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/*--------
* Module: pgtypes.c
*
* Description: This module contains routines for getting information
* about the supported Postgres data types. Only the
* function pgtype_to_sqltype() returns an unknown condition.
* All other functions return a suitable default so that
* even data types that are not directly supported can be
* used (it is handled as char data).
*
* Classes: n/a
*
* API functions: none
*
* Comments: See "notice.txt" for copyright and license information.
*--------
*/
#include "pgtypes.h"
#include "dlg_specific.h"
#include "statement.h"
#include "connection.h"
#include "environ.h"
#include "qresult.h"
Int4 getCharColumnSize(StatementClass *stmt, Int4 type, int col, int handle_unknown_size_as);
/*
* these are the types we support. all of the pgtype_ functions should
* return values for each one of these.
* Even types not directly supported are handled as character types
* so all types should work (points, etc.)
*/
/*
* ALL THESE TYPES ARE NO LONGER REPORTED in SQLGetTypeInfo. Instead, all
* the SQL TYPES are reported and mapped to a corresponding Postgres Type
*/
/*
Int4 pgtypes_defined[] = {
PG_TYPE_CHAR,
PG_TYPE_CHAR2,
PG_TYPE_CHAR4,
PG_TYPE_CHAR8,
PG_TYPE_CHAR16,
PG_TYPE_NAME,
PG_TYPE_VARCHAR,
PG_TYPE_BPCHAR,
PG_TYPE_DATE,
PG_TYPE_TIME,
PG_TYPE_TIME_WITH_TMZONE,
PG_TYPE_DATETIME,
PG_TYPE_ABSTIME,
PG_TYPE_TIMESTAMP_NO_TMZONE,
PG_TYPE_TIMESTAMP,
PG_TYPE_TEXT,
PG_TYPE_INT2,
PG_TYPE_INT4,
PG_TYPE_FLOAT4,
PG_TYPE_FLOAT8,
PG_TYPE_OID,
PG_TYPE_MONEY,
PG_TYPE_BOOL,
PG_TYPE_BYTEA,
PG_TYPE_LO_UNDEFINED,
0 };
*/
/* These are NOW the SQL Types reported in SQLGetTypeInfo. */
Int2 sqlTypes[] = {
SQL_BIGINT,
/* SQL_BINARY, -- Commented out because VarBinary is more correct. */
SQL_BIT,
SQL_CHAR,
#if (ODBCVER >= 0x0300)
SQL_TYPE_DATE,
#endif /* ODBCVER */
SQL_DATE,
SQL_DECIMAL,
SQL_DOUBLE,
SQL_FLOAT,
SQL_INTEGER,
SQL_LONGVARBINARY,
SQL_LONGVARCHAR,
SQL_NUMERIC,
SQL_REAL,
SQL_SMALLINT,
#if (ODBCVER >= 0x0300)
SQL_TYPE_TIME,
SQL_TYPE_TIMESTAMP,
#endif /* ODBCVER */
SQL_TIME,
SQL_TIMESTAMP,
SQL_TINYINT,
SQL_VARBINARY,
SQL_VARCHAR,
#ifdef UNICODE_SUPPORT
SQL_WCHAR,
SQL_WVARCHAR,
SQL_WLONGVARCHAR,
#endif /* UNICODE_SUPPORT */
0
};
#if (ODBCVER >= 0x0300) && defined(ODBCINT64)
#define ALLOWED_C_BIGINT SQL_C_SBIGINT
/* #define ALLOWED_C_BIGINT SQL_C_CHAR */ /* Delphi should be either ? */
#else
#define ALLOWED_C_BIGINT SQL_C_CHAR
#endif
Int4
sqltype_to_pgtype(StatementClass *stmt, SWORD fSqlType)
{
Int4 pgType;
ConnectionClass *conn = SC_get_conn(stmt);
ConnInfo *ci = &(conn->connInfo);
switch (fSqlType)
{
case SQL_BINARY:
pgType = PG_TYPE_BYTEA;
