</span>
<span class="gtkdoc slc">// the SOAP message is LASSO_WSF_PROFILE(service)->msg_body. The answer</span>
<span class="gtkdoc slc">// is stored in char* soap_answer;</span>
<span class="function"><a href="lasso-LassoDataService.html#lasso-data-service-process-query-response-msg">lasso_data_service_process_query_response_msg</a></span><span class="gtkdoc opt">(</span>service<span class="gtkdoc opt">,</span> soap_answer<span class="gtkdoc opt">);</span>
principal_name <span class="gtkdoc opt">=</span> <span class="function"><a href="lasso-LassoDataService.html#lasso-data-service-get-answer">lasso_data_service_get_answer</a></span><span class="gtkdoc opt">(</span>service<span class="gtkdoc opt">,</span> <span class="string">"/pp:PP/pp:InformalName"</span><span class="gtkdoc opt">);</span>
<span class="gtkdoc slc">// app should probably then use xmlNodeGetContent libxml2 function to get</span>
<span class="gtkdoc slc">// access to node content.</span></pre></td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="refsect1">
<a name="lasso-LassoDataService.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="lasso-data-service-new"></a><h3>lasso_data_service_new ()</h3>
<pre class="programlisting"><a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="returnvalue">LassoDataService</span></a> *
lasso_data_service_new (<em class="parameter"><code><a class="link" href="lasso-LassoServer.html#LassoServer" title="struct LassoServer"><span class="type">LassoServer</span></a> *server</code></em>);</pre>
<p>Creates a new <a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a>.</p>
<div class="refsect3">
<a name="lasso-data-service-new.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>server</p></td>
<td class="parameter_description"><p>the <a class="link" href="lasso-LassoServer.html#LassoServer" title="struct LassoServer"><span class="type">LassoServer</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="lasso-data-service-new.returns"></a><h4>Returns</h4>
<p> a newly created <a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> object; or NULL if an
error occured.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="lasso-data-service-new-full"></a><h3>lasso_data_service_new_full ()</h3>
<pre class="programlisting"><a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="returnvalue">LassoDataService</span></a> *
lasso_data_service_new_full (<em class="parameter"><code><a class="link" href="lasso-LassoServer.html#LassoServer" title="struct LassoServer"><span class="type">LassoServer</span></a> *server</code></em>,
<em class="parameter"><code><a class="link" href="lasso-LassoDiscoResourceOffering.html#LassoDiscoResourceOffering" title="struct LassoDiscoResourceOffering"><span class="type">LassoDiscoResourceOffering</span></a> *offering</code></em>);</pre>
<p>Creates a new <a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a>.</p>
<div class="refsect3">
<a name="lasso-data-service-new-full.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>server</p></td>
<td class="parameter_description"><p>the <a class="link" href="lasso-LassoServer.html#LassoServer" title="struct LassoServer"><span class="type">LassoServer</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>offering</p></td>
<td class="parameter_description"><p>the <a class="link" href="lasso-LassoDiscoResourceOffering.html#LassoDiscoResourceOffering" title="struct LassoDiscoResourceOffering"><span class="type">LassoDiscoResourceOffering</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="lasso-data-service-new-full.returns"></a><h4>Returns</h4>
<p> a newly created <a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> object; or NULL if an error occured.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="lasso-data-service-init-query"></a><h3>lasso_data_service_init_query ()</h3>
<pre class="programlisting"><span class="returnvalue">lasso_error_t</span>
lasso_data_service_init_query (<em class="parameter"><code><a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> *service</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *select</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *item_id</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *security_mech_id</code></em>);</pre>
<p>Initializes a new dst:Query request, asking for element <em class="parameter"><code>select</code></em>
(with optional itemID set to
<em class="parameter"><code>item_id</code></em>
). <em class="parameter"><code>item_id</code></em>
may be NULL only if the query won't contain other query items. You must
follow this constraint, it will not be checked.</p>
<p>If both <em class="parameter"><code>select</code></em>
and <em class="parameter"><code>item_id</code></em>
are NULL, only a skeleton request is created and calls to
<a class="link" href="lasso-LassoDataService.html#lasso-data-service-add-query-item" title="lasso_data_service_add_query_item ()"><code class="function">lasso_data_service_add_query_item()</code></a> will need to be done.</p>
<div class="refsect3">
