Old ineffective sql_trail superseded by new improved db_trail logging only calls...

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

diff --git a/includes/db/sql_functions.inc b/includes/db/sql_functions.inc
index 0fa479dc2b946754157a383025bd3ef93d70e234..3b4b5acd499511998fd0ef9ba80c8d6a10d355d7 100644 (file)
--- a/includes/db/sql_functions.inc
+++ b/includes/db/sql_functions.inc
@@ -12,28 +12,92 @@
 //
 //     General database functions common for all modules.
 //
-//-------------------------------------------------------------------  
-function begin_transaction()
+//-------------------------------------------------------------------
+// Multilevel transaction control.
+//
+$transaction_level = 0;
+$transaction_data = null;
+
+function begin_transaction($func=null, $args=null)
 {
-       db_query("BEGIN", "could not start a transaction");
+       global $transaction_level, $transaction_data, $SysPrefs;
+
+       if (!$transaction_level) {
+               if ($SysPrefs->db_trail) {
+                       $bt = debug_backtrace();
+                       $user = $_SESSION["wa_current_user"]->user;
+                       $transaction_data = array(
+                               'user' => $_SESSION["wa_current_user"]->user,
+                               'msg'=> basename($bt[count($bt)-1]['file']).'@'.$bt[count($bt)-1]['line'], // call start point
+                               'entry' => $func,
+                               'data' => serialize($args),
+                       );
+               }
+               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_data, $SysPrefs, $db_last_inserted_id, $db;
+
+       $transaction_level--;
+
+       if (!$transaction_level) {
+               // FIXME: if logged to table remember to preserve last_insert_id!
+               if ($SysPrefs->db_trail == 1) {
+                       $last_insert = $db_last_inserted_id;
+                       $db_last_inserted_id = mysqli_insert_id($db);   // preserve in case trail insert is done
+                       $sql = "INSERT INTO ".TB_PREF."db_trail (user, msg, entry, data) VALUES ("
+                                       ."'".$transaction_data['user']."','".$transaction_data['msg']."','".$transaction_data['entry']."',"
+                                       .db_escape($transaction_data['data']).")";
+                       db_query($sql, 'cannot log user operation');
+                       $db_last_inserted_id = $last_insert;
+               } elseif ($SysPrefs->db_trail == 2)
+                       error_log($transaction_data['msg'].'|'.$transaction_data['user'].'|'.$transaction_data['entry'].'|'.$transaction_data['data']);
+               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";
+}
+