[elephant-devel] A new Postmodern backend

[Ian Eslick]

Henrik,

Can you run a clean version of the latest CVS on your 64-bit SBCL  
implementation?  I'd like to verify that the test suite is green on  
that configuration and I don't have a local 64-bit installation.   
This would be very much appreciated.  I think we're just about ready  
to do a beta release, leaving only documentation to do.

Thank you,
Ian

On Mar 9, 2007, at 12:31 PM, Henrik Hjelte wrote:

> I have made a new elephant backend, db-postmodern.
> It uses postgresql for storage, and the postmodern lisp socket  
> interface
> instead of clsql. The implementation is actually quite different from
> the clsql backend.
>
> db-postmodern uses prepared queries and stored procedures for
> performance reasons.
>
> The db-postmodern cursor is based on a sql cursor. Each btree has its
> own database table.
>
> db-postmodern is slower than the berkeley db backend, I guess about  
> four
> or five times.
>
> It now passes all tests and the migration test, but should of  
> course be
> regarded as an alpha. It is only tested on sbcl, but should work on  
> all
> platforms that postmodern supports.
>
> About postmodern:
> http://common-lisp.net/project/postmodern/
> db-postmodern mainly uses the lower level cl-postgres driver in the
> postmodern project.
>
> During development I used a darcs mirror of elephant, and I have
> temporarily put it at common-lisp.net. This darcs branch is  
> intended for
> people wanting to try db-postmodern, and it is not an automatic mirror
> of the cvs elephant.
>
> Download:
>
> To get elephant containing db-postmodern,
> darcs get http://common-lisp.net/project/grand-prix/darcs/elephant
>
> Best wishes,
> Henrik Hjelte
>
>
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