<a name="lasso-data-service-init-query.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>service</p></td>
<td class="parameter_description"><p>a <a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>select</p></td>
<td class="parameter_description"><p>resource selection string (typically a XPath query)</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>item_id</p></td>
<td class="parameter_description"><p>query item identifier (optional). </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>security_mech_id</p></td>
<td class="parameter_description"><p>a security mechanism id. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="lasso-data-service-init-query.returns"></a><h4>Returns</h4>
<p> 0 on success; or a negative value otherwise.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="lasso-data-service-add-query-item"></a><h3>lasso_data_service_add_query_item ()</h3>
<pre class="programlisting"><span class="returnvalue">lasso_error_t</span>
lasso_data_service_add_query_item (<em class="parameter"><code><a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> *service</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *select</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *item_id</code></em>);</pre>
<p>Adds a dst:QueryItem to the current dst:Query request. If there are already query item in the
request and <em class="parameter"><code>itemId</code></em>
is NULL, the call will fail.</p>
<div class="refsect3">
<a name="lasso-data-service-add-query-item.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>service</p></td>
<td class="parameter_description"><p>a <a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>select</p></td>
<td class="parameter_description"><p>resource selection string (typically a XPath query)</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>item_id</p></td>
<td class="parameter_description"><p>query item identifier</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="lasso-data-service-add-query-item.returns"></a><h4>Returns</h4>
<p> 0 if sucessfull, an error code otherwise.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="lasso-data-service-build-modify-response-msg"></a><h3>lasso_data_service_build_modify_response_msg ()</h3>
<pre class="programlisting"><span class="returnvalue">lasso_error_t</span>
lasso_data_service_build_modify_response_msg
(<em class="parameter"><code><a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> *service</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="lasso-data-service-build-response-msg"></a><h3>lasso_data_service_build_response_msg ()</h3>
<pre class="programlisting"><span class="returnvalue">lasso_error_t</span>
lasso_data_service_build_response_msg (<em class="parameter"><code><a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> *service</code></em>);</pre>
<p>Builds a dst:QueryResponse message.</p>
<div class="refsect3">
<a name="lasso-data-service-build-response-msg.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>service</p></td>
<td class="parameter_description"><p>a <a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="lasso-data-service-build-response-msg.returns"></a><h4>Returns</h4>
<p> 0 on success; or a negative value otherwise.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="lasso-data-service-process-query-response-msg"></a><h3>lasso_data_service_process_query_response_msg ()</h3>
<pre class="programlisting"><span class="returnvalue">lasso_error_t</span>
lasso_data_service_process_query_response_msg
(<em class="parameter"><code><a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> *service</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *message</code></em>);</pre>
<p>Processes a dst:Query message. Rebuilds a request object from the message
and extracts ResourcedID.</p>
<div class="refsect3">
<a name="lasso-data-service-process-query-response-msg.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>service</p></td>
<td class="parameter_description"><p>a <a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>message</p></td>
<td class="parameter_description"><p>the dst query response message</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="lasso-data-service-process-query-response-msg.returns"></a><h4>Returns</h4>
<p> 0 on success; or a negative value otherwise.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="lasso-data-service-get-answer"></a><h3>lasso_data_service_get_answer ()</h3>
<pre class="programlisting"><span class="returnvalue">lasso_error_t</span>
lasso_data_service_get_answer (<em class="parameter"><code><a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> *service</code></em>,
<em class="parameter"><code><span class="type">xmlNode</span> **output</code></em>);</pre>
<p>Get the first xmlNode of the first Data element of the QueryResponse message.</p>
<div class="refsect3">
<a name="lasso-data-service-get-answer.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>service</p></td>
<td class="parameter_description"><p>a <a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> object.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>output</p></td>
