Re: ISAM driver for PostgreSQL

Merlin Moncure wrote:
> Does anybody think there might be some interest in an ISAM driver for
> PostgreSQL?  I've written a functional alpha that allows PostgreSQL to
> be a drop in (or as easy as reasonably possible) replacement for an ISAM
> file system driving a COBOL application.  It is a STL based thin wrapper
> around libpq that generates queries on the fly from traditional ISAM
> (read, write, start, etc.).  It was made to be generic, allowing porting
> to various COBOL vendors' compilers with minimal effort.  Error
> conditions are returned as traditional COBOL error codes.  The main
> drawback to the system is that performance is highly sensitive to
> network latency (as are most COBOL applications).
> 
> Unlike traditional hybrid COBOL which use ESQL, this system could run
> native COBOL code with reasonable performance in any COBOL application
> which allows linking to an external ISAM file system.  This is very much
> a work in progress, built strictly for my own needs; but could be made
> to be useful in a more general sense.  I'm thinking about cleaning up
> the code and setting up a project on sourceforge.
> 
> PostgreSQL is uniquely suited for this purpose because of its
> portability and rich syntax.  A good example is postgres's array type
> which maps very elegantly to COBOL's OCCURS syntax.

Don't know --- no one has asked for this before.  You could create a
project on gborg.postgresql.org and see if folks find it useful.

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