X-Git-Url: https://delta.frontaccounting.com/gitweb/?a=blobdiff_plain;f=includes%2Fdb%2Fsql_functions.inc;h=56392e6d9fdb7eef8c2edbd838cb7517ab2d512e;hb=a001646bef2b971535791d4e67b8565684d6de24;hp=0fa479dc2b946754157a383025bd3ef93d70e234;hpb=d5f7c2099d1dc612e651722e5843329bd8314863;p=fa-stable.git

diff --git a/includes/db/sql_functions.inc b/includes/db/sql_functions.inc
index 0fa479dc..56392e6d 100644
--- a/includes/db/sql_functions.inc
+++ b/includes/db/sql_functions.inc
@@ -12,28 +12,122 @@
 //
 //	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";
+}
+
+/*
+	Return number of records in tables, where some foreign key $id is used.
+	$id - searched key value
+	$tables - array of table names (without prefix); when table name is used as a key, then
+		value is name of foreign key field. For numeric keys $stdkey field name is used.
+	$stdkey - standard name of foreign key.
+*/
+function key_in_foreign_table($id, $tables, $stdkey)
+{
+
+	if (!is_array($tables))
+		$tables = array($tables);
+
+	$sqls = array();
+	foreach ($tables as $tbl => $key) {
+		if (is_numeric($tbl)) {
+			$tbl = $key;
+			$key = $stdkey;
+		}
+		$sqls[] = "(SELECT COUNT(*) as cnt FROM `".TB_PREF."$tbl` WHERE `$key`=".db_escape($id).")\n";
+	}
+
+	$sql = "SELECT sum(cnt) FROM (". implode(' UNION ', $sqls).") as counts";
+
+	$result = db_query($sql, "check relations for ".implode(',',$tables)." failed");
+	$count = db_fetch($result);
+
+	return $count[0];
+}
+