<td class="parameter_description"><p>an xmlNode** pointer where to put the xmlNode* of the result. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="lasso-data-service-get-answer.returns"></a><h4>Returns</h4>
<p> 0 if sucessful, an error code otherwise.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="lasso-data-service-get-answers"></a><h3>lasso_data_service_get_answers ()</h3>
<pre class="programlisting"><span class="returnvalue">lasso_error_t</span>
lasso_data_service_get_answers (<em class="parameter"><code><a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> *service</code></em>,
<em class="parameter"><code><span class="type">GList</span> **output</code></em>);</pre>
<p>Get all the xmlNode content of the first Data element of the QueryResponse message.</p>
<div class="refsect3">
<a name="lasso-data-service-get-answers.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>service</p></td>
<td class="parameter_description"><p>a <a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> object.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>output</p></td>
<td class="parameter_description"><p>an xmlNode** pointer where to put the xmlNode* of the result. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> xmlNode]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="lasso-data-service-get-answers.returns"></a><h4>Returns</h4>
<p> 0 if sucessful, an error code otherwise.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="lasso-data-service-get-answers-by-select"></a><h3>lasso_data_service_get_answers_by_select ()</h3>
<pre class="programlisting"><span class="returnvalue">lasso_error_t</span>
lasso_data_service_get_answers_by_select
(<em class="parameter"><code><a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> *service</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *select</code></em>,
<em class="parameter"><code><span class="type">GList</span> **output</code></em>);</pre>
<p>Returns the answers for the specified <em class="parameter"><code>select</code></em>
request.</p>
<div class="refsect3">
<a name="lasso-data-service-get-answers-by-select.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>service</p></td>
<td class="parameter_description"><p>a <a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>select</p></td>
<td class="parameter_description"><p>resource selection string (typically a XPath query)</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>output</p></td>
<td class="parameter_description"><p>a GList** to store a GList* containing the result, it must be freed. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> xmlNode]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="lasso-data-service-get-answers-by-select.returns"></a><h4>Returns</h4>
<p> 0 if successful, an error code otheriwse</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="lasso-data-service-get-answers-by-item-id"></a><h3>lasso_data_service_get_answers_by_item_id ()</h3>
<pre class="programlisting"><span class="returnvalue">lasso_error_t</span>
lasso_data_service_get_answers_by_item_id
(<em class="parameter"><code><a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> *service</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *item_id</code></em>,
<em class="parameter"><code><span class="type">GList</span> **output</code></em>);</pre>
<p>Returns the answers for the specified <em class="parameter"><code>itemID</code></em>
request.</p>
<div class="refsect3">
<a name="lasso-data-service-get-answers-by-item-id.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>service</p></td>
<td class="parameter_description"><p>a <a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>item_id</p></td>
<td class="parameter_description"><p>query item identifier</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>output</p></td>
<td class="parameter_description"><p>a GList** to store a GList* containing the result, it must be freed. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> xmlNode]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="lasso-data-service-get-answers-by-item-id.returns"></a><h4>Returns</h4>
<p> 0 if successful, an error code otherwise</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="lasso-data-service-init-modify"></a><h3>lasso_data_service_init_modify ()</h3>
<pre class="programlisting"><span class="returnvalue">lasso_error_t</span>
lasso_data_service_init_modify (<em class="parameter"><code><a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> *service</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *security_mech_id</code></em>);</pre>
<p>Initialize a Data Service Template Modify request using a command to select some data, and an XML
fragment to replace the selected data.</p>
<div class="refsect3">
<a name="lasso-data-service-init-modify.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>service</p></td>
<td class="parameter_description"><p>a <a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>security_mech_id</p></td>
