Tom Lane 65c5fcd353 Restructure index access method API to hide most of it at the C level. ... This patch reduces pg_am to just two columns, a name and a handler function. All the data formerly obtained from pg_am is now provided in a C struct returned by the handler function. This is similar to the designs we've adopted for FDWs and tablesample methods. There are multiple advantages. For one, the index AM's support functions are now simple C functions, making them faster to call and much less error-prone, since the C compiler can now check function signatures. For another, this will make it far more practical to define index access methods in installable extensions. A disadvantage is that SQL-level code can no longer see attributes of index AMs; in particular, some of the crosschecks in the opr_sanity regression test are no longer possible from SQL. We've addressed that by adding a facility for the index AM to perform such checks instead. (Much more could be done in that line, but for now we're content if the amvalidate functions more or less replace what opr_sanity used to do.) We might also want to expose some sort of reporting functionality, but this patch doesn't do that. Alexander Korotkov, reviewed by Petr Jelínek, and rather heavily editorialized on by me.		2016-01-17 19:36:59 -05:00
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expected
sql
.gitignore
Makefile
pgstatapprox.c	Update copyright for 2016	2016-01-02 13:33:40 -05:00
pgstatindex.c	Restructure index access method API to hide most of it at the C level.	2016-01-17 19:36:59 -05:00
pgstattuple--1.0--1.1.sql
pgstattuple--1.1--1.2.sql
pgstattuple--1.2--1.3.sql
pgstattuple--1.3.sql
pgstattuple--unpackaged--1.0.sql
pgstattuple.c	Restructure index access method API to hide most of it at the C level.	2016-01-17 19:36:59 -05:00
pgstattuple.control