Literal

Literal — RDF literals and RDF query-specific literals.

Functions

rasqal_literal * rasqal_new_typed_literal ()
rasqal_literal * rasqal_new_boolean_literal ()
rasqal_literal * rasqal_new_datetime_literal_from_datetime ()
rasqal_literal * rasqal_new_decimal_literal ()
rasqal_literal * rasqal_new_decimal_literal_from_decimal ()
rasqal_literal * rasqal_new_double_literal ()
rasqal_literal * rasqal_new_float_literal ()
rasqal_literal * rasqal_new_floating_literal ()
rasqal_literal * rasqal_new_integer_literal ()
rasqal_literal * rasqal_new_numeric_literal_from_long ()
rasqal_literal * rasqal_new_pattern_literal ()
rasqal_literal * rasqal_new_simple_literal ()
rasqal_literal * rasqal_new_string_literal ()
rasqal_literal * rasqal_new_uri_literal ()
rasqal_literal * rasqal_new_variable_literal ()
rasqal_literal * rasqal_new_literal_from_literal ()
void rasqal_free_literal ()
rasqal_literal * rasqal_literal_as_node ()
const unsigned char * rasqal_literal_as_counted_string ()
const unsigned char * rasqal_literal_as_string ()
const unsigned char * rasqal_literal_as_string_flags ()
rasqal_variable * rasqal_literal_as_variable ()
int rasqal_literal_compare ()
raptor_uri * rasqal_literal_datatype ()
int rasqal_literal_equals ()
char * rasqal_literal_get_language ()
rasqal_literal_type rasqal_literal_get_rdf_term_type ()
rasqal_literal_type rasqal_literal_get_type ()
int rasqal_literal_is_rdf_literal ()
int rasqal_literal_print ()
void rasqal_literal_print_type ()
const char * rasqal_literal_type_label ()
int rasqal_literal_same_term ()
rasqal_literal * rasqal_literal_value ()

Types and Values

Description

A class for handling RDF terms (URI, blank nodes, strings, datatyped literals) as well as those natively used in a query such as boolean, double, floating, integer, regex pattern and variables.

Functions

rasqal_new_typed_literal ()

rasqal_literal *
rasqal_new_typed_literal (rasqal_world *world,
                          rasqal_literal_type type,
                          const unsigned char *string);

Returns


rasqal_new_boolean_literal ()

rasqal_literal *
rasqal_new_boolean_literal (rasqal_world *world,
                            int value);

Returns


rasqal_new_datetime_literal_from_datetime ()

rasqal_literal *
rasqal_new_datetime_literal_from_datetime
                               (rasqal_world *world,
                                rasqal_xsd_datetime *dt);

Returns


rasqal_new_decimal_literal ()

rasqal_literal *
rasqal_new_decimal_literal (rasqal_world *world,
                            const char *string);

Returns


rasqal_new_decimal_literal_from_decimal ()

rasqal_literal *
rasqal_new_decimal_literal_from_decimal
                               (rasqal_world *world,
                                const char *string,
                                rasqal_xsd_decimal *decimal);

Returns


rasqal_new_double_literal ()

rasqal_literal *
rasqal_new_double_literal (rasqal_world *world,
                           double d);

Returns


rasqal_new_float_literal ()

rasqal_literal *
rasqal_new_float_literal (rasqal_world *world,
                          float f);

rasqal_new_float_literal is deprecated and should not be used in newly-written code.

Returns


rasqal_new_floating_literal ()

rasqal_literal *
rasqal_new_floating_literal (rasqal_world *world,
                             rasqal_literal_type type,
                             double d);

Returns


rasqal_new_integer_literal ()

rasqal_literal *
rasqal_new_integer_literal (rasqal_world *world,
                            rasqal_literal_type type,
                            int integer);

Returns


rasqal_new_numeric_literal_from_long ()

rasqal_literal *
rasqal_new_numeric_literal_from_long (rasqal_world *world,
                                      rasqal_literal_type type,
                                      long value Param3);

Returns


rasqal_new_pattern_literal ()

rasqal_literal *
rasqal_new_pattern_literal (rasqal_world *world,
                            const char *pattern,
                            const char *flags);

Returns


rasqal_new_simple_literal ()

rasqal_literal *
rasqal_new_simple_literal (rasqal_world *world,
                           rasqal_literal_type type,
                           const char *string);

Returns


rasqal_new_string_literal ()

rasqal_literal *
rasqal_new_string_literal (rasqal_world *world,
                           const char *string,
                           const char *language,
                           raptor_uri *datatype,
                           const unsigned char *datatype_qname);

Returns


rasqal_new_uri_literal ()

rasqal_literal *
rasqal_new_uri_literal (rasqal_world *world,
                        raptor_uri *uri);

Returns


rasqal_new_variable_literal ()

rasqal_literal *
rasqal_new_variable_literal (rasqal_world *world,
                             rasqal_variable *variable);