<td class="parameter_description"><p>a security mechanism id. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="lasso-data-service-init-modify.returns"></a><h4>Returns</h4>
<p> 0 if successful, an error code otherwise.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="lasso-data-service-add-modification"></a><h3>lasso_data_service_add_modification ()</h3>
<pre class="programlisting"><span class="returnvalue">lasso_error_t</span>
lasso_data_service_add_modification (<em class="parameter"><code><a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> *service</code></em>,
<em class="parameter"><code>const <span class="type">gchar</span> *select</code></em>,
<em class="parameter"><code><span class="type">xmlNode</span> *xmlData</code></em>,
<em class="parameter"><code><span class="type">gboolean</span> overrideAllowed</code></em>,
<em class="parameter"><code><span class="type">time_t</span> *notChangedSince</code></em>,
<em class="parameter"><code><a class="link" href="lasso-LassoDstModification.html#LassoDstModification" title="struct LassoDstModification"><span class="type">LassoDstModification</span></a> **output</code></em>);</pre>
<p>Add a new modification to the current modify request. If overrideAllowed is FALSE, xmlData must
absolutely be present. Refer to the ID-WSF DST 1.0 specification for the semantic of the created
message.</p>
<div class="refsect3">
<a name="lasso-data-service-add-modification.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>service</p></td>
<td class="parameter_description"><p>a <a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>select</p></td>
<td class="parameter_description"><p>a selector string</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>xmlData</p></td>
<td class="parameter_description"><p>optional NewData content. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>overrideAllowed</p></td>
<td class="parameter_description"><p>whether to permit delete or replace of existings. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>][<acronym title="Default parameter value (for in case the shadows-to function has less parameters)."><span class="acronym">default</span></acronym> FALSE]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>notChangedSince</p></td>
<td class="parameter_description"><p>if not NULL, give the time (as a local time_t value) of the last known
modification to the datas, it is used to permit secure concurrent accesses. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>output</p></td>
<td class="parameter_description"><p>a <a class="link" href="lasso-LassoDstModification.html#LassoDstModification" title="struct LassoDstModification"><span class="type">LassoDstModification</span></a>** pointer where to put the <a class="link" href="lasso-LassoDstModification.html#LassoDstModification" title="struct LassoDstModification"><span class="type">LassoDstModification</span></a> of the result. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="lasso-data-service-add-modification.returns"></a><h4>Returns</h4>
<p> 0 if successful and the new modification object in *output, an error code
otherwise.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="lasso-data-service-process-modify-response-msg"></a><h3>lasso_data_service_process_modify_response_msg ()</h3>
<pre class="programlisting"><span class="returnvalue">lasso_error_t</span>
lasso_data_service_process_modify_response_msg
(<em class="parameter"><code><a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> *service</code></em>,
<em class="parameter"><code>const <span class="type">gchar</span> *soap_msg</code></em>);</pre>
<p>Process a modify response message.</p>
<div class="refsect3">
<a name="lasso-data-service-process-modify-response-msg.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>service</p></td>
<td class="parameter_description"><p>a <a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>soap_msg</p></td>
<td class="parameter_description"><p>the SOAP message</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="lasso-data-service-process-modify-response-msg.returns"></a><h4>Returns</h4>
<p> 0 on success; or a negative value otherwise.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="lasso-data-service-process-request-msg"></a><h3>lasso_data_service_process_request_msg ()</h3>
<pre class="programlisting"><span class="returnvalue">lasso_error_t</span>
lasso_data_service_process_request_msg
(<em class="parameter"><code><a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> *service</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *message</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *security_mech_id</code></em>);</pre>
<div class="refsect3">
<a name="lasso-data-service-process-request-msg.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>service</p></td>
<td class="parameter_description"><p>a <a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>message</p></td>
<td class="parameter_description"><p>a C string containing the SOAP request</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>security_mech_id</p></td>
