Pony interface to databases

This package contains interfaces to a few simple databases.

• LMDB (Lightning Memory Mapped Database) is an open source high-performance memory-mapped B-tree key-value database written by Symas Corporation. Online documentation is here, though the Pony wrapper simplifies most of it. Source is available at https://github.com/LMDB/lmdb.git.

• LevelDB is an open source key-value database written by Google and source is available at https://github.com/google/leveldb.git

  LevelDB is a simple key-value store with no added features like secondary indices, distribution, etc. Keys and values can be any byte sequences.

LMDB Usage

The LMDB interface supports these functions:

• Full-database, duplicate-key group, and partial key match scans
• Use of Pony iterator notation for clean query code
• Access to all lower level LMDB cursor operations
• Transactions
• Multiple 'databases' in one file. (actually separate B-trees - think of them as tables)
• Use of Array[U8], String, U128, U64, or U32 types as keys and data inputs
• Supports Pony 'sugar' notation for simple insert and retreival

See the file lmdb/test.pony for examples.

LevelDB Usage

See the file leveldb/test.pony

To do

• More of the management interface
• Index tables