public boolean hasNext ( ) { // check if we already fetched next item if ( next != null ) { return true ; } // check if result set already finished if ( resultSetFinished ) { return false ; } // now fetch next item next = safeReadNext ( ) ; // check if we got something if ( next != null ) { return true ; } // no more items resultSetFinished = true ; return false ; }
used to note when result set exhausted