Method
TsparqlSparqlConnectionupdate
Declaration [src]
void
tracker_sparql_connection_update (
TrackerSparqlConnection* connection,
const gchar* sparql,
GCancellable* cancellable,
GError** error
)
Description [src]
Executes a SPARQL update on connection
.
This method is synchronous and will block until the update
is finished. See tracker_sparql_connection_update_async()
for an asynchronous variant.
It is recommented to consider the usage of TrackerBatch
to cluster database updates. Frequent isolated SPARQL updates
through this method will have a degraded performance in comparison.
If the query is partially built from user input or other
untrusted sources, special care is required about possible
SPARQL injection. In order to avoid it entirely, it is recommended
to use TrackerSparqlStatement
, or to build the SPARQL
input through TrackerResource
. The function
tracker_sparql_escape_string()
exists as a last resort,
but its use is not recommended.
Parameters
sparql
-
Type:
const gchar*
String containing the SPARQL update query.
The data is owned by the caller of the method. The value is a NUL terminated UTF-8 string. cancellable
-
Type:
GCancellable
Optional
GCancellable
.The argument can be NULL
.The data is owned by the caller of the method. error
-
Type:
GError **
The return location for a recoverable error.
The argument can be NULL
.If the return location is not NULL
, then you must initialize it to aNULL
GError*
.The argument will be left initialized to NULL
by the method if there are no errors.In case of error, the argument will be set to a newly allocated GError
; the caller will take ownership of the data, and be responsible for freeing it.