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| author | Alvaro Herrera <alvherre@alvh.no-ip.org> | 2016-03-23 23:01:35 -0300 |
|---|---|---|
| committer | Alvaro Herrera <alvherre@alvh.no-ip.org> | 2016-03-23 23:01:35 -0300 |
| commit | 473b93287040b20017cc25a157cffdc5b978c254 (patch) | |
| tree | 58f662a65247525b2e5e178b9050feb3f3056590 /src/backend/access/index | |
| parent | 2c6af4f44228d76d3351fe26f68b00b55cdd239a (diff) | |
| download | postgresql-473b93287040b20017cc25a157cffdc5b978c254.tar.gz postgresql-473b93287040b20017cc25a157cffdc5b978c254.zip | |
Support CREATE ACCESS METHOD
This enables external code to create access methods. This is useful so
that extensions can add their own access methods which can be formally
tracked for dependencies, so that DROP operates correctly. Also, having
explicit support makes pg_dump work correctly.
Currently only index AMs are supported, but we expect different types to
be added in the future.
Authors: Alexander Korotkov, Petr Jelínek
Reviewed-By: Teodor Sigaev, Petr Jelínek, Jim Nasby
Commitfest-URL: https://commitfest.postgresql.org/9/353/
Discussion: https://www.postgresql.org/message-id/CAPpHfdsXwZmojm6Dx+TJnpYk27kT4o7Ri6X_4OSWcByu1Rm+VA@mail.gmail.com
Diffstat (limited to 'src/backend/access/index')
| -rw-r--r-- | src/backend/access/index/amapi.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/backend/access/index/amapi.c b/src/backend/access/index/amapi.c index bda166a9ef8..d347ebcba45 100644 --- a/src/backend/access/index/amapi.c +++ b/src/backend/access/index/amapi.c @@ -62,6 +62,13 @@ GetIndexAmRoutineByAmId(Oid amoid) amoid); amform = (Form_pg_am) GETSTRUCT(tuple); + /* Check if it's index access method */ + if (amform->amtype != AMTYPE_INDEX) + ereport(ERROR, + (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE), + errmsg("access method \"%s\" is not of type %s", + NameStr(amform->amname), "INDEX"))); + amhandler = amform->amhandler; /* Complain if handler OID is invalid */ |