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GNOME Data Access 3.0 manual | |
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GdaTransactionStatus;
enum GdaTransactionIsolation;
GdaTransactionStatusEvent;
enum GdaTransactionStatusEventType;
enum GdaTransactionStatusState;
GdaTransactionStatus* gda_transaction_status_new (const gchar *name);
On any connection (as a GdaConnection object), if the database provider used by the connection
supports it, transactions may be started, committed or rolledback, or savepoints added, removed or rolledback.
These operations can be performed using Libgda's API (such as gda_connection_begin_transaction()), or directly
using some SQL on the connection (usually a "BEGIN;" command). The GdaTransactionStatus's aim is to
make it easy to keep track of all the commands which have been issued on a connection regarding transactions.
One GdaTransactionStatus object is automatically attached to a GdaConnection when a transaction is started, and
is destroyed when the transaction is finished. A pointer to this object can be fetched using
gda_connection_get_transaction_status() (beware that it should then not be modified).
typedef enum {
GDA_TRANSACTION_ISOLATION_UNKNOWN,
GDA_TRANSACTION_ISOLATION_READ_COMMITTED,
GDA_TRANSACTION_ISOLATION_READ_UNCOMMITTED,
GDA_TRANSACTION_ISOLATION_REPEATABLE_READ,
GDA_TRANSACTION_ISOLATION_SERIALIZABLE
} GdaTransactionIsolation;
typedef struct {
GdaTransactionStatus *trans;
GdaTransactionStatusEventType type;
union {
gchar *svp_name; /* save point name if this event corresponds to a new save point */
gchar *sql; /* SQL to store SQL queries in transactions */
GdaTransactionStatus *sub_trans;/* sub transaction event */
} pl;
GdaConnectionEvent *conn_event;
gpointer reserved1;
gpointer reserved2;
} GdaTransactionStatusEvent;
typedef enum {
GDA_TRANSACTION_STATUS_EVENT_SAVEPOINT,
GDA_TRANSACTION_STATUS_EVENT_SQL,
GDA_TRANSACTION_STATUS_EVENT_SUB_TRANSACTION,
} GdaTransactionStatusEventType;
typedef enum {
GDA_TRANSACTION_STATUS_STATE_OK,
GDA_TRANSACTION_STATUS_STATE_FAILED
} GdaTransactionStatusState;
GdaTransactionStatus* gda_transaction_status_new (const gchar *name);
Creates a new GdaTransactionStatus object, which allows a fine-tune and full control of transactions to be used with providers.
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name for the transaction |
Returns : |
the newly created object. |