MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License here <http://www.gnu.org/licenses/gpl-3.0.html>.
***********************************************************************/
+//
+// General database functions common for all modules.
+//
//-------------------------------------------------------------------
+// Multilevel transaction control.
+//
function begin_transaction()
{
- db_query("BEGIN", "could not start a transaction");
+ global $transaction_level; // set in set_global_connection()
+
+ if (!$transaction_level) {
+ db_query("BEGIN", "could not start a transaction");
+ }
+ $transaction_level++;
}
function commit_transaction()
{
- db_query("COMMIT", "could not commit a transaction");
+ global $transaction_level;
+
+ $transaction_level--;
+
+ if (!$transaction_level) {
+ db_query("COMMIT", "could not commit a transaction");
+ }
}
+/*
+ This function is called on end of script execution to cancel
+ all aborted transactions (if any)
+*/
function cancel_transaction()
{
- db_query("ROLLBACK", "could not cancel a transaction");
+ global $transaction_level;
+
+ if ($transaction_level) {
+ db_query("ROLLBACK", "could not cancel a transaction");
+ }
}
+//-----------------------------------------------------------------------------
+// Update record activity status.
+//
+function update_record_status($id, $status, $table, $key) {
+ $sql = "UPDATE ".TB_PREF.$table." SET inactive = "
+ . db_escape($status)." WHERE $key=".db_escape($id);
+
+ db_query($sql, "Can't update record status");
+}
?>