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<a href="#id2621874" class="shortcut">Description</a></nobr></td></tr>
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<div class="refentry" lang="en">
<a name="redland-node"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
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<h2>
<a name="id2616307"></a><span class="refentrytitle">RDF term (librdf_node)</span>
</h2>
<p>RDF term (librdf_node) — RDF triple component</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<pre class="synopsis">
typedef <a href="redland-node.html#librdf-node">librdf_node</a>;
enum <a href="redland-node.html#librdf-node-type">librdf_node_type</a>;
<a href="redland-node.html#librdf-node">librdf_node</a>* <a href="redland-node.html#librdf-new-node">librdf_new_node</a> (<a href="redland-world.html#librdf-world">librdf_world</a> *world);
<a href="redland-node.html#librdf-node">librdf_node</a>* <a href="redland-node.html#librdf-new-node-from-uri-string">librdf_new_node_from_uri_string</a>
(<a href="redland-world.html#librdf-world">librdf_world</a> *world,
unsigned char *uri_string);
<a href="redland-node.html#librdf-node">librdf_node</a>* <a href="redland-node.html#librdf-new-node-from-uri">librdf_new_node_from_uri</a> (<a href="redland-world.html#librdf-world">librdf_world</a> *world,
<a href="redland-uri.html#librdf-uri">librdf_uri</a> *uri);
<a href="redland-node.html#librdf-node">librdf_node</a>* <a href="redland-node.html#librdf-new-node-from-uri-local-name">librdf_new_node_from_uri_local_name</a>
(<a href="redland-world.html#librdf-world">librdf_world</a> *world,
<a href="redland-uri.html#librdf-uri">librdf_uri</a> *uri,
unsigned char *local_name);
<a href="redland-node.html#librdf-node">librdf_node</a>* <a href="redland-node.html#librdf-new-node-from-normalised-uri-string">librdf_new_node_from_normalised_uri_string</a>
(<a href="redland-world.html#librdf-world">librdf_world</a> *world,
unsigned char *uri_string,
<a href="redland-uri.html#librdf-uri">librdf_uri</a> *source_uri,
<a href="redland-uri.html#librdf-uri">librdf_uri</a> *base_uri);
<a href="redland-node.html#librdf-node">librdf_node</a>* <a href="redland-node.html#librdf-new-node-from-literal">librdf_new_node_from_literal</a> (<a href="redland-world.html#librdf-world">librdf_world</a> *world,
unsigned char *string,
const char *xml_language,
int is_wf_xml);
<a href="redland-node.html#librdf-node">librdf_node</a>* <a href="redland-node.html#librdf-new-node-from-typed-literal">librdf_new_node_from_typed_literal</a>
(<a href="redland-world.html#librdf-world">librdf_world</a> *world,
unsigned char *value,
const char *xml_language,
<a href="redland-uri.html#librdf-uri">librdf_uri</a> *datatype_uri);
<a href="redland-node.html#librdf-node">librdf_node</a>* <a href="redland-node.html#librdf-new-node-from-typed-counted-literal">librdf_new_node_from_typed_counted_literal</a>
(<a href="redland-world.html#librdf-world">librdf_world</a> *world,
unsigned char *value,
size_t value_len,
const char *xml_language,
size_t xml_language_len,
<a href="redland-uri.html#librdf-uri">librdf_uri</a> *datatype_uri);
<a href="redland-node.html#librdf-node">librdf_node</a>* <a href="redland-node.html#librdf-new-node-from-blank-identifier">librdf_new_node_from_blank_identifier</a>
(<a href="redland-world.html#librdf-world">librdf_world</a> *world,
unsigned char *identifier);
<a href="redland-node.html#librdf-node">librdf_node</a>* <a href="redland-node.html#librdf-new-node-from-node">librdf_new_node_from_node</a> (<a href="redland-node.html#librdf-node">librdf_node</a> *node);
void <a href="redland-node.html#librdf-free-node">librdf_free_node</a> (<a href="redland-node.html#librdf-node">librdf_node</a> *node);
