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firebird-mirror/src/jrd/dsc.cpp
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2010-01-04 09:05:16 +00:00

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/*
* PROGRAM: JRD Access Method
* MODULE: dsc.cpp
* DESCRIPTION: Utility routines for working with data descriptors
*
* Note: This module is used by both engine & utility functions.
*
* The contents of this file are subject to the Interbase Public
* License Version 1.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy
* of the License at http://www.Inprise.com/IPL.html
*
* Software distributed under the License is distributed on an
* "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express
* or implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code was created by Inprise Corporation
* and its predecessors. Portions created by Inprise Corporation are
* Copyright (C) Inprise Corporation.
*
* All Rights Reserved.
* Contributor(s): ______________________________________.
*/
#include "firebird.h"
#include <string.h>
#include <stdlib.h>
#include "../jrd/common.h"
#include "../jrd/dsc.h"
#include "../jrd/ibase.h"
#include "../jrd/intl.h"
#include "../jrd/gds_proto.h"
#include "../jrd/gdsassert.h"
#include "../jrd/dsc_proto.h"
// When converting non-text values to text, how many bytes to allocate
// for holding the text image of the value.
static const USHORT _DSC_convert_to_text_length[DTYPE_TYPE_MAX] =
{
0, // dtype_unknown
0, // dtype_text
0, // dtype_cstring
0, // dtype_varying
0,
0,
0, // dtype_packed
0, // dtype_byte
6, // dtype_short -32768
11, // dtype_long -2147483648
20, // dtype_quad -9223372036854775808
15, // dtype_real -1.23456789e+12
24, // dtype_double -1.2345678901234567e+123
24, // dtype_d_float (believed to have this range) -1.2345678901234567e+123
10, // dtype_sql_date YYYY-MM-DD
13, // dtype_sql_time HH:MM:SS.MMMM
25, // dtype_timestamp YYYY-MM-DD HH:MM:SS.MMMM
// -- in BLR_version4 DD-Mon-YYYY HH:MM:SS.MMMM
9, // dtype_blob FFFF:FFFF
9, // dtype_array FFFF:FFFF
20, // dtype_int64 -9223372036854775808
0 // dtype_dbkey
};
// blr to dsc type conversions
static const USHORT DSC_blr_type_mapping[] =
{
blr_null,
blr_text,
blr_cstring,
blr_varying,
blr_null,
blr_null,
blr_null,
blr_null,
blr_short,
blr_long,
blr_double,
blr_d_float,
blr_sql_date,
blr_sql_time,
blr_timestamp,
blr_blob,
blr_blob,
blr_int64,
blr_null
};
// Unimplemented names are in lowercase & <brackets>
// Datatypes that represent a range of SQL datatypes are in lowercase
static const TEXT* const DSC_dtype_names[] =
{
"<dtype_unknown>",
"CHAR",
"CSTRING",
"VARCHAR",
"<dtype_4>",
"<dtype_5>",
"<packed>",
"<byte>",
"SMALLINT", // Also DECIMAL & NUMERIC
"INTEGER", // Also DECIMAL & NUMERIC
"<quad>",
"FLOAT",
"DOUBLE PRECISION",
"<d_float>",
"DATE",
"TIME",
"TIMESTAMP",
"BLOB",
"ARRAY",
"BIGINT",
"DB_KEY"
};
// The result of adding two datatypes in blr_version5 semantics
// Note: DTYPE_CANNOT as the result means that the operation cannot be done.
// dtype_unknown as the result means that we do not yet know the type of one of
// the operands, so we cannot decide the type of the result.
