Prefixes

Prefixes — XML QName-style prefixes made from a URI and a short text prefix.

Synopsis

                    rasqal_prefix;
rasqal_prefix *     rasqal_new_prefix                   (rasqal_world *world,
                                                         const unsigned char *prefix,
                                                         raptor_uri *uri);
void                rasqal_free_prefix                  (rasqal_prefix *p);
int                 rasqal_prefix_print                 (rasqal_prefix *p,
                                                         FILE *fh);

Description

Used inside a rasqal_query to declare syntax prefix abbreviations for URIs. Once a rasqal_query is constructed, these are for information only.

Details

rasqal_prefix

typedef struct {
  rasqal_world* world;
  const char * prefix;
  raptor_uri* uri;
  int declared;
  int depth;
} rasqal_prefix;

Namespace (prefix, uri) pair.

Includes internal flags used for marking when prefixes are declared and at what XML element depth when used in XML formats.

rasqal_world *`world`;	rasqal_world object
const char *`prefix`;	short prefix string
raptor_uri *`uri`;	URI associated with the prefix.
int `declared`;	Internal flag.
int `depth`;	Internal flag.

rasqal_new_prefix ()

rasqal_prefix *     rasqal_new_prefix                   (rasqal_world *world,
                                                         const unsigned char *prefix,
                                                         raptor_uri *uri);

Constructor - create a new rasqal_prefix. Takes ownership of prefix and uri.

`world` :	rasqal_world object
`prefix` :	Short prefix string to stand for URI (or NULL)
`uri` :	Name raptor_uri.
Returns :	a new rasqal_prefix or NULL on failure.

rasqal_free_prefix ()

void                rasqal_free_prefix                  (rasqal_prefix *p);

Destructor - destroy a rasqal_prefix object.

p :

rasqal_prefix object.

rasqal_prefix_print ()

int                 rasqal_prefix_print                 (rasqal_prefix *p,
                                                         FILE *fh);

Print a Rasqal prefix in a debug format.

The print debug format may change in any release.

`p` :	rasqal_prefix object.
`fh` :	The FILE* handle to print to.
Returns :	non-0 on failure

			Rasqal RDF Query Library Manual
Top \| Description