This commit tweaks the generation of the syscache IDs for the enum SysCacheIdentifier to now include an invalid value, with -1 assigned as value. The concept of an invalid syscache ID exists when handling lookups of a ObjectAddress, based on their set of properties in ObjectPropertyType. -1 is used for the case where an object type has no option for a syscache lookup. This has been found as independently useful while discussing a switch of SysCacheIdentifier to a typedef, as we already have places that want to know about the concept of an invalid value when dealing with ObjectAddresses. Reviewed-by: Andreas Karlsson <andreas@proxel.se> Discussion: https://postgr.es/m/aZQRnmp9nVjtxAHS@paquier.xyz
PostgreSQL Database Management System
This directory contains the source code distribution of the PostgreSQL database management system.
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.