<a href="redland-uri.html#librdf-uri">librdf_uri</a>* <a href="redland-node.html#librdf-node-get-uri">librdf_node_get_uri</a> (<a href="redland-node.html#librdf-node">librdf_node</a> *node);
<a href="redland-node.html#librdf-node-type">librdf_node_type</a> <a href="redland-node.html#librdf-node-get-type">librdf_node_get_type</a> (<a href="redland-node.html#librdf-node">librdf_node</a> *node);
unsigned char* <a href="redland-node.html#librdf-node-get-literal-value">librdf_node_get_literal_value</a>
(<a href="redland-node.html#librdf-node">librdf_node</a> *node);
unsigned char* <a href="redland-node.html#librdf-node-get-literal-value-as-counted-string">librdf_node_get_literal_value_as_counted_string</a>
(<a href="redland-node.html#librdf-node">librdf_node</a> *node,
size_t *len_p);
char* <a href="redland-node.html#librdf-node-get-literal-value-as-latin1">librdf_node_get_literal_value_as_latin1</a>
(<a href="redland-node.html#librdf-node">librdf_node</a> *node);
char* <a href="redland-node.html#librdf-node-get-literal-value-language">librdf_node_get_literal_value_language</a>
(<a href="redland-node.html#librdf-node">librdf_node</a> *node);
int <a href="redland-node.html#librdf-node-get-literal-value-is-wf-xml">librdf_node_get_literal_value_is_wf_xml</a>
(<a href="redland-node.html#librdf-node">librdf_node</a> *node);
<a href="redland-uri.html#librdf-uri">librdf_uri</a>* <a href="redland-node.html#librdf-node-get-literal-value-datatype-uri">librdf_node_get_literal_value_datatype_uri</a>
(<a href="redland-node.html#librdf-node">librdf_node</a> *node);
int <a href="redland-node.html#librdf-node-get-li-ordinal">librdf_node_get_li_ordinal</a> (<a href="redland-node.html#librdf-node">librdf_node</a> *node);
unsigned char* <a href="redland-node.html#librdf-node-get-blank-identifier">librdf_node_get_blank_identifier</a>
(<a href="redland-node.html#librdf-node">librdf_node</a> *node);
int <a href="redland-node.html#librdf-node-is-resource">librdf_node_is_resource</a> (<a href="redland-node.html#librdf-node">librdf_node</a> *node);
int <a href="redland-node.html#librdf-node-is-literal">librdf_node_is_literal</a> (<a href="redland-node.html#librdf-node">librdf_node</a> *node);
int <a href="redland-node.html#librdf-node-is-blank">librdf_node_is_blank</a> (<a href="redland-node.html#librdf-node">librdf_node</a> *node);
size_t <a href="redland-node.html#librdf-node-encode">librdf_node_encode</a> (<a href="redland-node.html#librdf-node">librdf_node</a> *node,
unsigned char *buffer,
size_t length);
<a href="redland-node.html#librdf-node">librdf_node</a>* <a href="redland-node.html#librdf-node-decode">librdf_node_decode</a> (<a href="redland-world.html#librdf-world">librdf_world</a> *world,
size_t *size_p,
unsigned char *buffer,
size_t length);
unsigned char* <a href="redland-node.html#librdf-node-to-string">librdf_node_to_string</a> (<a href="redland-node.html#librdf-node">librdf_node</a> *node);
unsigned char* <a href="redland-node.html#librdf-node-to-counted-string">librdf_node_to_counted_string</a>
(<a href="redland-node.html#librdf-node">librdf_node</a> *node,
size_t *len_p);
void <a href="redland-node.html#librdf-node-print">librdf_node_print</a> (<a href="redland-node.html#librdf-node">librdf_node</a> *node,
FILE *fh);
int <a href="redland-node.html#librdf-node-equals">librdf_node_equals</a> (<a href="redland-node.html#librdf-node">librdf_node</a> *first_node,
<a href="redland-node.html#librdf-node">librdf_node</a> *second_node);
<a href="redland-iterator.html#librdf-iterator">librdf_iterator</a>* <a href="redland-node.html#librdf-node-static-iterator-create">librdf_node_static_iterator_create</a>
(<a href="redland-node.html#librdf-node">librdf_node</a> **nodes,
int size);
</pre>
</div>
<div class="refsect1" lang="en">
<a name="id2621874"></a><h2>Description</h2>
<p>
The (subject, predicate, object) parts of an RDF triple.
