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Add operator strategy and comparison-value datatype fields to ScanKey.

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Remove the 'strategy map' code, which was a large amount of mechanism
that no longer had any use except reverse-mapping from procedure OID to
strategy number.  Passing the strategy number to the index AM in the
first place is simpler and faster.
This is a preliminary step in planned support for cross-datatype index
operations.  I'm committing it now since the ScanKeyEntryInitialize()
API change touches quite a lot of files, and I want to commit those
changes before the tree drifts under me.
This commit is contained in:
Tom Lane
2003-11-09 21:30:38 +00:00
parent 723825afeb
commit c1d62bfd00
72 changed files with 950 additions and 2147 deletions
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68
src/backend/commands/dbcommands.c
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@@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/dbcommands.c,v 1.124 2003/09/29 00:05:24 petere Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/dbcommands.c,v 1.125 2003/11/09 21:30:36 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -27,6 +27,7 @@
#include "catalog/pg_database.h"
#include "catalog/pg_shadow.h"
#include "catalog/indexing.h"
#include "catalog/pg_type.h"
#include "commands/comment.h"
#include "commands/dbcommands.h"
#include "miscadmin.h"
@@ -530,10 +531,13 @@ dropdb(const char *dbname)
/*
* Find the database's tuple by OID (should be unique).
*/
ScanKeyEntryInitialize(&key, 0, ObjectIdAttributeNumber,
F_OIDEQ, ObjectIdGetDatum(db_id));
ScanKeyEntryInitialize(&key, 0,
ObjectIdAttributeNumber,
BTEqualStrategyNumber, F_OIDEQ,
ObjectIdGetDatum(db_id), OIDOID);
pgdbscan = systable_beginscan(pgdbrel, DatabaseOidIndex, true, SnapshotNow, 1, &key);
pgdbscan = systable_beginscan(pgdbrel, DatabaseOidIndex, true,
SnapshotNow, 1, &key);
tup = systable_getnext(pgdbscan);
if (!HeapTupleIsValid(tup))
@@ -612,9 +616,12 @@ RenameDatabase(const char *oldname, const char *newname)
*/
rel = heap_openr(DatabaseRelationName, AccessExclusiveLock);
ScanKeyEntryInitialize(&key, 0, Anum_pg_database_datname,
F_NAMEEQ, NameGetDatum(oldname));
scan = systable_beginscan(rel, DatabaseNameIndex, true, SnapshotNow, 1, &key);
ScanKeyEntryInitialize(&key, 0,
Anum_pg_database_datname,
BTEqualStrategyNumber, F_NAMEEQ,
NameGetDatum(oldname), NAMEOID);
scan = systable_beginscan(rel, DatabaseNameIndex, true,
SnapshotNow, 1, &key);
tup = systable_getnext(scan);
if (!HeapTupleIsValid(tup))
@@ -644,9 +651,12 @@ RenameDatabase(const char *oldname, const char *newname)
oldname)));
/* make sure the new name doesn't exist */
ScanKeyEntryInitialize(&key2, 0, Anum_pg_database_datname,
F_NAMEEQ, NameGetDatum(newname));
scan2 = systable_beginscan(rel, DatabaseNameIndex, true, SnapshotNow, 1, &key2);
ScanKeyEntryInitialize(&key2, 0,
Anum_pg_database_datname,
BTEqualStrategyNumber, F_NAMEEQ,
NameGetDatum(newname), NAMEOID);
scan2 = systable_beginscan(rel, DatabaseNameIndex, true,
SnapshotNow, 1, &key2);
if (HeapTupleIsValid(systable_getnext(scan2)))
ereport(ERROR,
(errcode(ERRCODE_DUPLICATE_DATABASE),
@@ -702,9 +712,12 @@ AlterDatabaseSet(AlterDatabaseSetStmt *stmt)
valuestr = flatten_set_variable_args(stmt->variable, stmt->value);
rel = heap_openr(DatabaseRelationName, RowExclusiveLock);
ScanKeyEntryInitialize(&scankey, 0, Anum_pg_database_datname,
F_NAMEEQ, NameGetDatum(stmt->dbname));
scan = systable_beginscan(rel, DatabaseNameIndex, true, SnapshotNow, 1, &scankey);
ScanKeyEntryInitialize(&scankey, 0,
Anum_pg_database_datname,
BTEqualStrategyNumber, F_NAMEEQ,
NameGetDatum(stmt->dbname), NAMEOID);
scan = systable_beginscan(rel, DatabaseNameIndex, true,
SnapshotNow, 1, &scankey);
tuple = systable_getnext(scan);
if (!HeapTupleIsValid(tuple))
ereport(ERROR,
@@ -782,10 +795,13 @@ get_db_info(const char *name, Oid *dbIdP, int4 *ownerIdP,
/* Caller may wish to grab a better lock on pg_database beforehand... */
relation = heap_openr(DatabaseRelationName, AccessShareLock);
ScanKeyEntryInitialize(&scanKey, 0, Anum_pg_database_datname,
F_NAMEEQ, NameGetDatum(name));
ScanKeyEntryInitialize(&scanKey, 0,
Anum_pg_database_datname,
BTEqualStrategyNumber, F_NAMEEQ,
NameGetDatum(name), NAMEOID);
scan = systable_beginscan(relation, DatabaseNameIndex, true, SnapshotNow, 1, &scanKey);
scan = systable_beginscan(relation, DatabaseNameIndex, true,
SnapshotNow, 1, &scanKey);
tuple = systable_getnext(scan);
@@ -985,10 +1001,12 @@ get_database_oid(const char *dbname)
/* There's no syscache for pg_database, so must look the hard way */
pg_database = heap_openr(DatabaseRelationName, AccessShareLock);
ScanKeyEntryInitialize(&entry[0], 0x0,
Anum_pg_database_datname, F_NAMEEQ,
CStringGetDatum(dbname));
scan = systable_beginscan(pg_database, DatabaseNameIndex, true, SnapshotNow, 1, entry);
ScanKeyEntryInitialize(&entry[0], 0,
Anum_pg_database_datname,
BTEqualStrategyNumber, F_NAMEEQ,
CStringGetDatum(dbname), NAMEOID);
scan = systable_beginscan(pg_database, DatabaseNameIndex, true,
SnapshotNow, 1, entry);
dbtuple = systable_getnext(scan);
@@ -1023,10 +1041,12 @@ get_database_name(Oid dbid)
/* There's no syscache for pg_database, so must look the hard way */
pg_database = heap_openr(DatabaseRelationName, AccessShareLock);
ScanKeyEntryInitialize(&entry[0], 0x0,
ObjectIdAttributeNumber, F_OIDEQ,
ObjectIdGetDatum(dbid));
scan = systable_beginscan(pg_database, DatabaseOidIndex, true, SnapshotNow, 1, entry);
ScanKeyEntryInitialize(&entry[0], 0,
ObjectIdAttributeNumber,
BTEqualStrategyNumber, F_OIDEQ,
ObjectIdGetDatum(dbid), OIDOID);
scan = systable_beginscan(pg_database, DatabaseOidIndex, true,
SnapshotNow, 1, entry);
dbtuple = systable_getnext(scan);