break;
case SQL_CHAR:
pgType = PG_TYPE_BPCHAR;
break;
#ifdef UNICODE_SUPPORT
case SQL_WCHAR:
pgType = PG_TYPE_BPCHAR;
break;
#endif /* UNICODE_SUPPORT */
case SQL_BIT:
pgType = ci->drivers.bools_as_char ? PG_TYPE_CHAR : PG_TYPE_BOOL;
break;
#if (ODBCVER >= 0x0300)
case SQL_TYPE_DATE:
#else
case SQL_DATE:
#endif /* ODBCVER */
pgType = PG_TYPE_DATE;
break;
case SQL_DOUBLE:
case SQL_FLOAT:
pgType = PG_TYPE_FLOAT8;
break;
case SQL_DECIMAL:
case SQL_NUMERIC:
pgType = PG_TYPE_NUMERIC;
break;
case SQL_BIGINT:
pgType = PG_TYPE_INT8;
break;
case SQL_INTEGER:
pgType = PG_TYPE_INT4;
break;
case SQL_LONGVARBINARY:
if (ci->bytea_as_longvarbinary)
pgType = PG_TYPE_BYTEA;
else
pgType = conn->lobj_type;
break;
case SQL_LONGVARCHAR:
pgType = ci->drivers.text_as_longvarchar ? PG_TYPE_TEXT : PG_TYPE_VARCHAR;
break;
#ifdef UNICODE_SUPPORT
case SQL_WLONGVARCHAR:
pgType = ci->drivers.text_as_longvarchar ? PG_TYPE_TEXT : PG_TYPE_VARCHAR;
break;
#endif /* UNICODE_SUPPORT */
case SQL_REAL:
pgType = PG_TYPE_FLOAT4;
break;
case SQL_SMALLINT:
case SQL_TINYINT:
pgType = PG_TYPE_INT2;
break;
case SQL_TIME:
#if (ODBCVER >= 0x0300)
case SQL_TYPE_TIME:
#endif /* ODBCVER */
pgType = PG_TYPE_TIME;
break;
case SQL_TIMESTAMP:
#if (ODBCVER >= 0x0300)
case SQL_TYPE_TIMESTAMP:
#endif /* ODBCVER */
pgType = PG_TYPE_DATETIME;
break;
case SQL_VARBINARY:
pgType = PG_TYPE_BYTEA;
break;
case SQL_VARCHAR:
pgType = PG_TYPE_VARCHAR;
break;
#if UNICODE_SUPPORT
case SQL_WVARCHAR:
pgType = PG_TYPE_VARCHAR;
break;
#endif /* UNICODE_SUPPORT */
default:
pgType = 0; /* ??? */
break;
}
return pgType;
}
/*
* There are two ways of calling this function:
*
* 1. When going through the supported PG types (SQLGetTypeInfo)
*
* 2. When taking any type id (SQLColumns, SQLGetData)
*
* The first type will always work because all the types defined are returned here.
* The second type will return a default based on global parameter when it does not
* know. This allows for supporting
* types that are unknown. All other pg routines in here return a suitable default.
*/
Int2
pgtype_to_concise_type(StatementClass *stmt, Int4 type)
{
ConnectionClass *conn = SC_get_conn(stmt);
ConnInfo *ci = &(conn->connInfo);
#if (ODBCVER >= 0x0300)
EnvironmentClass *env = (EnvironmentClass *) (conn->henv);
#endif /* ODBCVER */
switch (type)
{
case PG_TYPE_CHAR:
case PG_TYPE_CHAR2:
case PG_TYPE_CHAR4:
case PG_TYPE_CHAR8:
case PG_TYPE_NAME:
return SQL_CHAR;
#ifdef UNICODE_SUPPORT
case PG_TYPE_BPCHAR:
return conn->unicode ? SQL_WCHAR : SQL_CHAR;
case PG_TYPE_VARCHAR:
return conn->unicode ? SQL_WVARCHAR : SQL_VARCHAR;
case PG_TYPE_TEXT:
return ci->drivers.text_as_longvarchar ?
