Batch

Batch

Object Hierarchy:

Description:

[ CCode ( type_id = "tracker_batch_get_type ()" ) ]
[ Version ( since = "3.1" ) ]
public abstract class Batch : Object

`TrackerBatch` executes a series of SPARQL updates and RDF data insertions within a transaction.

A batch is created with [method@SparqlConnection.create_batch]. To add resources use [method@Batch.add_resource], [ method@Batch.add_sparql] or [method@Batch.add_statement].

When a batch is ready for execution, use [method@Batch.execute] or [method@Batch.execute_async]. The batch is executed as a single transaction, it will succeed or fail entirely.

This object has a single use, after the batch is executed it can only be finished and freed.

The mapping of blank node labels is global in a `TrackerBatch`, referencing the same blank node label in different operations in a batch will resolve to the same resource.

Namespace: Tracker

Package: tracker-sparql-3.0

Content:

Properties:

public Connection connection { get; construct; }
The [class@SparqlConnection] the batch belongs to.

Creation methods:

protected Batch ()

Methods:

public void add_rdf (DeserializeFlags flags, RdfFormat format, string default_graph, InputStream stream)
Inserts the RDF data contained in stream as part of this.
public void add_resource (string? graph, Resource resource)
Adds the RDF represented by resource to this.
public void add_sparql (string sparql)
Adds an SPARQL update string to this .
public void add_statementv (Statement stmt, string[] variable_names, Value[] values)
Adds a [class@SparqlStatement] containing an SPARQL update.
public bool execute (Cancellable? cancellable = null) throws Error
Executes the batch.
public async bool execute_async (Cancellable? cancellable = null) throws Error
Executes the batch.
public unowned Connection get_connection ()
Returns the [class@SparqlConnection] that this batch was created from.

Inherited Members:

All known members inherited from class GLib.Object