const BYTE DSC_add_result[DTYPE_TYPE_MAX][DTYPE_TYPE_MAX] =
{
/*
dtype_unknown dtype_text dtype_cstring dtype_varying
4 (unused) 5 (unused) dtype_packed dtype_byte
dtype_short dtype_long dtype_quad dtype_real
dtype_double dtype_d_float dtype_sql_date dtype_sql_time
dtype_timestamp dtype_blob dtype_array dtype_int64
dtype_dbkey
*/
// dtype_unknown
{dtype_unknown, dtype_unknown, dtype_unknown, dtype_unknown,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_unknown, dtype_unknown, DTYPE_CANNOT, dtype_unknown,
dtype_unknown, dtype_unknown, dtype_unknown, dtype_unknown,
dtype_unknown, DTYPE_CANNOT, DTYPE_CANNOT, dtype_unknown,
DTYPE_CANNOT},
// dtype_text
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_double, dtype_double, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_timestamp, DTYPE_CANNOT, DTYPE_CANNOT, dtype_double,
DTYPE_CANNOT},
// dtype_cstring
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_double, dtype_double, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_timestamp, DTYPE_CANNOT, DTYPE_CANNOT, dtype_double,
DTYPE_CANNOT},
// dtype_varying
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_double, dtype_double, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_timestamp, DTYPE_CANNOT, DTYPE_CANNOT, dtype_double,
DTYPE_CANNOT},
// 4 (unused)
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// 5 (unused)
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_packed
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_byte
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_short
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_int64, dtype_int64, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, dtype_sql_date, dtype_sql_time,
dtype_timestamp, DTYPE_CANNOT, DTYPE_CANNOT, dtype_int64,
DTYPE_CANNOT},
// dtype_long
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_int64, dtype_int64, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, dtype_sql_date, dtype_sql_time,
dtype_timestamp, DTYPE_CANNOT, DTYPE_CANNOT, dtype_int64,
DTYPE_CANNOT},
// dtype_quad
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_real
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_double, dtype_double, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, dtype_sql_date, dtype_sql_time,
dtype_timestamp, DTYPE_CANNOT, DTYPE_CANNOT, dtype_double,
DTYPE_CANNOT},
// dtype_double
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_double, dtype_double, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, dtype_sql_date, dtype_sql_time,
dtype_timestamp, DTYPE_CANNOT, DTYPE_CANNOT, dtype_double,
DTYPE_CANNOT},
// dtype_d_float -- VMS deprecated
{dtype_unknown, dtype_d_float, dtype_d_float, dtype_d_float,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_d_float, dtype_d_float, DTYPE_CANNOT, dtype_d_float,
dtype_d_float, dtype_d_float, dtype_sql_date, dtype_sql_time,
dtype_timestamp, DTYPE_CANNOT, DTYPE_CANNOT, dtype_d_float,
DTYPE_CANNOT},
// dtype_sql_date
{dtype_unknown, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_sql_date, dtype_sql_date, DTYPE_CANNOT, dtype_sql_date,
dtype_sql_date, dtype_sql_date, DTYPE_CANNOT, dtype_timestamp,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_sql_date,
DTYPE_CANNOT},
// dtype_sql_time
{dtype_unknown, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_sql_time, dtype_sql_time, DTYPE_CANNOT, dtype_sql_time,
dtype_sql_time, dtype_sql_time, dtype_timestamp, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_sql_time,
DTYPE_CANNOT},
// dtype_timestamp
{dtype_unknown, dtype_timestamp, dtype_timestamp, dtype_timestamp,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_timestamp, dtype_timestamp, DTYPE_CANNOT, dtype_timestamp,
dtype_timestamp, dtype_timestamp, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_timestamp,
DTYPE_CANNOT},
// dtype_blob
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_array
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_int64
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_int64, dtype_int64, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, dtype_sql_date, dtype_sql_time,
dtype_timestamp, DTYPE_CANNOT, DTYPE_CANNOT, dtype_int64,
DTYPE_CANNOT},
// dtype_dbkey
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT}
};
/* The result of subtracting two datatypes in blr_version5 semantics
Note: DTYPE_CANNOT as the result means that the operation cannot be done.
