2008/12/4 Stefan de Konink <[EMAIL PROTECTED]>: > Marcus Wolschon wrote: >> 2008/12/4 Stefan de Konink <[EMAIL PROTECTED]>: >>> Marcus Wolschon wrote: >>>> The structure is mutable, meaning you can add, modify and >>>> remove nodes, ways and attributes at will. >>> How did you solve fragmentation? >> >> Fragmentation occurs only in variable-length -records. >> I chose a fixed-length-record to avoid this issue. >> It allows for trivial reuse of empty spaces and speeds >> up seeking in the file. > > So you do not maintain order, only use indices?
That is correct. It would be too expensive to keep any kind of order when modifying a file containing the world or the size the world-file will have in..say..5 years. Marcus _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/dev
