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6a7273e14c
CONVERSION code. Still need to figure out what to do about inappropriate coding in parsing.
101 lines
2.9 KiB
C
101 lines
2.9 KiB
C
/*-------------------------------------------------------------------------
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*
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* conversioncmds.c
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* conversion creation command support code
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*
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* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/commands/conversioncmds.c,v 1.5 2002/11/02 02:33:03 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#include "postgres.h"
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#include "catalog/pg_conversion.h"
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#include "catalog/catalog.h"
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#include "catalog/namespace.h"
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#include "catalog/pg_type.h"
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#include "mb/pg_wchar.h"
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#include "commands/conversioncmds.h"
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#include "miscadmin.h"
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#include "parser/parse_func.h"
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#include "utils/acl.h"
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#include "utils/lsyscache.h"
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/*
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* CREATE CONVERSION
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*/
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void
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CreateConversionCommand(CreateConversionStmt *stmt)
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{
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Oid namespaceId;
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char *conversion_name;
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AclResult aclresult;
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int for_encoding;
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int to_encoding;
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Oid funcoid;
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const char *for_encoding_name = stmt->for_encoding_name;
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const char *to_encoding_name = stmt->to_encoding_name;
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List *func_name = stmt->func_name;
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static Oid funcargs[] = {INT4OID, INT4OID, CSTRINGOID, CSTRINGOID, INT4OID};
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/* Convert list of names to a name and namespace */
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namespaceId = QualifiedNameGetCreationNamespace(stmt->conversion_name,
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&conversion_name);
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/* Check we have creation rights in target namespace */
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aclresult = pg_namespace_aclcheck(namespaceId, GetUserId(), ACL_CREATE);
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if (aclresult != ACLCHECK_OK)
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aclcheck_error(aclresult, get_namespace_name(namespaceId));
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/* Check the encoding names */
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for_encoding = pg_char_to_encoding(for_encoding_name);
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if (for_encoding < 0)
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elog(ERROR, "Invalid for encoding name: %s", for_encoding_name);
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to_encoding = pg_char_to_encoding(to_encoding_name);
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if (to_encoding < 0)
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elog(ERROR, "Invalid to encoding name: %s", to_encoding_name);
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/*
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* Check the existence of the conversion function. Function name could
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* be a qualified name.
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*/
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funcoid = LookupFuncName(func_name, sizeof(funcargs) / sizeof(Oid), funcargs);
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if (!OidIsValid(funcoid))
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func_error("CreateConversion", func_name,
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sizeof(funcargs) / sizeof(Oid), funcargs, NULL);
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/* Check we have EXECUTE rights for the function */
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aclresult = pg_proc_aclcheck(funcoid, GetUserId(), ACL_EXECUTE);
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if (aclresult != ACLCHECK_OK)
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aclcheck_error(aclresult, NameListToString(func_name));
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/*
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* All seem ok, go ahead (possible failure would be a duplicate
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* conversion name)
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*/
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ConversionCreate(conversion_name, namespaceId, GetUserId(),
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for_encoding, to_encoding, funcoid, stmt->def);
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}
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/*
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* DROP CONVERSION
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*/
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void
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DropConversionCommand(List *name, DropBehavior behavior)
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{
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Oid conversionOid;
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conversionOid = FindConversionByName(name);
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if (!OidIsValid(conversionOid))
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elog(ERROR, "conversion %s not found", NameListToString(name));
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ConversionDrop(conversionOid, behavior);
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}
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