(conn->unicode ? SQL_WLONGVARCHAR : SQL_LONGVARCHAR) :
(conn->unicode ? SQL_WVARCHAR : SQL_VARCHAR);
#else
case PG_TYPE_BPCHAR:
return SQL_CHAR;
case PG_TYPE_VARCHAR:
return SQL_VARCHAR;
case PG_TYPE_TEXT:
return ci->drivers.text_as_longvarchar ? SQL_LONGVARCHAR : SQL_VARCHAR;
#endif /* UNICODE_SUPPORT */
case PG_TYPE_BYTEA:
if (ci->bytea_as_longvarbinary)
return SQL_LONGVARBINARY;
else
return SQL_VARBINARY;
case PG_TYPE_LO_UNDEFINED:
return SQL_LONGVARBINARY;
case PG_TYPE_INT2:
return SQL_SMALLINT;
case PG_TYPE_OID:
case PG_TYPE_XID:
case PG_TYPE_INT4:
return SQL_INTEGER;
/* Change this to SQL_BIGINT for ODBC v3 bjm 2001-01-23 */
case PG_TYPE_INT8:
if (ci->int8_as != 0)
return ci->int8_as;
if (conn->ms_jet)
return SQL_NUMERIC; /* maybe a little better than SQL_VARCHAR */
#if (ODBCVER >= 0x0300)
return SQL_BIGINT;
#else
return SQL_VARCHAR;
#endif /* ODBCVER */
case PG_TYPE_NUMERIC:
return SQL_NUMERIC;
case PG_TYPE_FLOAT4:
return SQL_REAL;
case PG_TYPE_FLOAT8:
return SQL_FLOAT;
case PG_TYPE_DATE:
#if (ODBCVER >= 0x0300)
if (EN_is_odbc3(env))
return SQL_TYPE_DATE;
#endif /* ODBCVER */
return SQL_DATE;
case PG_TYPE_TIME:
#if (ODBCVER >= 0x0300)
if (EN_is_odbc3(env))
return SQL_TYPE_TIME;
#endif /* ODBCVER */
return SQL_TIME;
case PG_TYPE_ABSTIME:
case PG_TYPE_DATETIME:
case PG_TYPE_TIMESTAMP_NO_TMZONE:
case PG_TYPE_TIMESTAMP:
#if (ODBCVER >= 0x0300)
if (EN_is_odbc3(env))
return SQL_TYPE_TIMESTAMP;
#endif /* ODBCVER */
return SQL_TIMESTAMP;
case PG_TYPE_MONEY:
return SQL_FLOAT;
case PG_TYPE_BOOL:
return ci->drivers.bools_as_char ? SQL_CHAR : SQL_BIT;
default:
/*
* first, check to see if 'type' is in list. If not, look up
* with query. Add oid, name to list. If it's already in
* list, just return.
*/
/* hack until permanent type is available */
if (type == stmt->hdbc->lobj_type)
return SQL_LONGVARBINARY;
return ci->drivers.unknowns_as_longvarchar ? SQL_LONGVARCHAR : SQL_VARCHAR;
}
}
Int2
pgtype_to_sqldesctype(StatementClass *stmt, Int4 type)
{
Int2 rettype;
switch (rettype = pgtype_to_concise_type(stmt, type))
{
#if (ODBCVER >= 0x0300)
case SQL_TYPE_DATE:
case SQL_TYPE_TIME:
case SQL_TYPE_TIMESTAMP:
return SQL_DATETIME;
#endif /* ODBCVER */
}
return rettype;
}
Int2
pgtype_to_datetime_sub(StatementClass *stmt, Int4 type)
{
switch (pgtype_to_concise_type(stmt, type))
{
#if (ODBCVER >= 0x0300)
case SQL_TYPE_DATE:
return SQL_CODE_DATE;
case SQL_TYPE_TIME:
return SQL_CODE_TIME;
case SQL_TYPE_TIMESTAMP:
return SQL_CODE_TIMESTAMP;
#endif /* ODBCVER */
}
return -1;
}
Int2
pgtype_to_ctype(StatementClass *stmt, Int4 type)
{
ConnectionClass *conn = SC_get_conn(stmt);
ConnInfo *ci = &(conn->connInfo);
#if (ODBCVER >= 0x0300)
EnvironmentClass *env = (EnvironmentClass *) (conn->henv);
#endif /* ODBCVER */
switch (type)
