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are now separate files "postgres.h" and "postgres_fe.h", which are meant to be the primary include files for backend .c files and frontend .c files respectively. By default, only include files meant for frontend use are installed into the installation include directory. There is a new make target 'make install-all-headers' that adds the whole content of the src/include tree to the installed fileset, for use by people who want to develop server-side code without keeping the complete source tree on hand. Cleaned up a whole lot of crufty and inconsistent header inclusions. |
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isbn_issn.c | ||
isbn_issn.sql.in | ||
Makefile | ||
README.isbn_issn |
ISBN (books) and ISSN (serials) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ This directory contains definitions for a couple of PostgreSQL external types, for a couple of international-standard namespaces: ISBN (books) and ISSN (serials). Rather than just using a char() member of the appropriate length, I wanted my database to include the validity-checking that both these numbering systems were designed to encompass. A little bit of research revealed the formulae for computing the check digits, and I also included some validity constraints on the number of hyphens. The internal representation of these types is intended to be compatible with `char16', in the (perhaps vain) hope that this will make it possible to create indices of these types using char16_ops. These are based on Tom Ivar Helbekkmo's IP address type definition, from which I have copied the entire form of the implementation. Garrett A. Wollman, August 1998