hamsterdb 0.4.6 - Release Notes

This release adds support duplicate items. Also, a few bugs were fixed, especially on big-endian architectures.

New Features

"Duplicate Keys": hamsterdb now supports duplicate keys. A new sample (db5.c) demonstrates the new functions.

Bugfixes

Record number databases were broken on big-endian architectures.
If a cursor pointed to an item, but this item was erased (either with another cursor or ham_erase), the cursor was not updated and a subsequent access would result in undefined behaviour.
Overwriting record number keys was not possible because a new (incremented) recno key was assigned even if the flag HAM_OVERWRITE was specified.

Other Changes

The function ham_cursor_replace was renamed to ham_cursor_overwrite.
More unittests were added.
hamsterdb is now released under GPL 2.0 or later, which also includes GPL 3.0.

Known Issues

The functionality of duplicate keys is complete, but the performance is not completely satisfying. In rare cases (with databases > 60 MB and large page sizes), the freelist management slows down all operations and increases the database file size exponentially. These problems will be fixed in the next release.
The Visual Studio project file for sample db5 is missing in the source distribution.

For more information, read the README and the CHANGELOG.