librdf_free_node ()

void                librdf_free_node                    (librdf_node *node);

Destructor - destroy an librdf_node object.

librdf_new_node ()

librdf_node *       librdf_new_node                     (librdf_world *world);

Constructor - create a new librdf_node object with a private identifier.

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.

librdf_new_node_from_blank_identifier ()

librdf_node *       librdf_new_node_from_blank_identifier
                                                        (librdf_world *world,
                                                         const unsigned char *identifier);

Constructor - create a new blank node librdf_node object from a blank node identifier.

If no identifier string is given (NULL) this creates a new internal identifier and uses it.

librdf_new_node_from_counted_blank_identifier ()

librdf_node *       librdf_new_node_from_counted_blank_identifier
                                                        (librdf_world *world,
                                                         const unsigned char *identifier,
                                                         size_t identifier_len);

Constructor - create a new blank node librdf_node object from a blank node counted length identifier.

If no identifier string is given (NULL) this creates a new internal identifier and uses it.

librdf_new_node_from_counted_uri_string ()

librdf_node *       librdf_new_node_from_counted_uri_string
                                                        (librdf_world *world,
                                                         const unsigned char *uri_string,
                                                         size_t len);

Constructor - create a new librdf_node object from a counted URI string.

librdf_new_node_from_literal ()

librdf_node *       librdf_new_node_from_literal        (librdf_world *world,
                                                         const unsigned char *string,
                                                         const char *xml_language,
                                                         int is_wf_xml);

Constructor - create a new literal librdf_node object.

0.9.12: xml_space argument deleted

An xml_language cannot be used when is_wf_xml is non-0. If both are given, NULL is returned. If xml_language is the empty string, it is the equivalent to NULL.

librdf_new_node_from_node ()

librdf_node *       librdf_new_node_from_node           (librdf_node *node);

Copy constructor - create a new librdf_node object from an existing librdf_node object.

librdf_new_node_from_normalised_uri_string ()

librdf_node *       librdf_new_node_from_normalised_uri_string
                                                        (librdf_world *world,
                                                         const unsigned char *uri_string,
                                                         librdf_uri *source_uri,
                                                         librdf_uri *base_uri);

Constructor - create a new librdf_node object from a UTF-8 encoded URI string normalised to a new base URI.

librdf_new_node_from_typed_counted_literal ()

librdf_node *       librdf_new_node_from_typed_counted_literal
                                                        (librdf_world *world,
                                                         const unsigned char *value,
                                                         size_t value_len,
                                                         const char *xml_language,
                                                         size_t xml_language_len,
                                                         librdf_uri *datatype_uri);

Constructor - create a new typed literal librdf_node object.

Takes copies of the passed in value, datatype_uri and xml_language.

Only one of xml_language or datatype_uri may be given. If both are given, NULL is returned. If xml_language is the empty string, it is the equivalent to NULL.

librdf_new_node_from_typed_literal ()

librdf_node *       librdf_new_node_from_typed_literal  (librdf_world *world,
                                                         const unsigned char *value,
                                                         const char *xml_language,
                                                         librdf_uri *datatype_uri);

Constructor - create a new typed literal librdf_node object.

Only one of xml_language or datatype_uri may be given. If both are given, NULL is returned. If xml_language is the empty string, it is the equivalent to NULL.

librdf_new_node_from_uri ()

librdf_node *       librdf_new_node_from_uri            (librdf_world *world,
                                                         librdf_uri *uri);

Constructor - create a new resource librdf_node object with a given URI.

librdf_new_node_from_uri_local_name ()

librdf_node *       librdf_new_node_from_uri_local_name (librdf_world *world,
                                                         librdf_uri *uri,
                                                         const unsigned char *local_name);

Constructor - create a new resource librdf_node object with a given URI and local name.

librdf_new_node_from_uri_string ()

librdf_node *       librdf_new_node_from_uri_string     (librdf_world *world,
                                                         const unsigned char *uri_string);

Constructor - create a new librdf_node object from a URI string.

librdf_node

typedef raptor_term librdf_node;

Redland node class.

librdf_node_decode ()

librdf_node *       librdf_node_decode                  (librdf_world *world,
                                                         size_t *size_p,
                                                         unsigned char *buffer,
                                                         size_t length);

Deserialise a node from a buffer.

Decodes the serialised node (as created by librdf_node_encode() ) from the given buffer.

librdf_node_encode ()

size_t              librdf_node_encode                  (librdf_node *node,
                                                         unsigned char *buffer,
                                                         size_t length);

Serialise a node into a buffer.

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.

If the node cannot be encoded due to restrictions of the encoding format, a redland error is generated

librdf_node_equals ()

int                 librdf_node_equals                  (librdf_node *first_node,
                                                         librdf_node *second_node);

Compare two librdf_node objects for equality.

Note - for literal nodes, XML language, XML space and well-formness are presently ignored in the comparison.

librdf_node_get_blank_identifier ()

unsigned char *     librdf_node_get_blank_identifier    (librdf_node *node);

Get the blank node identifier as a UTF-8 encoded string.

librdf_node_get_counted_blank_identifier ()

unsigned char *     librdf_node_get_counted_blank_identifier
                                                        (librdf_node *node,
                                                         size_t *len_p);

Get the blank node identifier as a counted UTF-8 encoded string.

librdf_node_get_li_ordinal ()

int                 librdf_node_get_li_ordinal          (librdf_node *node);

Get the node li object ordinal value.

librdf_node_get_literal_value ()

unsigned char *     librdf_node_get_literal_value       (librdf_node *node);

Get the literal value of the node as a UTF-8 encoded string.

