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rasqal_data_graph *
rasqal_new_data_graph_from_data_graph (rasqal_data_graph *dg);
Copy Constructor - create a new rasqal_data_graph object from an existing rasqal_data_graph object.
rasqal_data_graph * rasqal_new_data_graph_from_iostream (rasqal_world *world,raptor_iostream *iostr,raptor_uri *base_uri,raptor_uri *name_uri,unsigned int flags,const char *format_type,const char *format_name,raptor_uri *format_uri);
Constructor - create a new rasqal_data_graph from iostream content
The name_uri
is used when the flags are RASQAL_DATA_GRAPH_NAMED.
The base_uri
is used to provide the Raptor parser a base URI. If
a base URI is required but none is given, the parsing will fail
and the query that uses this data source will fail.
world |
rasqal_world object |
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iostr |
source graph format iostream |
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base_uri |
base URI for iostream content |
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name_uri |
name of graph (or NULL) |
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flags |
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format_type |
MIME Type of data format at |
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format_name |
Raptor parser Name of data format at |
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format_uri |
URI of data format at |
rasqal_data_graph * rasqal_new_data_graph_from_uri (rasqal_world *world,raptor_uri *uri,raptor_uri *name_uri,unsigned int flags,const char *format_type,const char *format_name,raptor_uri *format_uri);
Constructor - create a new rasqal_data_graph.
The name_uri is only used when the flags are RASQAL_DATA_GRAPH_NAMED.
void
rasqal_free_data_graph (rasqal_data_graph *dg);
Destructor - destroy a rasqal_data_graph object.
int rasqal_data_graph_print (rasqal_data_graph *dg,FILE *fh);
Print a Rasqal data graph in a debug format.
The print debug format may change in any release.
typedef struct {
rasqal_world* world;
raptor_uri* uri;
raptor_uri* name_uri;
unsigned int flags;
char* format_type;
char* format_name;
raptor_uri* format_uri;
raptor_iostream* iostr;
raptor_uri* base_uri;
int usage;
} rasqal_data_graph;
A source of RDF data for querying.
If iostr
is present, the graph can be constructed by parsing the
iostream and using base_uri
as a base uri. Otherwise the graph
can be constructed from the graph at URI uri
.
In either case the name_uri
is the graph name as long as flags
is RASQAL_DATA_GRAPH_NAMED
rasqal_world * |
rasqal_world object |
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raptor_uri * |
source URI |
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raptor_uri * |
name of graph for |
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MIME Type of data format at |
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Raptor parser Name of data format at |
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raptor_uri * |
URI of data format at |
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raptor_iostream * |
Raptor iostream for content, overriding |
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raptor_uri * |
base URI for reading from iostream |
|
usage count of this object |
Flags for the type of rasqal_data_graph.
These are used by rasqal_new_data_graph_from_uri() and
rasqal_new_data_graph_from_iostream(). See rasqal_data_graph.