NAME
ObjStore - Perl Extension For ObjectStore OODBMS
SYNOPSIS
Like perl? Sick of SQL? Ready to try something new? This extension implements databases that look exactly like normal perl. The same can also be extended with arbitrary C++ objects (!).
PREREQUISITES
- ObjectStore 5.1 (see http://www.odi.com; evaluations are available!)
- Perl 5.005_03 or 5.005_5x
- ExtUtils::ExCxx (only needed on Digital UNIX, HP (5.x), OS/2 (3.x), or MS Windows NT/95; send email)
See http://www.perl.com/CPAN/authors/id/JPRIT/ !
IS THIS FOR GENERIC C++ OBJECTSTORE OR ONLY PERL?
On Mon, 21 Sep 1998 tp@mccall.com wrote: > I was sort of hoping I'd be able to use perl to write quick-and-dirty data > manipulation scripts to mess around with my databases that are used by my > C++ applications. I don't know if I'd ever need that, but it sounded like > a useful thing to have in the toolbox, so to speak.
My experience with ObjectStore is that it is very low-level. This is an advantage for applications that require the highest level of performance. However, there is nothing that I do with databases that needs such extreme degrees of optimization.
Rather, I value ease of use and ease of change slightly above raw performance. When I designed the perl interface, I was always trying to optimize for these priorities. For example, I decided to start with a common, generic schema. This gained some big advantages: All perl databases are compatible. All perl databases will never require schema evolution. All perl databases can be edited with a standard perl shell.
Even so, ObjectStore's recent support of DLL schemas allows the seemless integration of application specific C++ objects. For example, a code generator is available (ObjStore-REP-HashRecord) that creates optimized records (ordered, typed tuple of fields -- like a C structure declaration). Recently, I also got PDL properly integrated (ObjStore-Lib-PDL). PDL is a perl extension for matrix mathematics.
I believe the uncommon ability to integrate with everything at the lowest level (C) while still remaining maximally generic and easy to query is unique among database architectures.
R!CENT CHANGES
** 01-12-99 RELEASE 1.52
- Split FatTree representation into a separate tarball.
- Added ObjStore::REP::Splash::ObjAV, an array that stores only pointers to composites.
- Fixed growth heuristics for Splash representations.
- More correct integration between C code & perl for APIs with a variable number of arguments.
- Partially factored tests into ObjStore::Test.
- Updates for Event 0.29.
- Delete some already deprecated code.
** 11-23-98 RELEASE 1.51
- Added more assertions to the API. A new (transient) memory leak debugging mode is available. See ObjStore::MakeMaker.
- os_smart_object tweaks for ObjStore-Lib-PDL.
- Fixed a bug that caused the save-stack to become corrupted during exceptions. Yikes!
- Fixed transient memory leak trigger when an SV holding a persistent object has non-transaction scope.
- Minor fixes to qtposh.
see ./INSTALL for hints on installation see ./UPGRADE if you are starting from a prior releases see ./TODO for a list of stuff in the tuit queue see ./CHANGES for a visionary perspective
Send any questions or comments to perl-objectstore@parallax.co.uk.
If you'd like to subscribe to the mailing list, send email to majordomo@parallax.co.uk. Thanks!
------------------------------------------------------------------------- Copyright © 1997-1999 Joshua Nathaniel Pritikin. All rights reserved.
This package is free software and is provided "as is" without express or implied warranty. It may be used, redistributed and/or modified under the terms of the Perl Artistic License (see http://www.perl.com/perl/misc/Artistic.html)
1 POD Error
The following errors were encountered while parsing the POD:
- Around line 108:
Non-ASCII character seen before =encoding in '©'. Assuming CP1252