{
case PG_TYPE_INT8:
#if (ODBCVER >= 0x0300)
if (!conn->ms_jet)
return ALLOWED_C_BIGINT;
#endif /* ODBCVER */
return SQL_C_CHAR;
case PG_TYPE_NUMERIC:
return SQL_C_CHAR;
case PG_TYPE_INT2:
return SQL_C_SSHORT;
case PG_TYPE_OID:
case PG_TYPE_XID:
case PG_TYPE_INT4:
return SQL_C_SLONG;
case PG_TYPE_FLOAT4:
return SQL_C_FLOAT;
case PG_TYPE_FLOAT8:
return SQL_C_DOUBLE;
case PG_TYPE_DATE:
#if (ODBCVER >= 0x0300)
if (EN_is_odbc3(env))
return SQL_C_TYPE_DATE;
#endif /* ODBCVER */
return SQL_C_DATE;
case PG_TYPE_TIME:
#if (ODBCVER >= 0x0300)
if (EN_is_odbc3(env))
return SQL_C_TYPE_TIME;
#endif /* ODBCVER */
return SQL_C_TIME;
case PG_TYPE_ABSTIME:
case PG_TYPE_DATETIME:
case PG_TYPE_TIMESTAMP_NO_TMZONE:
case PG_TYPE_TIMESTAMP:
#if (ODBCVER >= 0x0300)
if (EN_is_odbc3(env))
return SQL_C_TYPE_TIMESTAMP;
#endif /* ODBCVER */
return SQL_C_TIMESTAMP;
case PG_TYPE_MONEY:
return SQL_C_FLOAT;
case PG_TYPE_BOOL:
return ci->drivers.bools_as_char ? SQL_C_CHAR : SQL_C_BIT;
case PG_TYPE_BYTEA:
return SQL_C_BINARY;
case PG_TYPE_LO_UNDEFINED:
return SQL_C_BINARY;
#ifdef UNICODE_SUPPORT
case PG_TYPE_BPCHAR:
case PG_TYPE_VARCHAR:
case PG_TYPE_TEXT:
if (conn->unicode && ! conn->ms_jet && ! stmt->manual_result)
return SQL_C_WCHAR;
return SQL_C_CHAR;
#endif /* UNICODE_SUPPORT */
default:
/* hack until permanent type is available */
if (type == stmt->hdbc->lobj_type)
return SQL_C_BINARY;
return SQL_C_CHAR;
}
}
const char *
pgtype_to_name(StatementClass *stmt, Int4 type)
{
ConnectionClass *conn = SC_get_conn(stmt);
switch (type)
{
case PG_TYPE_CHAR:
return "char";
case PG_TYPE_CHAR2:
return "char2";
case PG_TYPE_CHAR4:
return "char4";
case PG_TYPE_CHAR8:
return "char8";
case PG_TYPE_INT8:
return "int8";
case PG_TYPE_NUMERIC:
return "numeric";
case PG_TYPE_VARCHAR:
return "varchar";
case PG_TYPE_BPCHAR:
return "char";
case PG_TYPE_TEXT:
return "text";
case PG_TYPE_NAME:
return "name";
case PG_TYPE_INT2:
return "int2";
case PG_TYPE_OID:
return "oid";
case PG_TYPE_INT4:
return "int4";
case PG_TYPE_FLOAT4:
return "float4";
case PG_TYPE_FLOAT8:
return "float8";
case PG_TYPE_DATE:
return "date";
case PG_TYPE_TIME:
return "time";
case PG_TYPE_ABSTIME:
return "abstime";
case PG_TYPE_DATETIME:
if (PG_VERSION_GE(conn, 7.0))
return "timestamp with time zone";
else
return "datetime";
case PG_TYPE_TIMESTAMP_NO_TMZONE:
return "timestamp without time zone";
case PG_TYPE_TIMESTAMP:
return "timestamp";
case PG_TYPE_MONEY:
return "money";
case PG_TYPE_BOOL:
return "bool";
case PG_TYPE_BYTEA:
return "bytea";
case PG_TYPE_LO_UNDEFINED:
return PG_TYPE_LO_NAME;
default:
/* hack until permanent type is available */
if (type == stmt->hdbc->lobj_type)
return PG_TYPE_LO_NAME;
/*
* "unknown" can actually be used in alter table because it is
* a real PG type!
