/**
* return regex fragment that can be used to match databases type to enum types
*/
public static function enum_regex($db_doc)
{
// enum_type_regex_expression is cached, this function is called a whole lot
if ($db_doc !== NULL && self::$enum_type_regex_expression === NULL) {
self::$enum_type_regex_expression = '';
$enum_type_names = array();
$schemas =& dbx::get_schemas($db_doc);
foreach ($schemas as $schema) {
$types =& dbx::get_types($schema);
foreach ($types as $type) {
if (strcasecmp($type['type'], 'enum') == 0) {
$enum_type_names[] = $schema['name'] . '\\.' . $type['name'];
}
}
}
self::$enum_type_regex_expression = implode('|', $enum_type_names);
if (strlen(self::$enum_type_regex_expression) == 0) {
self::$enum_type_regex_expression = 'nevermatchyyyyyyzz';
}
}
return self::$enum_type_regex_expression;
}