</p>
</div>
<div class="refsect1" lang="en">
<a name="id2621891"></a><h2>Details</h2>
<div class="refsect2" lang="en">
<a name="id2621902"></a><h3>
<a name="librdf-node"></a>librdf_node</h3>
<a class="indexterm" name="id2621914"></a><pre class="programlisting">typedef struct librdf_node_s librdf_node;
</pre>
<p>
Redland node class.</p>
<p>
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2621933"></a><h3>
<a name="librdf-node-type"></a>enum librdf_node_type</h3>
<a class="indexterm" name="id2621946"></a><pre class="programlisting">typedef enum {
LIBRDF_NODE_TYPE_UNKNOWN = 0, /* To catch uninitialised nodes */
LIBRDF_NODE_TYPE_RESOURCE = 1, /* rdf:Resource (& rdf:Property) - has a URI */
LIBRDF_NODE_TYPE_LITERAL = 2, /* rdf:Literal - has an XML string, language, XML space */
/* node type 3 is unused at present. Do not renumber this list. */
LIBRDF_NODE_TYPE_BLANK = 4, /* blank node has an identifier string */
LIBRDF_NODE_TYPE_LAST = LIBRDF_NODE_TYPE_BLANK
} librdf_node_type;
</pre>
<p>
Type of a redland node.
</p>
<p>
Better to check this with functions <a href="redland-node.html#librdf-node-is-resource"><code class="function">librdf_node_is_resource()</code></a>,
<a href="redland-node.html#librdf-node-is-literal"><code class="function">librdf_node_is_literal()</code></a> or <a href="redland-node.html#librdf-node-is-blank"><code class="function">librdf_node_is_blank()</code></a>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><a name="LIBRDF-NODE-TYPE-UNKNOWN:CAPS"></a><code class="literal">LIBRDF_NODE_TYPE_UNKNOWN</code></span></td>
<td> Internal
</td>
</tr>
<tr>
<td><span class="term"><a name="LIBRDF-NODE-TYPE-RESOURCE:CAPS"></a><code class="literal">LIBRDF_NODE_TYPE_RESOURCE</code></span></td>
<td> rdf:Resource (& rdf:Property) - has a URI
</td>
</tr>
<tr>
<td><span class="term"><a name="LIBRDF-NODE-TYPE-LITERAL:CAPS"></a><code class="literal">LIBRDF_NODE_TYPE_LITERAL</code></span></td>
<td> rdf:Literal - has an XML string, language,
XML space
</td>
</tr>
<tr>
<td><span class="term"><a name="LIBRDF-NODE-TYPE-BLANK:CAPS"></a><code class="literal">LIBRDF_NODE_TYPE_BLANK</code></span></td>
<td> blank node has an identifier string.
</td>
</tr>
<tr>
<td><span class="term"><a name="LIBRDF-NODE-TYPE-LAST:CAPS"></a><code class="literal">LIBRDF_NODE_TYPE_LAST</code></span></td>
<td> Internal
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2622113"></a><h3>
<a name="librdf-new-node"></a>librdf_new_node ()</h3>
<a class="indexterm" name="id2622125"></a><pre class="programlisting"><a href="redland-node.html#librdf-node">librdf_node</a>* librdf_new_node (<a href="redland-world.html#librdf-world">librdf_world</a> *world);</pre>
<p>
Constructor - create a new <a href="redland-node.html#librdf-node"><span class="type">librdf_node</span></a> object with a private identifier.