*/
return "unknown";
}
}
static Int2
getNumericDecimalDigits(StatementClass *stmt, Int4 type, int col)
{
Int4 atttypmod = -1, default_decimal_digits = 6;
QResultClass *result;
ColumnInfoClass *flds;
mylog("getNumericDecimalDigits: type=%d, col=%d\n", type, col);
if (col < 0)
return default_decimal_digits;
result = SC_get_Curres(stmt);
/*
* Manual Result Sets -- use assigned column width (i.e., from
* set_tuplefield_string)
*/
if (stmt->manual_result)
{
flds = result->fields;
if (flds)
{
atttypmod = flds->atttypmod[col];
if (atttypmod < 0 && flds->adtsize[col] > 0)
return flds->adtsize[col];
}
if (atttypmod < 0)
return default_decimal_digits;
}
else
atttypmod = QR_get_atttypmod(result, col);
if (atttypmod > -1)
return (atttypmod & 0xffff);
else
{
Int4 dsp_size = QR_get_display_size(result, col);
if (dsp_size <= 0)
return default_decimal_digits;
if (dsp_size < 5)
dsp_size = 5;
return dsp_size;
}
}
static Int4
getNumericColumnSize(StatementClass *stmt, Int4 type, int col)
{
Int4 atttypmod = -1, max_column_size = PG_NUMERIC_MAX_PRECISION + PG_NUMERIC_MAX_SCALE, default_column_size = 28;
QResultClass *result;
ColumnInfoClass *flds;
mylog("getNumericColumnSize: type=%d, col=%d\n", type, col);
if (col < 0)
return default_column_size;
result = SC_get_Curres(stmt);
/*
* Manual Result Sets -- use assigned column width (i.e., from
* set_tuplefield_string)
*/
if (stmt->manual_result)
{
flds = result->fields;
if (flds)
{
atttypmod = flds->atttypmod[col];
if (atttypmod < 0 && flds->adtsize[col] > 0)
return 2 * flds->adtsize[col];
}
if (atttypmod < 0)
return default_column_size;
}
else
atttypmod = QR_get_atttypmod(result, col);
if (atttypmod > -1)
return (atttypmod >> 16) & 0xffff;
else
{
Int4 dsp_size = QR_get_display_size(result, col);
if (dsp_size <= 0)
return default_column_size;
dsp_size *= 2;
if (dsp_size < 10)
dsp_size = 10;
return dsp_size;
}
}
Int4
getCharColumnSize(StatementClass *stmt, Int4 type, int col, int handle_unknown_size_as)
{
int p = -1, attlen = -1,
maxsize;
QResultClass *result;
ColumnInfoClass *flds;
ConnectionClass *conn = SC_get_conn(stmt);
ConnInfo *ci = &(conn->connInfo);
mylog("getCharColumnSize: type=%d, col=%d, unknown = %d\n", type, col, handle_unknown_size_as);
/* Assign Maximum size based on parameters */
switch (type)
{
case PG_TYPE_TEXT:
if (ci->drivers.text_as_longvarchar)
maxsize = ci->drivers.max_longvarchar_size;
else
maxsize = ci->drivers.max_varchar_size;
break;
case PG_TYPE_VARCHAR:
case PG_TYPE_BPCHAR:
maxsize = ci->drivers.max_varchar_size;
break;
default:
if (ci->drivers.unknowns_as_longvarchar)
maxsize = ci->drivers.max_longvarchar_size;
else
maxsize = ci->drivers.max_varchar_size;
break;
}
if (maxsize == TEXT_FIELD_SIZE + 1) /* magic length for testing */
{
if (PG_VERSION_GE(SC_get_conn(stmt), 7.1))
maxsize = 0;
else
maxsize = TEXT_FIELD_SIZE;
}
/*
* Static ColumnSize (i.e., the Maximum ColumnSize of the datatype) This
* has nothing to do with a result set.