dtype_unknown as the result means that we do not yet know the type of one of
the operands, so we cannot decide the type of the result. */
const BYTE DSC_sub_result[DTYPE_TYPE_MAX][DTYPE_TYPE_MAX] =
{
/*
dtype_unknown dtype_text dtype_cstring dtype_varying
4 (unused) 5 (unused) dtype_packed dtype_byte
dtype_short dtype_long dtype_quad dtype_real
dtype_double dtype_d_float dtype_sql_date dtype_sql_time
dtype_timestamp dtype_blob dtype_array dtype_int64
dtype_dbkey
*/
// dtype_unknown
{dtype_unknown, dtype_unknown, dtype_unknown, dtype_unknown,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_unknown, dtype_unknown, DTYPE_CANNOT, dtype_unknown,
dtype_unknown, dtype_unknown, dtype_unknown, dtype_unknown,
dtype_unknown, DTYPE_CANNOT, DTYPE_CANNOT, dtype_unknown,
DTYPE_CANNOT},
// dtype_text
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_double, dtype_double, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_timestamp, DTYPE_CANNOT, DTYPE_CANNOT, dtype_double,
DTYPE_CANNOT},
// dtype_cstring
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_double, dtype_double, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_timestamp, DTYPE_CANNOT, DTYPE_CANNOT, dtype_double,
DTYPE_CANNOT},
// dtype_varying
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_double, dtype_double, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_timestamp, DTYPE_CANNOT, DTYPE_CANNOT, dtype_double,
DTYPE_CANNOT},
// 4 (unused)
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// 5 (unused)
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_packed
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_byte
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_short
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_int64, dtype_int64, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_int64,
DTYPE_CANNOT},
// dtype_long
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_int64, dtype_int64, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_int64,
DTYPE_CANNOT},
// dtype_quad
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_real
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_double, dtype_double, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_double,
DTYPE_CANNOT},
// dtype_double
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_double, dtype_double, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_double,
DTYPE_CANNOT},
// dtype_d_float -- VMS deprecated
{dtype_unknown, dtype_d_float, dtype_d_float, dtype_d_float,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_d_float, dtype_d_float, DTYPE_CANNOT, dtype_d_float,
dtype_d_float, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_d_float,
DTYPE_CANNOT},
// dtype_sql_date
{dtype_unknown, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_sql_date, dtype_sql_date, DTYPE_CANNOT, dtype_sql_date,
dtype_sql_date, dtype_sql_date, dtype_long, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_sql_date,
DTYPE_CANNOT},
// dtype_sql_time
{dtype_unknown, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_sql_time, dtype_sql_time, DTYPE_CANNOT, dtype_sql_time,
dtype_sql_time, dtype_sql_time, DTYPE_CANNOT, dtype_long,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_sql_time,
DTYPE_CANNOT},
// dtype_timestamp
{dtype_unknown, dtype_timestamp, dtype_timestamp, dtype_timestamp,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_timestamp, dtype_timestamp, DTYPE_CANNOT, dtype_timestamp,
dtype_timestamp, dtype_timestamp, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_double, DTYPE_CANNOT, DTYPE_CANNOT, dtype_timestamp,
DTYPE_CANNOT},
// dtype_blob
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_array
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_int64
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_int64, dtype_int64, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_int64,
DTYPE_CANNOT},
// dtype_dbkey
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT}
};
/* The result of multiplying or dividing two datatypes in blr_version5 semantics
Note: DTYPE_CANNOT as the result means that the operation cannot be done.
dtype_unknown as the result means that we do not yet know the type of one of
the operands, so we cannot decide the type of the result. */
const BYTE DSC_multiply_result[DTYPE_TYPE_MAX][DTYPE_TYPE_MAX] =
{
/*
dtype_unknown dtype_text dtype_cstring dtype_varying
4 (unused) 5 (unused) dtype_packed dtype_byte
dtype_short dtype_long dtype_quad dtype_real
dtype_double dtype_d_float dtype_sql_date dtype_sql_time
dtype_timestamp dtype_blob dtype_array dtype_int64
dtype_dbkey
*/
// dtype_unknown
{dtype_unknown, dtype_unknown, dtype_unknown, dtype_unknown,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_unknown, dtype_unknown, DTYPE_CANNOT, dtype_unknown,
dtype_unknown, dtype_unknown, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_unknown,
DTYPE_CANNOT},
// dtype_text
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_double, dtype_double, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_double,
DTYPE_CANNOT},
// dtype_cstring
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_double, dtype_double, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_double,
DTYPE_CANNOT},
// dtype_varying
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_double, dtype_double, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_double,
DTYPE_CANNOT},
// 4 (unused)
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// 5 (unused)
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_packed
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_byte
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_short
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_int64, dtype_int64, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_int64,
DTYPE_CANNOT},
// dtype_long
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_int64, dtype_int64, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_int64,
DTYPE_CANNOT},
// dtype_quad
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_real
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_double, dtype_double, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_double,
DTYPE_CANNOT},
// dtype_double
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_double, dtype_double, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_double,
DTYPE_CANNOT},
// dtype_d_float -- VMS deprecated
{dtype_unknown, dtype_d_float, dtype_d_float, dtype_d_float,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_d_float, dtype_d_float, DTYPE_CANNOT, dtype_d_float,
dtype_d_float, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_d_float,
DTYPE_CANNOT},
// dtype_sql_date
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_sql_time
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_timestamp
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_blob
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_array
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_int64
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_int64, dtype_int64, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_int64,
DTYPE_CANNOT},
// dtype_dbkey
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT}
};
/* The result of multiplying two datatypes in blr_version4 semantics.