Returns


rasqal_new_literal_from_literal ()

rasqal_literal *
rasqal_new_literal_from_literal (rasqal_literal *l);

Returns


rasqal_free_literal ()

void
rasqal_free_literal (rasqal_literal *l);


rasqal_literal_as_node ()

rasqal_literal *
rasqal_literal_as_node (rasqal_literal *l);

Returns


rasqal_literal_as_counted_string ()

const unsigned char *
rasqal_literal_as_counted_string (rasqal_literal *l,
                                  size_t *len_p,
                                  int flags,
                                  int *error_p);

Returns


rasqal_literal_as_string ()

const unsigned char *
rasqal_literal_as_string (rasqal_literal *l);

Returns


rasqal_literal_as_string_flags ()

const unsigned char *
rasqal_literal_as_string_flags (rasqal_literal *l,
                                int flags,
                                int *error_p);

Returns


rasqal_literal_as_variable ()

rasqal_variable *
rasqal_literal_as_variable (rasqal_literal *l);

Returns


rasqal_literal_compare ()

int
rasqal_literal_compare (rasqal_literal *l1,
                        rasqal_literal *l2,
                        int flags,
                        int *error_p);

Returns


rasqal_literal_datatype ()

raptor_uri *
rasqal_literal_datatype (rasqal_literal *l);

Returns


rasqal_literal_equals ()

int
rasqal_literal_equals (rasqal_literal *l1,
                       rasqal_literal *l2);

Returns


rasqal_literal_get_language ()

char *
rasqal_literal_get_language (rasqal_literal *l);

Returns


rasqal_literal_get_rdf_term_type ()

rasqal_literal_type
rasqal_literal_get_rdf_term_type (rasqal_literal *l);

Returns


rasqal_literal_get_type ()

rasqal_literal_type
rasqal_literal_get_type (rasqal_literal *l);

Returns


rasqal_literal_is_rdf_literal ()

int
rasqal_literal_is_rdf_literal (rasqal_literal *l);

Returns


rasqal_literal_print ()

int
rasqal_literal_print (rasqal_literal *l,
                      FILE *fh);

Returns


rasqal_literal_print_type ()

void
rasqal_literal_print_type (rasqal_literal *l,
                           FILE *fh);


rasqal_literal_type_label ()

const char *
rasqal_literal_type_label (rasqal_literal_type type);

Returns


rasqal_literal_same_term ()

int
rasqal_literal_same_term (rasqal_literal *l1,
                          rasqal_literal *l2);

Returns


rasqal_literal_value ()

rasqal_literal *
rasqal_literal_value (rasqal_literal *l);

Returns

Types and Values

rasqal_literal

typedef struct rasqal_literal_s rasqal_literal;

Rasqal literal class.


enum rasqal_literal_type

Types of literal.

The order in the enumeration is significant as it encodes the SPARQL term ordering conditions:

Blank Nodes << IRIs << RDF literals << typed literals

which coresponds to in enum values

BLANK << URI << STRING << (BOOLEAN | INTEGER | DOUBLE | FLOAT | DECIMAL | DATETIME | XSD_STRING)

(RASQAL_LITERAL_FIRST_XSD ... RASQAL_LITERAL_LAST_XSD)

Not used (internal): PATTERN, QNAME, VARIABLE

See rasqal_literal_compare() when used with flags RASQAL_COMPARE_XQUERY

Members

RASQAL_LITERAL_UNKNOWN

Internal.

 

RASQAL_LITERAL_BLANK

RDF blank node literal (SPARQL r:bNode)

 

RASQAL_LITERAL_URI

RDF URI Literal (SPARQL r:URI)

 

RASQAL_LITERAL_STRING

RDF Plain Literal - no datatype (SPARQL r:Literal)

 

RASQAL_LITERAL_XSD_STRING

String xsd:string

 

RASQAL_LITERAL_BOOLEAN

Boolean literal xsd:boolean.

 

RASQAL_LITERAL_INTEGER

Integer literal xsd:integer.

 

RASQAL_LITERAL_FLOAT

Floating point literal xsd:float.

 

RASQAL_LITERAL_DOUBLE

Double floating point literal xsd:double.

 

RASQAL_LITERAL_DECIMAL

Decimal integer xsd:decimal.

 

RASQAL_LITERAL_DATETIME

Date/Time literal xsd:dateTime.

 

RASQAL_LITERAL_FIRST_XSD

Internal.

 

RASQAL_LITERAL_LAST_XSD

Internal.

 

RASQAL_LITERAL_UDT

User defined typed literal with unknown datatype URI

 

RASQAL_LITERAL_PATTERN

Pattern literal for a regex.

 

RASQAL_LITERAL_QNAME

XML Qname literal.

 

RASQAL_LITERAL_VARIABLE

Variable literal.

 

RASQAL_LITERAL_INTEGER_SUBTYPE

Internal.

 

RASQAL_LITERAL_DATE

Date literal xsd:date.

 

RASQAL_LITERAL_LAST

Internal.