<td class="parameter_description"><p>a C string describing the required security mechanism or NULL. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="lasso-data-service-process-request-msg.returns"></a><h4>Returns</h4>
<p> 0 if successfull, an error code otherwise.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="lasso-data-service-validate-request"></a><h3>lasso_data_service_validate_request ()</h3>
<pre class="programlisting"><span class="returnvalue">lasso_error_t</span>
lasso_data_service_validate_request (<em class="parameter"><code><a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> *service</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="lasso-data-service-build-query-response-msg"></a><h3>lasso_data_service_build_query_response_msg ()</h3>
<pre class="programlisting"><span class="returnvalue">lasso_error_t</span>
lasso_data_service_build_query_response_msg
(<em class="parameter"><code><a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> *service</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="lasso-data-service-get-query-item"></a><h3>lasso_data_service_get_query_item ()</h3>
<pre class="programlisting"><span class="returnvalue">lasso_error_t</span>
lasso_data_service_get_query_item (<em class="parameter"><code><a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> *service</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *select</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *item_id</code></em>,
<em class="parameter"><code><a class="link" href="lasso-LassoDstQueryItem.html#LassoDstQueryItem" title="struct LassoDstQueryItem"><span class="type">LassoDstQueryItem</span></a> **output</code></em>);</pre>
<p>Look up the first query item in the current request matching the given criteria, <em class="parameter"><code>select</code></em>
or
<em class="parameter"><code>item_id</code></em>
. At least one of the criteria must be present for the call to succeed.</p>
<div class="refsect3">
<a name="lasso-data-service-get-query-item.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>service</p></td>
<td class="parameter_description"><p>a <a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>select</p></td>
<td class="parameter_description"><p>the select string of the query item to found</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>item_id</p></td>
<td class="parameter_description"><p>the item id of the query item to found</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>output</p></td>
<td class="parameter_description"><p>a <a class="link" href="lasso-LassoDstQueryItem.html#LassoDstQueryItem" title="struct LassoDstQueryItem"><span class="type">LassoDstQueryItem</span></a> handle to store the result object, its reference count is not
incremented. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="lasso-data-service-get-query-item.returns"></a><h4>Returns</h4>
<p> 0 if successful, an error code otherwise.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="lasso-data-service-set-resource-data"></a><h3>lasso_data_service_set_resource_data ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
lasso_data_service_set_resource_data (<em class="parameter"><code><a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> *service</code></em>,
<em class="parameter"><code>const <span class="type">xmlNode</span> *resource_data</code></em>);</pre>
<p>Set the resource data content.</p>
<div class="refsect3">
<a name="lasso-data-service-set-resource-data.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>service</p></td>
<td class="parameter_description"><p>a <a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>resource_data</p></td>
<td class="parameter_description"><p>an xmlnode representing the resource data of the service. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="lasso-data-service-get-resource-data"></a><h3>lasso_data_service_get_resource_data ()</h3>
<pre class="programlisting"><span class="returnvalue">xmlNode</span> *
lasso_data_service_get_resource_data (<em class="parameter"><code><a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> *service</code></em>);</pre>
<p>Return the XML resrouce data in this data service.</p>
<div class="refsect3">
<a name="lasso-data-service-get-resource-data.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>service</p></td>
<td class="parameter_description"><p>a <a class="link" href="lasso-LassoDataService.html#LassoDataService" title="struct LassoDataService"><span class="type">LassoDataService</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="lasso-data-service-get-resource-data.returns"></a><h4>Returns</h4>
<p>a newly allocated <span class="type">xmlNode</span> or NULL. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></p>
</div>
</div>
</div>
<div class="refsect1">
<a name="lasso-LassoDataService.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="LassoDataService"></a><h3>struct LassoDataService</h3>
<pre class="programlisting">struct LassoDataService {
LassoWsfProfile parent;
};
</pre>
</div>
</div>
</div>
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