Note: DTYPE_CANNOT as the result means that the operation cannot be done.
dtype_unknown as the result means that we do not yet know the type of one of
the operands, so we cannot decide the type of the result. */
const BYTE DSC_multiply_blr4_result[DTYPE_TYPE_MAX][DTYPE_TYPE_MAX] =
{
/*
dtype_unknown dtype_text dtype_cstring dtype_varying
4 (unused) 5 (unused) dtype_packed dtype_byte
dtype_short dtype_long dtype_quad dtype_real
dtype_double dtype_d_float dtype_sql_date dtype_sql_time
dtype_timestamp dtype_blob dtype_array dtype_int64
dtype_dbkey
*/
// dtype_unknown
{dtype_unknown, dtype_unknown, dtype_unknown, dtype_unknown,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_unknown, dtype_unknown, DTYPE_CANNOT, dtype_unknown,
dtype_unknown, dtype_unknown, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_unknown,
DTYPE_CANNOT},
// dtype_text
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_double, dtype_double, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_double,
DTYPE_CANNOT},
// dtype_cstring
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_double, dtype_double, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_double,
DTYPE_CANNOT},
// dtype_varying
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_double, dtype_double, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_double,
DTYPE_CANNOT},
// 4 (unused)
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// 5 (unused)
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_packed
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_byte
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_short
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_long, dtype_long, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_double,
DTYPE_CANNOT},
// dtype_long
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_long, dtype_long, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_double,
DTYPE_CANNOT},
// dtype_quad
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_real
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_double, dtype_double, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_double,
DTYPE_CANNOT},
// dtype_double
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_double, dtype_double, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_double,
DTYPE_CANNOT},
// dtype_d_float -- VMS deprecated
{dtype_unknown, dtype_d_float, dtype_d_float, dtype_d_float,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_d_float, dtype_d_float, DTYPE_CANNOT, dtype_d_float,
dtype_d_float, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_d_float,
DTYPE_CANNOT},
// dtype_sql_date
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_sql_time
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_timestamp
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_blob
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_array
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT},
// dtype_int64
{dtype_unknown, dtype_double, dtype_double, dtype_double,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
dtype_double, dtype_double, DTYPE_CANNOT, dtype_double,
dtype_double, dtype_d_float, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, dtype_double,
DTYPE_CANNOT},
// dtype_dbkey
{DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT, DTYPE_CANNOT,
DTYPE_CANNOT}
};
#ifdef DEV_BUILD
static bool validate_dsc_tables();
#endif
int dsc::getStringLength() const
{
return DSC_string_length(this);
}
USHORT DSC_convert_to_text_length(USHORT dsc_type)
{
if (dsc_type < (sizeof(_DSC_convert_to_text_length) / sizeof(_DSC_convert_to_text_length[0])))
return _DSC_convert_to_text_length[dsc_type] + (dsc_type == dtype_int64 ? 1 : 0);
fb_assert(FALSE);
return 0;
}
bool DSC_make_descriptor(DSC* desc,
USHORT blr_type,
SSHORT scale,
USHORT length,
SSHORT sub_type,
SSHORT charset,
SSHORT collation)
{
/**************************************
*
* D S C _ m a k e _ d e s c r i p t o r
*
**************************************
*
* Functional description
* Make an internal descriptor from external parameters.
