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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
Download Patch File Download Diff File Expand all files Collapse all files

18
src/backend/tcop/utility.c
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@@ -1520,6 +1520,10 @@ ProcessUtilitySlow(Node *parsetree,
address = ExecSecLabelStmt((SecLabelStmt *) parsetree);
break;
case T_CreateAmStmt:
address = CreateAccessMethod((CreateAmStmt *) parsetree);
break;
default:
elog(ERROR, "unrecognized node type: %d",
(int) nodeTag(parsetree));
@@ -2160,6 +2164,9 @@ CreateCommandTag(Node *parsetree)
case OBJECT_TRANSFORM:
tag = "DROP TRANSFORM";
break;
case OBJECT_ACCESS_METHOD:
tag = "DROP ACCESS METHOD";
break;
default:
tag = "???";
}
@@ -2256,6 +2263,9 @@ CreateCommandTag(Node *parsetree)
case OBJECT_COLLATION:
tag = "CREATE COLLATION";
break;
case OBJECT_ACCESS_METHOD:
tag = "CREATE ACCESS METHOD";
break;
default:
tag = "???";
}
@@ -2519,6 +2529,10 @@ CreateCommandTag(Node *parsetree)
tag = "ALTER POLICY";
break;
case T_CreateAmStmt:
tag = "CREATE ACCESS METHOD";
break;
case T_PrepareStmt:
tag = "PREPARE";
break;
@@ -3076,6 +3090,10 @@ GetCommandLogLevel(Node *parsetree)
lev = LOGSTMT_DDL;
break;
case T_CreateAmStmt:
lev = LOGSTMT_DDL;
break;
/* already-planned queries */
case T_PlannedStmt:
{