*/
if (col < 0)
return maxsize;
result = SC_get_Curres(stmt);
/*
* Manual Result Sets -- use assigned column width (i.e., from
* set_tuplefield_string)
*/
if (stmt->manual_result)
{
flds = result->fields;
if (flds)
return flds->adtsize[col];
else
return maxsize;
}
p = QR_get_display_size(result, col); /* longest */
attlen = QR_get_atttypmod(result, col);
/* Size is unknown -- handle according to parameter */
if (attlen > 0) /* maybe the length is known */
{
if (attlen >= p)
return attlen;
switch (type)
{
case PG_TYPE_VARCHAR:
case PG_TYPE_BPCHAR:
if (conn->unicode || conn->ms_jet)
return attlen;
#if (ODBCVER >= 0x0300)
return attlen;
#endif /* ODBCVER */
return p;
}
}
/* The type is really unknown */
if (type == PG_TYPE_BPCHAR || handle_unknown_size_as == UNKNOWNS_AS_LONGEST)
{
mylog("getCharColumnSize: LONGEST: p = %d\n", p);
if (p >= 0)
return p;
}
if (p > maxsize)
maxsize = p;
if (handle_unknown_size_as == UNKNOWNS_AS_MAX)
return maxsize;
else /* handle_unknown_size_as == DONT_KNOW */
return -1;
}
static Int2
getTimestampDecimalDigits(StatementClass *stmt, Int4 type, int col)
{
ConnectionClass *conn = SC_get_conn(stmt);
Int4 atttypmod;
QResultClass *result;
ColumnInfoClass *flds;
mylog("getTimestampDecimalDigits: type=%d, col=%d\n", type, col);
if (col < 0)
return 0;
if (PG_VERSION_LT(conn, 7.2))
return 0;
result = SC_get_Curres(stmt);
/*
* Manual Result Sets -- use assigned column width (i.e., from
* set_tuplefield_string)
*/
atttypmod = 0;
if (stmt->manual_result)
{
flds = result->fields;
if (flds)
atttypmod = flds->atttypmod[col];
mylog("atttypmod1=%d\n", atttypmod);
}
else
atttypmod = QR_get_atttypmod(result, col);
mylog("atttypmod2=%d\n", atttypmod);
return (atttypmod > -1 ? atttypmod : 6);
}
static Int4
getTimestampColumnSize(StatementClass *stmt, Int4 type, int col)
{
Int4 fixed,
scale;
mylog("getTimestampColumnSize: type=%d, col=%d\n", type, col);
switch (type)
{
case PG_TYPE_TIME:
fixed = 8;
break;
case PG_TYPE_TIME_WITH_TMZONE:
fixed = 11;
break;
case PG_TYPE_TIMESTAMP_NO_TMZONE:
fixed = 19;
break;
default:
if (USE_ZONE)
fixed = 22;
else
fixed = 19;
break;
}
scale = getTimestampDecimalDigits(stmt, type, col);
return (scale > 0) ? fixed + 1 + scale : fixed;
}
/*
* This corresponds to "precision" in ODBC 2.x.
*
* For PG_TYPE_VARCHAR, PG_TYPE_BPCHAR, PG_TYPE_NUMERIC, SQLColumns will
* override this length with the atttypmod length from pg_attribute .
*
* If col >= 0, then will attempt to get the info from the result set.
* This is used for functions SQLDescribeCol and SQLColAttributes.
*/
Int4
pgtype_column_size(StatementClass *stmt, Int4 type, int col, int handle_unknown_size_as)
{
ConnectionClass *conn = SC_get_conn(stmt);
ConnInfo *ci = &(conn->connInfo);
switch (type)
{
case PG_TYPE_CHAR:
return 1;
case PG_TYPE_CHAR2:
return 2;
case PG_TYPE_CHAR4:
return 4;
case PG_TYPE_CHAR8:
return 8;
case PG_TYPE_NAME:
{
int value = 0;
#ifdef NAME_FIELD_SIZE
value = NAME_FIELD_SIZE;
#endif /* NAME_FIELD_SIZE */
if (0 == value)
{
if (PG_VERSION_GE(conn, 7.3))
value = NAMEDATALEN_V73;
else
value = NAMEDATALEN_V72;
}
return value;
}
case PG_TYPE_INT2:
return 5;
case PG_TYPE_OID:
case PG_TYPE_XID:
case PG_TYPE_INT4:
return 10;
case PG_TYPE_INT8:
return 19; /* signed */
case PG_TYPE_NUMERIC:
return getNumericColumnSize(stmt, type, col);
case PG_TYPE_FLOAT4:
case PG_TYPE_MONEY:
return 7;
case PG_TYPE_FLOAT8:
return 15;
case PG_TYPE_DATE:
return 10;
case PG_TYPE_TIME:
return 8;
case PG_TYPE_ABSTIME:
case PG_TYPE_TIMESTAMP:
return 22;
case PG_TYPE_DATETIME:
case PG_TYPE_TIMESTAMP_NO_TMZONE:
/* return 22; */
return getTimestampColumnSize(stmt, type, col);
case PG_TYPE_BOOL:
return ci->true_is_minus1 ? 2 : 1;
case PG_TYPE_LO_UNDEFINED:
return SQL_NO_TOTAL;
default:
if (type == stmt->hdbc->lobj_type) /* hack until permanent
* type is available */
return SQL_NO_TOTAL;
if (PG_TYPE_BYTEA == type && ci->bytea_as_longvarbinary)
return SQL_NO_TOTAL;
/* Handle Character types and unknown types */
return getCharColumnSize(stmt, type, col, handle_unknown_size_as);
}
}
/*
* precision in ODBC 3.x.
