question: public void createProjection ( List < SelectColumn > columns ) { ArrayList < Object > fieldValues = new ArrayList < Object > ( ) ; for ( int i = 0 ; i < columns . size ( ) ; i ++ ) { SelectColumn column = columns . get ( i ) ; if ( ! column . isVisible ( ) ) continue ; QueryTableData columnTableData = column . getColumnTableData ( ) ; if ( columnTableData == null ) { fieldValues . add ( null ) ; continue ; } IEntryPacket entry = getEntry ( columnTableData . getTableIndex ( ) ) ; if ( entry == null ) { fieldValues . add ( null ) ; } else if ( column . isUid ( ) ) { fieldValues . add ( entry . getUID ( ) ) ; } else { fieldValues . add ( column . getFieldValue ( entry ) ) ; } } setFieldsValues ( fieldValues . toArray ( ) ) ; }
target:  Create columns projection from the joined entries