public function getSchemaString($ctx=null) 
    {
      $str = "";
      if (!$ctx)
          $ctx = $this->schema->fields;

      foreach ($ctx as $f)
          $str.=$f. ",";

      return $str;
    }
public function getSchemaString($ctx=null) 
    {
      $str = "";
      if (!$ctx)
          $ctx = $this->schema->fields;

      foreach ($ctx as $f)
          $str.=$f. ",";

      return $str;
    }
public function getSchemaString ( $ ctx = null ) { $ str = "" ; if ( ! $ ctx ) $ ctx = $ this -> schema -> fields ; foreach ( $ ctx as $ f ) $ str .= $ f . "," ; return $ str ; }
get the schema fields in a comma seperated
form
get the schema fields in a comma seperated form