Returns a pointer to the UTF-8 encoded literal value held by the node, it must be copied if it is wanted to be used by the caller.

librdf_node_get_literal_value_as_counted_string ()

unsigned char *     librdf_node_get_literal_value_as_counted_string
                                                        (librdf_node *node,
                                                         size_t *len_p);

Get the literal value of the node as a counted UTF-8 encoded string.

Returns a pointer to the UTF-8 encoded literal string value held by the node, it must be copied if it is wanted to be used by the caller.

librdf_node_get_literal_value_as_latin1 ()

char *              librdf_node_get_literal_value_as_latin1
                                                        (librdf_node *node);

Get the string literal value of the node as ISO Latin-1.

Returns a newly allocated string containing the conversion of the node literal value held by the node into ISO Latin-1. Discards characters outside the U+0000 to U+00FF range (inclusive).

librdf_node_get_literal_value_datatype_uri ()

librdf_uri *        librdf_node_get_literal_value_datatype_uri
                                                        (librdf_node *node);

Get the typed literal datatype URI of the literal node.

librdf_node_get_literal_value_is_wf_xml ()

int                 librdf_node_get_literal_value_is_wf_xml
                                                        (librdf_node *node);

Get the XML well-formness property of the node.

librdf_node_get_literal_value_language ()

char *              librdf_node_get_literal_value_language
                                                        (librdf_node *node);

Get the XML language of the node.

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. Language strings are ASCII, not UTF-8 encoded Unicode.

librdf_node_get_type ()

librdf_node_type    librdf_node_get_type                (librdf_node *node);

Get the type of the node.

See also librdf_node_is_resource(), librdf_node_is_literal() and librdf_node_is_blank() for testing individual types.

librdf_node_get_uri ()

librdf_uri *        librdf_node_get_uri                 (librdf_node *node);

Get the URI for a node object.

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.

librdf_node_is_blank ()

int                 librdf_node_is_blank                (librdf_node *node);

Check node is a blank nodeID.

librdf_node_is_literal ()

int                 librdf_node_is_literal              (librdf_node *node);

Check node is a literal.

librdf_node_is_resource ()

int                 librdf_node_is_resource             (librdf_node *node);

Check node is a resource.

librdf_node_new_static_node_iterator ()

librdf_iterator *   librdf_node_new_static_node_iterator
                                                        (librdf_world *world,
                                                         librdf_node **nodes,
                                                         int size);

Create an iterator over an array of nodes.

This creates an iterator for an existing static array of librdf_node objects. It is mostly intended for testing iterator code.

librdf_node_print ()

void                librdf_node_print                   (librdf_node *node,
                                                         FILE *fh);

Pretty print the node to a file descriptor.

This method is for debugging and the format of the output should not be relied on.

librdf_node_static_iterator_create ()

librdf_iterator *   librdf_node_static_iterator_create  (librdf_node **nodes,
                                                         int size);

Create an iterator over an array of nodes (ALWAYS FAILS)

This legacy method used to create an iterator for an existing static array of librdf_node objects. It was intended for testing iterator code.

deprecated: always returns NULL. Use librdf_node_new_static_node_iterator()

librdf_node_to_counted_string ()

unsigned char *     librdf_node_to_counted_string       (librdf_node *node,
                                                         size_t *len_p);

Format the node as a counted string in a debugging format.

Note a new string is allocated which must be freed by the caller.

Deprecated: Use librdf_node_write() to write to raptor_iostream which can be made to write to a string. Use a librdf_serializer to write proper syntax formats.

librdf_node_to_string ()

unsigned char *     librdf_node_to_string               (librdf_node *node);

Format the node as a string in a debugging format.

Note a new string is allocated which must be freed by the caller.

Deprecated: Use librdf_node_write() to write to raptor_iostream which can be made to write to a string. Use a librdf_serializer to write proper syntax formats.

enum librdf_node_type

typedef enum {
  LIBRDF_NODE_TYPE_UNKNOWN   = RAPTOR_TERM_TYPE_UNKNOWN,
  LIBRDF_NODE_TYPE_RESOURCE  = RAPTOR_TERM_TYPE_URI,
  LIBRDF_NODE_TYPE_LITERAL   = RAPTOR_TERM_TYPE_LITERAL,
  LIBRDF_NODE_TYPE_BLANK     = RAPTOR_TERM_TYPE_BLANK,
  LIBRDF_NODE_TYPE_LAST      = LIBRDF_NODE_TYPE_BLANK
} librdf_node_type;

Type of a redland node.

Better to check this with functions librdf_node_is_resource(), librdf_node_is_literal() or librdf_node_is_blank().

librdf_node_write ()

int                 librdf_node_write                   (librdf_node *node,
                                                         raptor_iostream *iostr);

Write the node to an iostream in N-Triples format.

This method can be used to write a node in a relatively readable format. To write more compact formats use a serializer to pick a syntax and serialize triples to it.