improved trigger/sp updates in database versioning

bin/dbsv-update.php

@@ -47,15 +47,25 @@
 	// Now and then a maintain.php update should be inserted, because multiple
 	// mutations may be run in one batch, and future mutations may depend on
 	// changed triggers, which may not be obvious.
+	//
 	// Of course, a trigger update mutation can also be inserted directly before a
 	// mutation which needs it. (But take care that maintain.php at that point does
 	// not depend on database changes which will be done by that mutation ...)
 
 	function update_triggers()
 	{
-		global $opt;
-		echo " ";  // space for the case of a DB password prompt
-		system('php ' . $opt['rootpath'] . 'doc/sql/stored-proc/maintain.php');
+		global $opt, $db_version;
+
+		$syncfile = $opt['rootpath'] . 'cache2/dbsv-running';
+		file_put_contents($syncfile,'dbsv is running');
+
+		system('php ' . $opt['rootpath'] . 'doc/sql/stored-proc/maintain.php --dbsv '.$db_version.' --flush');
+
+		if (file_exists($syncfile))
+		{
+			die("\nmaintain.php was not properly executed\n");
+			unlink($syncfile);
+		}
 	}
 
 

htdocs/lib2/db.inc.php

@@ -31,6 +31,7 @@
 		sql_export_recordset($f, $rs)   ... export recordset to file
 		sql_export_table($f, $table)    ... export table to file
 		sql_export_table_to_file($filename, $table)
+		sql_dropFunction                ... drops stored procedure or trigger
 
 		sql_table_exists                ... tests if a table exists
 		sql_field_exists                ... tests if a table and a field in this table exist
@@ -1088,6 +1089,22 @@
 		fclose($f);
 	}
 
+	function sql_dropFunction($name)
+	{
+	  global $dbname;
+
+		$rs = sql("SHOW FUNCTION STATUS LIKE '&1'", $name);
+		while ($r = sql_fetch_assoc($rs))
+		{
+			if ($r['Db'] == $dbname && $r['Name'] == $name && $r['Type'] == 'FUNCTION')
+			{
+				sql('DROP FUNCTION `&1`', $name);
+				return;
+			}
+		}
+		sql_free_result($rs);
+	}
+
 	// test if a database table exists
 	function sql_table_exists($table)
 	{