<?php
-
+/**********************************************************************
+ Copyright (C) FrontAccounting, LLC.
+ Released under the terms of the GNU General Public License, GPL,
+ as published by the Free Software Foundation, either version 3
+ of the License, or (at your option) any later version.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ 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.
+//
+$transaction_level = 0;
function begin_transaction()
{
- db_query("BEGIN", "could not start a transaction");
+ global $transaction_level;
+
+ if (!$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");
+ }
+ $transaction_level = 0;
+}
+
+//-----------------------------------------------------------------------------
+// Update record activity status.
+//
+function update_record_status($id, $status, $table, $key) {
+ $sql = "UPDATE ".TB_PREF.$table." SET inactive = "
+ . ((int)$status)." WHERE $key=".db_escape($id);
+
+ db_query($sql, "Can't update record status");
+}
+//-----------------------------------------------------------------------------
+//
+// Helper for sql subquery returning running totals from delta tables like stock_moves or bank_trans
+//
+// $table - table name with optional WHERE clause
+// $column - delta column
+// $index - comma delimited list of columns for total grouping and order
+// Returns running totals with respective index column
+//
+function running_total_sql($table, $column, $index)
+{
+
+ return "SELECT daily.$index, daily.$column, (@total:=@total+daily.$column) total
+ FROM
+ (SELECT $index, sum($column) $column FROM $table GROUP BY $index ORDER BY $index) daily,
+ (SELECT @total:=0) total_var";
}
-?>