create interface QSqlDriver::cancelQuery()

This is useful for canceling a long running sql query.
Note that it needs support from the individual drivers.

Change-Id: Ia170a70487ff4ee13c85f12bc13e62fb198617fe
Reviewed-by: Andy Shaw <andy.shaw@digia.com>
Reviewed-by: Mark Brand <mabrand@mabrand.nl>

1 files changed, 4 insertions, 1 deletions

diff --git a/src/sql/kernel/qsqldriver.h b/src/sql/kernel/qsqldriver.h
index 921e1a4993..f0176700a9 100644
--- a/src/sql/kernel/qsqldriver.h
+++ b/src/sql/kernel/qsqldriver.h
@@ -71,7 +71,7 @@ public:
     enum DriverFeature { Transactions, QuerySize, BLOB, Unicode, PreparedQueries,
                          NamedPlaceholders, PositionalPlaceholders, LastInsertId,
                          BatchOperations, SimpleLocking, LowPrecisionNumbers,
-                         EventNotifications, FinishQuery, MultipleResultSets };
+                         EventNotifications, FinishQuery, MultipleResultSets, CancelQuery };
 
     enum StatementType { WhereStatement, SelectStatement, UpdateStatement,
                          InsertStatement, DeleteStatement };
@@ -120,6 +120,9 @@ public:
     void setNumericalPrecisionPolicy(QSql::NumericalPrecisionPolicy precisionPolicy);
     QSql::NumericalPrecisionPolicy numericalPrecisionPolicy() const;
 
+public Q_SLOTS:
+    virtual bool cancelQuery();
+
 Q_SIGNALS:
     void notification(const QString &name);
     void notification(const QString &name, QSqlDriver::NotificationSource source, const QVariant &payload);