*
**************************************/
#ifdef DEV_BUILD
{
// Execute this validation code once per server startup only
static bool been_here = false;
if (!been_here)
{
been_here = true;
fb_assert(validate_dsc_tables());
}
}
#endif
desc->dsc_flags = 0;
desc->dsc_address = NULL;
desc->dsc_length = length;
desc->dsc_scale = (SCHAR) scale;
desc->dsc_sub_type = sub_type;
switch (blr_type)
{
case blr_text:
desc->dsc_dtype = dtype_text;
desc->setTextType(INTL_CS_COLL_TO_TTYPE(charset, collation));
break;
case blr_varying:
desc->dsc_dtype = dtype_varying;
desc->dsc_length += sizeof(USHORT);
desc->setTextType(INTL_CS_COLL_TO_TTYPE(charset, collation));
break;
case blr_short:
desc->dsc_length = sizeof(SSHORT);
desc->dsc_dtype = dtype_short;
break;
case blr_long:
desc->dsc_length = sizeof(SLONG);
desc->dsc_dtype = dtype_long;
break;
case blr_int64:
desc->dsc_length = sizeof(SINT64);
desc->dsc_dtype = dtype_int64;
break;
case blr_quad:
desc->dsc_length = 2 * sizeof(SLONG);
desc->dsc_dtype = dtype_quad;
break;
case blr_float:
desc->dsc_length = sizeof(float);
desc->dsc_dtype = dtype_real;
break;
case blr_double:
case blr_d_float:
desc->dsc_length = sizeof(double);
desc->dsc_dtype = dtype_double;
break;
case blr_timestamp:
desc->dsc_length = 2 * sizeof(SLONG);
desc->dsc_dtype = dtype_timestamp;
break;
case blr_sql_date:
desc->dsc_length = sizeof(SLONG);
desc->dsc_dtype = dtype_sql_date;
break;
case blr_sql_time:
desc->dsc_length = sizeof(ULONG);
desc->dsc_dtype = dtype_sql_time;
break;
case blr_blob:
desc->dsc_length = 2 * sizeof(SLONG);
desc->dsc_dtype = dtype_blob;
if (sub_type == isc_blob_text)
{
fb_assert(charset <= MAX_SCHAR);
desc->dsc_scale = (SCHAR) charset;
desc->dsc_flags = collation << 8; // collation of blob
}
break;
case blr_cstring:
desc->dsc_dtype = dtype_cstring;
desc->setTextType(INTL_CS_COLL_TO_TTYPE(charset, collation));
break;
default:
fb_assert(FALSE);
desc->dsc_dtype = dtype_unknown;
return false;
break;
}
return true;
}
int DSC_string_length(const dsc* desc)
{
/**************************************
*
* D S C _ s t r i n g _ l e n g t h
*
**************************************
*
* Functional description
* Estimate length of string (in bytes) based on descriptor.
* Estimated length assumes representing string in
* narrow-char ASCII format.
*
* Note that this strips off the short at the
* start of dtype_varying, and the NULL for dtype_cstring.
*
**************************************/
switch (desc->dsc_dtype)
{
case dtype_text:
return desc->dsc_length;
case dtype_cstring:
return desc->dsc_length - 1;
case dtype_varying:
return desc->dsc_length - sizeof(USHORT);
default:
if (!DTYPE_IS_EXACT(desc->dsc_dtype) || desc->dsc_scale == 0)
return (int) _DSC_convert_to_text_length[desc->dsc_dtype];
if (desc->dsc_scale < 0)
return (int) _DSC_convert_to_text_length[desc->dsc_dtype] + 1;
return (int) _DSC_convert_to_text_length[desc->dsc_dtype] + desc->dsc_scale;
}
}
const TEXT *DSC_dtype_tostring(UCHAR dtype)
{
/**************************************
*
* D S C _ d t y p e _ t o s t r i n g
*
**************************************
*
* Functional description
* Convert a datatype to its textual representation
*
**************************************/
if (dtype < FB_NELEM(DSC_dtype_names))
return DSC_dtype_names[dtype];
return "<unknown>";
}
void DSC_get_dtype_name(const dsc* desc, TEXT * buffer, USHORT len)
{
/**************************************
*
* D S C _ g e t _ d t y p e _ n a m e
*
**************************************
*
* Functional description
* Convert a datatype to its textual representation
*
**************************************/
// This function didn't put a string terminator even though
// it's calling strncpy that doesn't put it if source > target.