</p>
<p>
Calls librdf_new_node_from_blank_identifier(world, NULL) to
construct a new redland blank node identifier and make a
new librdf_node object for it.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>world</code></em> :</span></td>
<td> redland world object
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> a new <a href="redland-node.html#librdf-node"><span class="type">librdf_node</span></a> object or NULL on failure
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2622205"></a><h3>
<a name="librdf-new-node-from-uri-string"></a>librdf_new_node_from_uri_string ()</h3>
<a class="indexterm" name="id2622218"></a><pre class="programlisting"><a href="redland-node.html#librdf-node">librdf_node</a>* librdf_new_node_from_uri_string
(<a href="redland-world.html#librdf-world">librdf_world</a> *world,
unsigned char *uri_string);</pre>
<p>
Constructor - create a new <a href="redland-node.html#librdf-node"><span class="type">librdf_node</span></a> object from a URI string.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>world</code></em> :</span></td>
<td> redland world object
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>uri_string</code></em> :</span></td>
<td> string representing a URI
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> a new <a href="redland-node.html#librdf-node"><span class="type">librdf_node</span></a> object or NULL on failure
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2619611"></a><h3>
<a name="librdf-new-node-from-uri"></a>librdf_new_node_from_uri ()</h3>
<a class="indexterm" name="id2619623"></a><pre class="programlisting"><a href="redland-node.html#librdf-node">librdf_node</a>* librdf_new_node_from_uri (<a href="redland-world.html#librdf-world">librdf_world</a> *world,
<a href="redland-uri.html#librdf-uri">librdf_uri</a> *uri);</pre>
<p>
Constructor - create a new resource <a href="redland-node.html#librdf-node"><span class="type">librdf_node</span></a> object with a given URI.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>world</code></em> :</span></td>
<td> redland world object
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>uri</code></em> :</span></td>
<td> <a href="redland-uri.html#librdf-uri"><span class="type">librdf_uri</span></a> object
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> a new <a href="redland-node.html#librdf-node"><span class="type">librdf_node</span></a> object or NULL on failure
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2619725"></a><h3>
<a name="librdf-new-node-from-uri-local-name"></a>librdf_new_node_from_uri_local_name ()</h3>
<a class="indexterm" name="id2619739"></a><pre class="programlisting"><a href="redland-node.html#librdf-node">librdf_node</a>* librdf_new_node_from_uri_local_name
(<a href="redland-world.html#librdf-world">librdf_world</a> *world,
<a href="redland-uri.html#librdf-uri">librdf_uri</a> *uri,
unsigned char *local_name);</pre>
<p>
Constructor - create a new resource <a href="redland-node.html#librdf-node"><span class="type">librdf_node</span></a> object with a given URI and local name.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>world</code></em> :</span></td>
<td> redland world object
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>uri</code></em> :</span></td>
<td> <a href="redland-uri.html#librdf-uri"><span class="type">librdf_uri</span></a> object
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>local_name</code></em> :</span></td>
<td> local name to append to URI
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> a new <a href="redland-node.html#librdf-node"><span class="type">librdf_node</span></a> object or NULL on failure
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2619864"></a><h3>
<a name="librdf-new-node-from-normalised-uri-string"></a>librdf_new_node_from_normalised_uri_string ()</h3>
<a class="indexterm" name="id2619878"></a><pre class="programlisting"><a href="redland-node.html#librdf-node">librdf_node</a>* librdf_new_node_from_normalised_uri_string
(<a href="redland-world.html#librdf-world">librdf_world</a> *world,
unsigned char *uri_string,
<a href="redland-uri.html#librdf-uri">librdf_uri</a> *source_uri,
<a href="redland-uri.html#librdf-uri">librdf_uri</a> *base_uri);</pre>
<p>
Constructor - create a new <a href="redland-node.html#librdf-node"><span class="type">librdf_node</span></a> object from a URI string normalised to a new base URI.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>world</code></em> :</span></td>
<td> redland world object
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>uri_string</code></em> :</span></td>
<td> string representing a URI
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>source_uri</code></em> :</span></td>
<td> source URI
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>base_uri</code></em> :</span></td>
<td> base URI
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> a new <a href="redland-node.html#librdf-node"><span class="type">librdf_node</span></a> object or NULL on failure
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2620018"></a><h3>
<a name="librdf-new-node-from-literal"></a>librdf_new_node_from_literal ()</h3>
<a class="indexterm" name="id2620031"></a><pre class="programlisting"><a href="redland-node.html#librdf-node">librdf_node</a>* librdf_new_node_from_literal (<a href="redland-world.html#librdf-world">librdf_world</a> *world,
unsigned char *string,
const char *xml_language,
int is_wf_xml);</pre>
<p>
Constructor - create a new literal <a href="redland-node.html#librdf-node"><span class="type">librdf_node</span></a> object.
</p>
<p>
0.9.12: xml_space argument deleted
</p>
<p>
An <em class="parameter"><code>xml_language</code></em> cannot be used when <em class="parameter"><code>is_wf_xml</code></em> is non-0. If both
are given, NULL is returned. If <em class="parameter"><code>xml_language</code></em> is the empty string,
it is the equivalent to NULL.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>world</code></em> :</span></td>
<td> redland world object
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>string</code></em> :</span></td>
<td> literal string value
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>xml_language</code></em> :</span></td>
<td> literal XML language (or NULL, empty string)
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>is_wf_xml</code></em> :</span></td>
<td> non 0 if literal is XML
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> new <a href="redland-node.html#librdf-node"><span class="type">librdf_node</span></a> object or NULL on failure
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2620197"></a><h3>
<a name="librdf-new-node-from-typed-literal"></a>librdf_new_node_from_typed_literal ()</h3>
<a class="indexterm" name="id2620211"></a><pre class="programlisting"><a href="redland-node.html#librdf-node">librdf_node</a>* librdf_new_node_from_typed_literal
(<a href="redland-world.html#librdf-world">librdf_world</a> *world,
unsigned char *value,
const char *xml_language,
<a href="redland-uri.html#librdf-uri">librdf_uri</a> *datatype_uri);</pre>
<p>
Constructor - create a new typed literal <a href="redland-node.html#librdf-node"><span class="type">librdf_node</span></a> object.
