DBM-Deep

Changes for version 1.0020

(This version is compatible with 1.0016)
- Fixed t/43_transaction_maximum.t so that it doesn't error out on systems
- which cannot fork > 255 children at one time.
Improved code coverage
- Added t/96_virtual_functions.t which helps describe what actually needs to be overridden in a new plugin.

(This is the third developer release for 1.0020.) (This version is compatible with 1.0016)
- Fixed problem where "./Build test" wouldn't actually -do- anything.
- (No-one apparently tried to install this till Steven Lembark. Thanks!)
Fixed speed regression with keys in the File backend.
- Introduced in 1.0019_002 to fix #50541
- Thanks, SPROUT!
(RT #53575) Recursion failure in STORE (Thanks, SPROUT)
Merged the rest of the fixes from 1.0015 and 1.0016
- Thanks to our new co-maintainer, SPROUT! :)
Had to turn off singleton support in the File backend because the caching was causing havoc with transactions. Turning on fatal warnings does give apparently important information.
Oh - forgot to mention that fatal warnings are now on in all files.

(This is the second developer release for 1.0020.) (This version is compatible with 1.0014)
- Fixed bug where attempting to store a value tied to something other than
- DBM::Deep would leave the file flocked.
  - Added support for DBD::SQLite
  - Build.PL has been extended to support sqlite vs. mysql
  - Storage::DBI now detects between the two DBDs
(RT #51888) Applied POD patch (Thanks, FWIE!)
(RT #44981) Added VERSION to ::Array, ::Engine, and ::Hash
Removed extraneous slashes from POD links (Thanks ilmari!)
(RT #50541) Fixed bug in clear() for hashes in the File backend.
- This has caused a regression in speed for clear() when clearing large hashes using running with the File backend. ->clear() (on my machine) now takes ( N / 40 ) ** (1.66) seconds. So, clearing 4000 keys (as is the test in t/03_bighash.t) would take ~2070 seconds.
(RT #40782) Fixed bug when handling a key of '0' (Thanks Sterling!)
(RT #48031) Fixed bug with localized $, (Thanks, SPROUT!)

(This is the first developer release for 1.0020.) (This version is compatible with 1.0014)
- DBM::Deep has been refactored to allow for multiple engines. There are two
- engines built so far:
  - File (the original engine)
  - DBI (an engine based on DBI)
The DBI engine has only been tested on MySQL and isn't transactional.
- InnoDB sucks horribly. When run in a sufficient isolation mode, it creates deadlocks.
A custom Build.PL has been written to allow for running tests under CPAN.pm against the various engines.
- This also allows running the long tests under CPAN.pm
This has meant a ton of refactoring. Hopefullly, this refactoring will allow finding some of the niggly bugs more easily. Those tests have not been enabled yet. That's the next developer release.
Hopefully, this multi-engine support will allow deprecation of the file format in the future.