*/
Int4
pgtype_precision(StatementClass *stmt, Int4 type, int col, int handle_unknown_size_as)
{
switch (type)
{
case PG_TYPE_NUMERIC:
return getNumericColumnSize(stmt, type, col);
case PG_TYPE_DATETIME:
case PG_TYPE_TIMESTAMP_NO_TMZONE:
return getTimestampDecimalDigits(stmt, type, col);
}
return -1;
}
Int4
pgtype_display_size(StatementClass *stmt, Int4 type, int col, int handle_unknown_size_as)
{
int dsize;
switch (type)
{
case PG_TYPE_INT2:
return 6;
case PG_TYPE_OID:
case PG_TYPE_XID:
return 10;
case PG_TYPE_INT4:
return 11;
case PG_TYPE_INT8:
return 20; /* signed: 19 digits + sign */
case PG_TYPE_NUMERIC:
dsize = getNumericColumnSize(stmt, type, col);
return dsize < 0 ? dsize : dsize + 2;
case PG_TYPE_MONEY:
return 15; /* ($9,999,999.99) */
case PG_TYPE_FLOAT4:
return 13;
case PG_TYPE_FLOAT8:
return 22;
/* Character types use regular precision */
default:
return pgtype_column_size(stmt, type, col, handle_unknown_size_as);
}
}
/*
* The length in bytes of data transferred on an SQLGetData, SQLFetch,
* or SQLFetchScroll operation if SQL_C_DEFAULT is specified.
*/
Int4
pgtype_buffer_length(StatementClass *stmt, Int4 type, int col, int handle_unknown_size_as)
{
ConnectionClass *conn = SC_get_conn(stmt);
switch (type)
{
case PG_TYPE_INT2:
return 2; /* sizeof(SQLSMALLINT) */
case PG_TYPE_OID:
case PG_TYPE_XID:
case PG_TYPE_INT4:
return 4; /* sizeof(SQLINTEGER) */
case PG_TYPE_INT8:
if (SQL_C_CHAR == pgtype_to_ctype(stmt, type))
return 20; /* signed: 19 digits + sign */
return 8; /* sizeof(SQLSBININT) */
case PG_TYPE_NUMERIC:
return getNumericColumnSize(stmt, type, col) + 2;
case PG_TYPE_FLOAT4:
case PG_TYPE_MONEY:
return 4; /* sizeof(SQLREAL) */
case PG_TYPE_FLOAT8:
return 8; /* sizeof(SQLFLOAT) */
case PG_TYPE_DATE:
case PG_TYPE_TIME:
return 6; /* sizeof(DATE(TIME)_STRUCT) */
case PG_TYPE_ABSTIME:
case PG_TYPE_DATETIME:
case PG_TYPE_TIMESTAMP:
case PG_TYPE_TIMESTAMP_NO_TMZONE:
return 16; /* sizeof(TIMESTAMP_STRUCT) */
/* Character types use the default precision */
case PG_TYPE_VARCHAR:
case PG_TYPE_BPCHAR:
{
int coef = 1;
Int4 prec = pgtype_column_size(stmt, type, col, handle_unknown_size_as), maxvarc;
if (conn->unicode)
return prec * 2;
/* after 7.2 */
if (PG_VERSION_GE(conn, 7.2))
coef = 3;
else
if ((conn->connInfo).lf_conversion)
/* CR -> CR/LF */
coef = 2;
if (coef == 1)
return prec;
maxvarc = conn->connInfo.drivers.max_varchar_size;
if (prec <= maxvarc && prec * coef > maxvarc)
return maxvarc;
return coef * prec;
}
default:
return pgtype_column_size(stmt, type, col, handle_unknown_size_as);
}
}
/*
*/
Int4
pgtype_desclength(StatementClass *stmt, Int4 type, int col, int handle_unknown_size_as)
{
switch (type)
{
case PG_TYPE_INT2:
return 2;
case PG_TYPE_OID:
case PG_TYPE_XID:
case PG_TYPE_INT4:
return 4;
case PG_TYPE_INT8:
return 20; /* signed: 19 digits + sign */
case PG_TYPE_NUMERIC:
return getNumericColumnSize(stmt, type, col) + 2;
case PG_TYPE_FLOAT4:
case PG_TYPE_MONEY:
return 4;
case PG_TYPE_FLOAT8:
return 8;
case PG_TYPE_DATE:
case PG_TYPE_TIME:
case PG_TYPE_ABSTIME:
case PG_TYPE_DATETIME:
case PG_TYPE_TIMESTAMP_NO_TMZONE:
case PG_TYPE_TIMESTAMP:
case PG_TYPE_VARCHAR:
case PG_TYPE_BPCHAR:
return pgtype_column_size(stmt, type, col, handle_unknown_size_as);
default:
return pgtype_column_size(stmt, type, col, handle_unknown_size_as);
}
}
/*
* Transfer octet length.