</p>
<p>
Only one of <em class="parameter"><code>xml_language</code></em> or <em class="parameter"><code>datatype_uri</code></em> may be given. If both
are given, NULL is returned. If <em class="parameter"><code>xml_language</code></em> is the empty string,
it is the equivalent to NULL.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>world</code></em> :</span></td>
<td> redland world object
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>value</code></em> :</span></td>
<td> literal string value
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>xml_language</code></em> :</span></td>
<td> literal XML language (or NULL, empty string)
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>datatype_uri</code></em> :</span></td>
<td> URI of typed literal datatype or NULL
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> new <a href="redland-node.html#librdf-node"><span class="type">librdf_node</span></a> object or NULL on failure
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2620375"></a><h3>
<a name="librdf-new-node-from-typed-counted-literal"></a>librdf_new_node_from_typed_counted_literal ()</h3>
<a class="indexterm" name="id2620389"></a><pre class="programlisting"><a href="redland-node.html#librdf-node">librdf_node</a>* librdf_new_node_from_typed_counted_literal
(<a href="redland-world.html#librdf-world">librdf_world</a> *world,
unsigned char *value,
size_t value_len,
const char *xml_language,
size_t xml_language_len,
<a href="redland-uri.html#librdf-uri">librdf_uri</a> *datatype_uri);</pre>
<p>
Constructor - create a new typed literal <a href="redland-node.html#librdf-node"><span class="type">librdf_node</span></a> object.
</p>
<p>
Only one of <em class="parameter"><code>xml_language</code></em> or <em class="parameter"><code>datatype_uri</code></em> may be given. If both
are given, NULL is returned. If <em class="parameter"><code>xml_language</code></em> is the empty string,
it is the equivalent to NULL.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>world</code></em> :</span></td>
<td> redland world object
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>value</code></em> :</span></td>
<td> literal string value
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>value_len</code></em> :</span></td>
<td> literal string value length
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>xml_language</code></em> :</span></td>
<td> literal XML language (or NULL, empty string)
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>xml_language_len</code></em> :</span></td>
<td> literal XML language length (not used if <em class="parameter"><code>xml_language</code></em> is NULL)
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>datatype_uri</code></em> :</span></td>
<td> URI of typed literal datatype or NULL
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> new <a href="redland-node.html#librdf-node"><span class="type">librdf_node</span></a> object or NULL on failure
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2620602"></a><h3>
<a name="librdf-new-node-from-blank-identifier"></a>librdf_new_node_from_blank_identifier ()</h3>
<a class="indexterm" name="id2620616"></a><pre class="programlisting"><a href="redland-node.html#librdf-node">librdf_node</a>* librdf_new_node_from_blank_identifier
(<a href="redland-world.html#librdf-world">librdf_world</a> *world,
unsigned char *identifier);</pre>
<p>
Constructor - create a new blank node <a href="redland-node.html#librdf-node"><span class="type">librdf_node</span></a> object from a blank node identifier.
