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Support CREATE ACCESS METHOD

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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
This commit is contained in:
Alvaro Herrera
2016-03-23 23:01:35 -03:00
parent 2c6af4f442
commit 473b932870
37 changed files with 1150 additions and 101 deletions
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9
src/include/commands/defrem.h
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@@ -91,8 +91,6 @@ extern void IsThereOpClassInNamespace(const char *opcname, Oid opcmethod,
Oid opcnamespace);
extern void IsThereOpFamilyInNamespace(const char *opfname, Oid opfmethod,
Oid opfnamespace);
extern Oid get_am_oid(const char *amname, bool missing_ok);
extern char *get_am_name(Oid amOid);
extern Oid get_opclass_oid(Oid amID, List *opclassname, bool missing_ok);
extern Oid get_opfamily_oid(Oid amID, List *opfamilyname, bool missing_ok);
@@ -137,6 +135,13 @@ extern Datum transformGenericOptions(Oid catalogId,
List *options,
Oid fdwvalidator);
/* commands/amcmds.c */
extern ObjectAddress CreateAccessMethod(CreateAmStmt *stmt);
extern void RemoveAccessMethodById(Oid amOid);
extern Oid get_index_am_oid(const char *amname, bool missing_ok);
extern Oid get_am_oid(const char *amname, bool missing_ok);
extern char *get_am_name(Oid amOid);
/* support routines in commands/define.c */
extern char *defGetString(DefElem *def);