This is the log of changes made in each release of LMDBJava.

See the Release Notes for more details of new features or breaking changes.

• Remove DbiFlags.MDB_UNSIGNEDKEY and change default comparators to be unsigned (#249).
  • Add a builder for Dbi (Env.createDbi()) that makes the choice of comparator more clear.
  • Deprecate all Env.openDbi() methods. The builder is now the only way to create a Dbi.
  • Add MDB_INTEGERKEY specific comparators to ByteBufferProxy, ByteBufProxy and DirectBufferProxy.
  • Deprecate all methods that take a XxxFlags... varargs param.
  • Add XxxFlagSet interfaces and factory methods so users can pre-compute a FlagSet (and thus its mask value).
  • Change BufferProxy.getComparator() to take the DbiFlagSet as an argument so the proxy can return a comparator appropriate with the Dbi flags.
  • Allow the native mdb_cmp comparator to optionally be used for CursorIterable start/stop key comparisons.
  • Deprecate all Env.Builder.open() methods. Path is now preferred to File. Other arguments have been added as new builder methods.
  • Add a single new Env.Builder.open(final Path path) method.
  • Add Env.Builder methods for setting/adding flags.
  • Add Env.Builder methods for setting the file permissions.
  • Add Env.Builder method for setting the map size with a ByteUnit.
  • Remove dependency on com.jakewharton.byteunits:byteunits.
• Fix incorrect iteration with BACKWARD_AT_LEAST and BACKWARD_CLOSED when using DUPSORT (#267).

• Repackage LMDB 0.9.33 with broader Linux compatibility (glibc and add musl) (#280)
• Improve error message for undetected operating systems (#283)

• Resolve ByteArrayProxy bug when subject to GC (#252)
• Change GPG key which signs releases (#260)
• Introduce automated benchmark infrastructure (#262)
• Fix major read performance regression (e634b3f)
• Fix major write performance regression (#268)
• Identified LMDB system library write regression and packaged old versions (#277)
• Update to LMDB 0.9.33 (#266)
• Replace Zig cross-compiled LMDB with natively compiled versions (e5b510c)

• Add DbiFlags.MDB_UNSIGNEDKEY to fix regression in unsigned buffer comparators (#237)
• Update to LMDB 0.9.31 (#245)
• Updated dependencies: JNR-FFI, Agrona, Guava and Netty

• Adopt Zig cross compilation including Apple Silicon support (#217)
• Hold strong reference to all buffers passed to LmdbJava (#214)
• Refactor Comparator handling (#199)
• Add Env.readerCheck() method and fix associated Library method (#212)
• Introduce Automatic-Module-Name to MANIFEST.MF (#213)
• Updated dependencies: JNR-FFF, Agrona, Guava and Netty

• Update to LMDB native library 0.9.29 (#194)
• Fix bug where Cursor won't release KeyVal if write Txn already closed (#197)
• Support Netty ByteBuf variable sized data (#183)
• Env concurrency documentation clarifications (#195)
• Env.openDbi(..) now supports user-defined Txn (#192)
• DirectBufferProxy no longer uses an unnecessary concurrent queue for its pool (#200)
• Closed Env is now tracked to prevent unexpected SIGSEGV from later usage (#185)
• Updated dependencies: JNR-FFI, Agrona and Netty

• Support user-defined Netty PooledByteBufAllocator (#162)
• Fix bug when comparing ByteBuffers with differing lengths (#170)
• Fix typo in ByteBufferProxy (#172)
• Updated dependencies: JNR-FFI, Agrona and Netty

• Recompiled with Java 8 to fix JDK 9+ regression with NoSuchMethodError in ByteBuffer (#158)

• Update to LMDB native library 0.9.24 (#148)
• Promote Netty support from test to main source code (#152)
• Added support for mdb_dbi_flags (#146)
• Added Cursor.get(BufferProxy, BufferProxy, SeekOp) method (#100)
• JavaDoc improvements (#141)
• Fixed typo in ConstantDerivedException class name (#137)
• CursorIterator.iterable() should only return once (#153)
• CursorIterator design changes (#154)
• Allow configuration of target directory for extracted library (#155)
• Fix bug where Env.copy(File, CopyFlags) should permit destination to be a file (#157)
• ByteArrayProxy should be accessed using PROXY_BA (commit 57b1b5)
• DirectBufferProxy should be accessed using PROXY_DB (commit b60e7d)
• Created wiki pages to assist new users (#151)
• Updated dependencies: JNR-FFI, Agrona and Netty

• Added Verifier class to assist with support (#124)
• Fixed bug where custom comparator used across threads (#127)
• Fixed bug where custom comparator in use across GC (#125)
• Fixed Netty IndexOutOfBoundsException due to unexpected buffer class (#133)
• Improved TutorialTest so it doesn't unnecessarily use readers (#129)
• Updated dependencies: Agrona and Netty

• Fixed Windows 10 segmentation faults on Java 9 or above (#97)
• Fixed Java 8 compiler use (#116)
• Updated bundled LMDB library to version 0.9.23 (#115)
• Updated dependencies: Agrona and Netty

• Fixed KeyRange IndexOutOfBoundsException bug (#101)
• Fixed Netty IndexOutOfBoundsException due to writer index exceeding buffer capacity (#113)
• Env maxReader now defaults to 126 as per LMDB C library (#114)
• Env now offers setMaxReader(long) to change map size while in use (#112)
• Documentation improvements (#105, #99)
• Modifications to build and execute on Java 11 (Java 8 remains the minimum version)
• Updated dependencies: JNR-FFF, Agrona, Guava and Netty

• Fixed KeyRange reverse iteration bugs (#72, #86, #89)
• Fixed ByteBuffer.order() determinism from reused buffers (#76)
• Added CursorIterator.remove() (#71)
• Added support for deleting Dbis (#64)
• Added toString() methods to EnvInfo and Stat
• Improved descriptions for native exceptions (#63)
• Improved JavaDocs for DbiFlags and Cursor
• Updated bundled LMDB library to version 0.9.22 (#88)
• Updated dependencies: JNR-FFI, Agrona, Guava and Netty

• Added mdb_set_compare support (#56)
• Added KeyRange support (#7)
• Updated dependencies: Netty