Method

TrackerSparqlConnectionupdate

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 function.
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 function.
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 a NULL GError*.
The argument will 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.