strncpy(buffer, DSC_dtype_tostring(desc->dsc_dtype), len);
buffer[len - 1] = 0;
}
const char* dsc::typeToText() const
{
switch (dsc_dtype)
{
case dtype_unknown:
return "unknown";
case dtype_text:
return "char";
case dtype_cstring:
return "cstring";
case dtype_varying:
return "varchar";
case dtype_packed:
return "packed";
case dtype_byte:
return "byte";
case dtype_short:
return "smallint";
case dtype_long:
return "integer";
case dtype_quad:
return "quad";
case dtype_real:
return "float";
case dtype_double:
return "double precision";
case dtype_d_float:
return "d_float";
case dtype_sql_date:
return "date";
case dtype_sql_time:
return "time";
case dtype_timestamp:
return "timestamp";
case dtype_blob:
return "blob";
case dtype_array:
return "array";
case dtype_int64:
return "bigint";
case dtype_dbkey:
return "dbkey";
default:
return "out of range";
}
}
#ifdef DEV_BUILD
void dsc::address32bit() const
{
/**************************************
*
* a d d r e s s 3 2 b i t
*
**************************************
*
* Functional description
* Validates dsc_address member to fit into 4-byte integer.
*
**************************************/
#if SIZEOF_VOID_P > 4
FB_UINT64 addr = (FB_UINT64)(IPTR) dsc_address;
fb_assert(addr == (addr & 0xFFFFFFFF));
#endif
}
static bool validate_dsc_tables()
{
/**************************************
*
* v a l i d a t e _ d s c _ t a b l e s
*
**************************************
*
* Functional description
* Validate tables that are used to describe
* operations on descriptors. Note that this function
* is called as part of a DEV_BUILD assertion check
* only once per server.
*
* WARNING: the fprintf's are commented out because trying to print
* to stderr when the server is running detached will trash
* server memory. If you uncomment the printf's and build a
* kit, make sure that you run that server with the -d flag
* so it won't detach from its controlling terminal.
*
**************************************/
for (BYTE op1 = dtype_unknown; op1 < DTYPE_TYPE_MAX; op1++)
{
for (BYTE op2 = dtype_unknown; op2 < DTYPE_TYPE_MAX; op2++)
{
if ((DSC_add_result[op1][op2] >= DTYPE_TYPE_MAX) &&
(DSC_add_result[op1][op2] != DTYPE_CANNOT))
{
/*
fprintf (stderr, "DSC_add_result [%d][%d] is %d, invalid.\n",
op1, op2, DSC_add_result [op1][op2]);
*/
return false;
}
// Addition operator must be communitive
if (DSC_add_result[op1][op2] != DSC_add_result[op2][op1])
{
/*
fprintf (stderr,
"Not commutative: DSC_add_result[%d][%d] = %d, ... [%d][%d] = %d\n",
op1, op2, DSC_add_result [op1][op2],
op2, op1, DSC_add_result [op2][op1] );
*/
return false;
}
// Difficult to validate Subtraction
if ((DSC_sub_result[op1][op2] >= DTYPE_TYPE_MAX) &&
(DSC_sub_result[op1][op2] != DTYPE_CANNOT))
{
/*
fprintf (stderr, "DSC_sub_result [%d][%d] is %d, invalid.\n",
op1, op2, DSC_sub_result [op1][op2]);
*/
return false;
}
// Multiplication operator must be commutative
if (DSC_multiply_result[op1][op2] != DSC_multiply_result[op2][op1])
{
/*
fprintf (stderr,
"Not commutative: DSC_multiply_result [%d][%d] = %d,\n\t... [%d][%d] = %d\n",
op1, op2, DSC_multiply_result [op1][op2],
op2, op1, DSC_multiply_result [op2][op1]);
*/
return false;
}
// Multiplication operator must be communitive
if (DSC_multiply_blr4_result[op1][op2] != DSC_multiply_blr4_result[op2][op1])
{
/*
fprintf (stderr,
"Not commutative: DSC_multiply_blr4_result [%d][%d] = %d\n\
\t... [%d][%d] = %d\n",
op1, op2, DSC_multiply_blr4_result [op1][op2],
op2, op1, DSC_multiply_blr4_result [op2][op1] );
*/
return false;
}
}
}
return true;
}
#endif // DEV_BUILD
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