</p>
<p>
If no identifier string is given, creates a new internal identifier
and assigns it.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>world</code></em> :</span></td>
<td> redland world object
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>identifier</code></em> :</span></td>
<td> blank node identifier or NULL
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> new <a href="redland-node.html#librdf-node"><span class="type">librdf_node</span></a> object or NULL on failure
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2620719"></a><h3>
<a name="librdf-new-node-from-node"></a>librdf_new_node_from_node ()</h3>
<a class="indexterm" name="id2620731"></a><pre class="programlisting"><a href="redland-node.html#librdf-node">librdf_node</a>* librdf_new_node_from_node (<a href="redland-node.html#librdf-node">librdf_node</a> *node);</pre>
<p>
Copy constructor - create a new librdf_node object from an existing librdf_node object.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>node</code></em> :</span></td>
<td> <a href="redland-node.html#librdf-node"><span class="type">librdf_node</span></a> object to copy
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> a new <a href="redland-node.html#librdf-node"><span class="type">librdf_node</span></a> object or NULL on failure
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2620806"></a><h3>
<a name="librdf-free-node"></a>librdf_free_node ()</h3>
<a class="indexterm" name="id2620818"></a><pre class="programlisting">void librdf_free_node (<a href="redland-node.html#librdf-node">librdf_node</a> *node);</pre>
<p>
Destructor - destroy an <a href="redland-node.html#librdf-node"><span class="type">librdf_node</span></a> object.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><span class="term"><em class="parameter"><code>node</code></em> :</span></td>
<td> <a href="redland-node.html#librdf-node"><span class="type">librdf_node</span></a> object
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2620882"></a><h3>
<a name="librdf-node-get-uri"></a>librdf_node_get_uri ()</h3>
<a class="indexterm" name="id2620894"></a><pre class="programlisting"><a href="redland-uri.html#librdf-uri">librdf_uri</a>* librdf_node_get_uri (<a href="redland-node.html#librdf-node">librdf_node</a> *node);</pre>
<p>
Get the URI for a node object.
</p>
<p>
Returns a pointer to the URI object held by the node, it must be
copied if it is wanted to be used by the caller.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>node</code></em> :</span></td>
<td> the node object
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> URI object or NULL if node has no URI.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2620961"></a><h3>
<a name="librdf-node-get-type"></a>librdf_node_get_type ()</h3>
<a class="indexterm" name="id2620972"></a><pre class="programlisting"><a href="redland-node.html#librdf-node-type">librdf_node_type</a> librdf_node_get_type (<a href="redland-node.html#librdf-node">librdf_node</a> *node);</pre>
<p>
Get the type of the node.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>node</code></em> :</span></td>
<td> the node object
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> the node type
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2621032"></a><h3>
<a name="librdf-node-get-literal-value"></a>librdf_node_get_literal_value ()</h3>
<a class="indexterm" name="id2621045"></a><pre class="programlisting">unsigned char* librdf_node_get_literal_value
(<a href="redland-node.html#librdf-node">librdf_node</a> *node);</pre>
<p>
Get the string literal value of the node.
</p>
<p>
Returns a pointer to the literal value held by the node, it must be
copied if it is wanted to be used by the caller.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>node</code></em> :</span></td>
<td> the node object
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> the literal string or NULL if node is not a literal
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2621115"></a><h3>
<a name="librdf-node-get-literal-value-as-counted-string"></a>librdf_node_get_literal_value_as_counted_string ()</h3>
<a class="indexterm" name="id2621129"></a><pre class="programlisting">unsigned char* librdf_node_get_literal_value_as_counted_string
(<a href="redland-node.html#librdf-node">librdf_node</a> *node,
size_t *len_p);</pre>
<p>
Get the string literal value of the node as a counted string.
</p>
<p>
Returns a pointer to the literal value held by the node, it must be
copied if it is wanted to be used by the caller.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>node</code></em> :</span></td>
<td> the node object
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>len_p</code></em> :</span></td>
<td> pointer to location to store length (or NULL)
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> the literal string or NULL if node is not a literal
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2621221"></a><h3>
<a name="librdf-node-get-literal-value-as-latin1"></a>librdf_node_get_literal_value_as_latin1 ()</h3>
<a class="indexterm" name="id2621234"></a><pre class="programlisting">char* librdf_node_get_literal_value_as_latin1
(<a href="redland-node.html#librdf-node">librdf_node</a> *node);</pre>
<p>
Get the string literal value of the node as ISO Latin-1.
</p>
<p>
Returns a newly allocated string containing the conversion of the
UTF-8 literal value held by the node.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>node</code></em> :</span></td>
<td> the node object
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> the literal string or NULL if node is not a literal
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2621303"></a><h3>
<a name="librdf-node-get-literal-value-language"></a>librdf_node_get_literal_value_language ()</h3>
<a class="indexterm" name="id2621317"></a><pre class="programlisting">char* librdf_node_get_literal_value_language
(<a href="redland-node.html#librdf-node">librdf_node</a> *node);</pre>
<p>
Get the XML language of the node.
