diff options
Diffstat (limited to 'src/backend/utils/cache/typcache.c')
| -rw-r--r-- | src/backend/utils/cache/typcache.c | 101 |
1 files changed, 7 insertions, 94 deletions
diff --git a/src/backend/utils/cache/typcache.c b/src/backend/utils/cache/typcache.c index 16025e2c6ff..092910f07bd 100644 --- a/src/backend/utils/cache/typcache.c +++ b/src/backend/utils/cache/typcache.c @@ -36,23 +36,19 @@ * Portions Copyright (c) 1994, Regents of the University of California * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/utils/cache/typcache.c,v 1.15.2.2 2006/01/17 17:33:21 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/utils/cache/typcache.c,v 1.15.2.3 2006/02/10 19:01:22 tgl Exp $ * *------------------------------------------------------------------------- */ #include "postgres.h" -#include "access/genam.h" #include "access/heapam.h" #include "access/hash.h" #include "access/nbtree.h" -#include "catalog/indexing.h" -#include "catalog/pg_am.h" -#include "catalog/pg_opclass.h" -#include "parser/parse_coerce.h" +#include "catalog/pg_type.h" +#include "commands/defrem.h" #include "utils/builtins.h" #include "utils/catcache.h" -#include "utils/fmgroids.h" #include "utils/hsearch.h" #include "utils/lsyscache.h" #include "utils/syscache.h" @@ -92,9 +88,6 @@ static int32 RecordCacheArrayLen = 0; /* allocated length of array */ static int32 NextRecordTypmod = 0; /* number of entries used */ -static Oid lookup_default_opclass(Oid type_id, Oid am_id); - - /* * lookup_type_cache * @@ -177,14 +170,14 @@ lookup_type_cache(Oid type_id, int flags) TYPECACHE_EQ_OPR_FINFO | TYPECACHE_CMP_PROC_FINFO)) && typentry->btree_opc == InvalidOid) { - typentry->btree_opc = lookup_default_opclass(type_id, - BTREE_AM_OID); + typentry->btree_opc = GetDefaultOpClass(type_id, + BTREE_AM_OID); /* Only care about hash opclass if no btree opclass... */ if (typentry->btree_opc == InvalidOid) { if (typentry->hash_opc == InvalidOid) - typentry->hash_opc = lookup_default_opclass(type_id, - HASH_AM_OID); + typentry->hash_opc = GetDefaultOpClass(type_id, + HASH_AM_OID); } else { @@ -290,86 +283,6 @@ lookup_type_cache(Oid type_id, int flags) } /* - * lookup_default_opclass - * - * Given the OIDs of a datatype and an access method, find the default - * operator class, if any. Returns InvalidOid if there is none. - */ -static Oid -lookup_default_opclass(Oid type_id, Oid am_id) -{ - int nexact = 0; - int ncompatible = 0; - Oid exactOid = InvalidOid; - Oid compatibleOid = InvalidOid; - Relation rel; - ScanKeyData skey[1]; - SysScanDesc scan; - HeapTuple tup; - - /* If it's a domain, look at the base type instead */ - type_id = getBaseType(type_id); - - /* - * We scan through all the opclasses available for the access method, - * looking for one that is marked default and matches the target type - * (either exactly or binary-compatibly, but prefer an exact match). - * - * We could find more than one binary-compatible match, in which case we - * require the user to specify which one he wants. If we find more than - * one exact match, then someone put bogus entries in pg_opclass. - * - * This is the same logic as GetDefaultOpClass() in indexcmds.c, except - * that we consider all opclasses, regardless of the current search path. - */ - rel = heap_open(OperatorClassRelationId, AccessShareLock); - - ScanKeyInit(&skey[0], - Anum_pg_opclass_opcamid, - BTEqualStrategyNumber, F_OIDEQ, - ObjectIdGetDatum(am_id)); - - scan = systable_beginscan(rel, OpclassAmNameNspIndexId, true, - SnapshotNow, 1, skey); - - while (HeapTupleIsValid(tup = systable_getnext(scan))) - { - Form_pg_opclass opclass = (Form_pg_opclass) GETSTRUCT(tup); - - if (opclass->opcdefault) - { - if (opclass->opcintype == type_id) - { - nexact++; - exactOid = HeapTupleGetOid(tup); - } - else if (IsBinaryCoercible(type_id, opclass->opcintype)) - { - ncompatible++; - compatibleOid = HeapTupleGetOid(tup); - } - } - } - - systable_endscan(scan); - - heap_close(rel, AccessShareLock); - - if (nexact == 1) - return exactOid; - if (nexact != 0) - ereport(ERROR, - (errcode(ERRCODE_DUPLICATE_OBJECT), - errmsg("there are multiple default operator classes for data type %s", - format_type_be(type_id)))); - if (ncompatible == 1) - return compatibleOid; - - return InvalidOid; -} - - -/* * lookup_rowtype_tupdesc * * Given a typeid/typmod that should describe a known composite type, |