question: private QueryBuilderKraken parseNotify ( ) { NotifyQueryBuilder query = new NotifyQueryBuilder ( _tableManager , _sql ) ; Token token ; String tableName = parseTableName ( ) ; query . setTableName ( tableName ) ; _query = query ; ExprKraken whereExpr = null ; token = scanToken ( ) ; if ( token == Token . WHERE ) { whereExpr = parseExpr ( ) ; } else if ( token != null ) { throw error ( "expected WHERE at '{0}'" , token ) ; } ParamExpr [ ] params = _params . toArray ( new ParamExpr [ _params . size ( ) ] ) ; query . setParams ( params ) ; query . setWhereExpr ( whereExpr ) ; return query ; }
target:  notify: signals to watch without updating data