</p>
<p>
Returns a pointer to the literal language value held by the node, it must
be copied if it is wanted to be used by the caller.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>node</code></em> :</span></td>
<td> the node object
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> the XML language string or NULL if node is not a literal
or there is no XML language defined.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2621386"></a><h3>
<a name="librdf-node-get-literal-value-is-wf-xml"></a>librdf_node_get_literal_value_is_wf_xml ()</h3>
<a class="indexterm" name="id2621400"></a><pre class="programlisting">int librdf_node_get_literal_value_is_wf_xml
(<a href="redland-node.html#librdf-node">librdf_node</a> *node);</pre>
<p>
Get the XML well-formness property of the node.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>node</code></em> :</span></td>
<td> the node object
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> 0 if the XML literal is NOT well formed XML content, or the node is not a literal
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2631797"></a><h3>
<a name="librdf-node-get-literal-value-datatype-uri"></a>librdf_node_get_literal_value_datatype_uri ()</h3>
<a class="indexterm" name="id2631811"></a><pre class="programlisting"><a href="redland-uri.html#librdf-uri">librdf_uri</a>* librdf_node_get_literal_value_datatype_uri
(<a href="redland-node.html#librdf-node">librdf_node</a> *node);</pre>
<p>
Get the typed literal datatype URI of the literal node.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>node</code></em> :</span></td>
<td> the node object
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> shared URI of the datatyped literal or NULL if the node is not a literal, or has no datatype URI
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2631868"></a><h3>
<a name="librdf-node-get-li-ordinal"></a>librdf_node_get_li_ordinal ()</h3>
<a class="indexterm" name="id2631879"></a><pre class="programlisting">int librdf_node_get_li_ordinal (<a href="redland-node.html#librdf-node">librdf_node</a> *node);</pre>
<p>
Get the node li object ordinal value.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>node</code></em> :</span></td>
<td> the node object
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> the li ordinal value or < 1 on failure
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2631935"></a><h3>
<a name="librdf-node-get-blank-identifier"></a>librdf_node_get_blank_identifier ()</h3>
<a class="indexterm" name="id2631948"></a><pre class="programlisting">unsigned char* librdf_node_get_blank_identifier
(<a href="redland-node.html#librdf-node">librdf_node</a> *node);</pre>
<p>
Get the blank node identifier.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>node</code></em> :</span></td>
<td> the node object
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> the identifier value
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2632011"></a><h3>
<a name="librdf-node-is-resource"></a>librdf_node_is_resource ()</h3>
<a class="indexterm" name="id2632022"></a><pre class="programlisting">int librdf_node_is_resource (<a href="redland-node.html#librdf-node">librdf_node</a> *node);</pre>
<p>
Check node is a resource.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>node</code></em> :</span></td>
<td> the node object
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> non-zero if the node is a resource (URI)
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2632082"></a><h3>
<a name="librdf-node-is-literal"></a>librdf_node_is_literal ()</h3>
<a class="indexterm" name="id2632094"></a><pre class="programlisting">int librdf_node_is_literal (<a href="redland-node.html#librdf-node">librdf_node</a> *node);</pre>
<p>
Check node is a literal.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>node</code></em> :</span></td>
<td> the node object
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> non-zero if the node is a literal
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2632154"></a><h3>
<a name="librdf-node-is-blank"></a>librdf_node_is_blank ()</h3>
<a class="indexterm" name="id2632165"></a><pre class="programlisting">int librdf_node_is_blank (<a href="redland-node.html#librdf-node">librdf_node</a> *node);</pre>
<p>
Check node is a blank nodeID.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>node</code></em> :</span></td>
<td> the node object
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> non-zero if the node is a blank nodeID
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2632226"></a><h3>
<a name="librdf-node-encode"></a>librdf_node_encode ()</h3>
<a class="indexterm" name="id2632238"></a><pre class="programlisting">size_t librdf_node_encode (<a href="redland-node.html#librdf-node">librdf_node</a> *node,
unsigned char *buffer,
size_t length);</pre>
<p>
Serialise a node into a buffer.
</p>
<p>
Encodes the given node in the buffer, which must be of sufficient
size. If buffer is NULL, no work is done but the size of buffer
required is returned.
