Added security policy file.

[fa-stable.git] / includes / db / sql_functions.inc

diff --git a/includes/db/sql_functions.inc b/includes/db/sql_functions.inc
index 0fa479dc2b946754157a383025bd3ef93d70e234..66a781d25d868c21286076411c8f559df3394ff4 100644 (file)
--- a/includes/db/sql_functions.inc
+++ b/includes/db/sql_functions.inc
@@ -12,28 +12,70 @@
 //
 //     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 = "
-               . db_escape($status)." WHERE $key=".db_escape($id);
+               . ((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";
+}
+