</p>
<p>
If the node cannot be encoded due to restrictions of the encoding
format, a redland error is generated</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>node</code></em> :</span></td>
<td> the node to serialise
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer to use
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>length</code></em> :</span></td>
<td> buffer size
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> the number of bytes written or 0 on failure.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2632353"></a><h3>
<a name="librdf-node-decode"></a>librdf_node_decode ()</h3>
<a class="indexterm" name="id2632365"></a><pre class="programlisting"><a href="redland-node.html#librdf-node">librdf_node</a>* librdf_node_decode (<a href="redland-world.html#librdf-world">librdf_world</a> *world,
size_t *size_p,
unsigned char *buffer,
size_t length);</pre>
<p>
Deserialise a node from a buffer.
</p>
<p>
Decodes the serialised node (as created by <a href="redland-node.html#librdf-node-encode"><code class="function">librdf_node_encode()</code></a> )
from the given buffer.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>world</code></em> :</span></td>
<td> librdf_world
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>size_p</code></em> :</span></td>
<td> pointer to bytes used or NULL
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer to use
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>length</code></em> :</span></td>
<td> buffer size
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> new node or NULL on failure (bad encoding, allocation failure)
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2632472"></a><h3>
<a name="librdf-node-to-string"></a>librdf_node_to_string ()</h3>
<a class="indexterm" name="id2632482"></a><pre class="programlisting">unsigned char* librdf_node_to_string (<a href="redland-node.html#librdf-node">librdf_node</a> *node);</pre>
<p>
Format the node as a string.
</p>
<p>
Note a new string is allocated which must be freed by the caller.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>node</code></em> :</span></td>
<td> the node object
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> a string value representing the node or NULL on failure
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2632543"></a><h3>
<a name="librdf-node-to-counted-string"></a>librdf_node_to_counted_string ()</h3>
<a class="indexterm" name="id2632555"></a><pre class="programlisting">unsigned char* librdf_node_to_counted_string
(<a href="redland-node.html#librdf-node">librdf_node</a> *node,
size_t *len_p);</pre>
<p>
Format the node as a counted string.
</p>
<p>
Note a new string is allocated which must be freed by the caller.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>node</code></em> :</span></td>
<td> the node object
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>len_p</code></em> :</span></td>
<td> pointer to location to store length
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> a string value representing the node or NULL on failure
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2632637"></a><h3>
<a name="librdf-node-print"></a>librdf_node_print ()</h3>
<a class="indexterm" name="id2632647"></a><pre class="programlisting">void librdf_node_print (<a href="redland-node.html#librdf-node">librdf_node</a> *node,
FILE *fh);</pre>
<p>
Pretty print the node to a file descriptor.
</p>
<p>
This method is for debugging and the format of the output should
not be relied on.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>node</code></em> :</span></td>
<td> the node
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>fh</code></em> :</span></td>
<td> file handle
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2632715"></a><h3>
<a name="librdf-node-equals"></a>librdf_node_equals ()</h3>
<a class="indexterm" name="id2632726"></a><pre class="programlisting">int librdf_node_equals (<a href="redland-node.html#librdf-node">librdf_node</a> *first_node,
<a href="redland-node.html#librdf-node">librdf_node</a> *second_node);</pre>
<p>
Compare two librdf_node objects for equality.
</p>
<p>
Note - for literal nodes, XML language, XML space and well-formness are
presently ignored in the comparison.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>first_node</code></em> :</span></td>
<td> first <a href="redland-node.html#librdf-node"><span class="type">librdf_node</span></a> node
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>second_node</code></em> :</span></td>
<td> second <a href="redland-node.html#librdf-node"><span class="type">librdf_node</span></a> node
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> non 0 if nodes are equal. 0 if not-equal or failure
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2632818"></a><h3>
<a name="librdf-node-static-iterator-create"></a>librdf_node_static_iterator_create ()</h3>
<a class="indexterm" name="id2632831"></a><pre class="programlisting"><a href="redland-iterator.html#librdf-iterator">librdf_iterator</a>* librdf_node_static_iterator_create
(<a href="redland-node.html#librdf-node">librdf_node</a> **nodes,
int size);</pre>
<p>
Create an iterator over an array of nodes.
</p>
<p>
This creates an iterator for an existing static array of librdf_node
objects. It is mostly intended for testing iterator code.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>nodes</code></em> :</span></td>
<td> static array of <a href="redland-node.html#librdf-node"><span class="type">librdf_node</span></a> objects
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>size</code></em> :</span></td>
<td> size of array
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> a <a href="redland-iterator.html#librdf-iterator"><span class="type">librdf_iterator</span></a> serialization of the nodes or NULL on failure
</td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
</body>
</html>