*/
Int4
pgtype_transfer_octet_length(StatementClass *stmt, Int4 type, int col, int handle_unknown_size_as)
{
ConnectionClass *conn = SC_get_conn(stmt);
int coef = 1;
Int4 prec = pgtype_column_size(stmt, type, col, handle_unknown_size_as), maxvarc;
switch (type)
{
case PG_TYPE_VARCHAR:
case PG_TYPE_BPCHAR:
if (conn->unicode)
return prec * 2;
/* after 7.2 */
if (PG_VERSION_GE(conn, 7.2))
coef = 3;
else
if ((conn->connInfo).lf_conversion)
/* CR -> CR/LF */
coef = 2;
if (coef == 1)
return prec;
maxvarc = conn->connInfo.drivers.max_varchar_size;
if (prec <= maxvarc && prec * coef > maxvarc)
return maxvarc;
return coef * prec;
case PG_TYPE_BYTEA:
return prec;
}
return -1;
}
/*
* corrsponds to "scale" in ODBC 2.x.
*/
Int2
pgtype_decimal_digits(StatementClass *stmt, Int4 type, int col)
{
switch (type)
{
case PG_TYPE_INT2:
case PG_TYPE_OID:
case PG_TYPE_XID:
case PG_TYPE_INT4:
case PG_TYPE_INT8:
case PG_TYPE_FLOAT4:
case PG_TYPE_FLOAT8:
case PG_TYPE_MONEY:
case PG_TYPE_BOOL:
/*
* Number of digits to the right of the decimal point in
* "yyyy-mm=dd hh:mm:ss[.f...]"
*/
case PG_TYPE_ABSTIME:
case PG_TYPE_TIMESTAMP:
return 0;
case PG_TYPE_DATETIME:
case PG_TYPE_TIMESTAMP_NO_TMZONE:
/* return 0; */
return getTimestampDecimalDigits(stmt, type, col);
case PG_TYPE_NUMERIC:
return getNumericDecimalDigits(stmt, type, col);
default:
return -1;
}
}
/*
* "scale" in ODBC 3.x.
*/
Int2
pgtype_scale(StatementClass *stmt, Int4 type, int col)
{
switch (type)
{
case PG_TYPE_NUMERIC:
return getNumericDecimalDigits(stmt, type, col);
}
return -1;
}
Int2
pgtype_radix(StatementClass *stmt, Int4 type)
{
switch (type)
{
case PG_TYPE_INT2:
case PG_TYPE_OID:
case PG_TYPE_INT4:
case PG_TYPE_INT8:
case PG_TYPE_NUMERIC:
case PG_TYPE_FLOAT4:
case PG_TYPE_MONEY:
case PG_TYPE_FLOAT8:
return 10;
default:
return -1;
}
}
Int2
pgtype_nullable(StatementClass *stmt, Int4 type)
{
return SQL_NULLABLE; /* everything should be nullable */
}
Int2
pgtype_auto_increment(StatementClass *stmt, Int4 type)
{
switch (type)
{
case PG_TYPE_INT2:
case PG_TYPE_OID:
case PG_TYPE_XID:
case PG_TYPE_INT4:
case PG_TYPE_FLOAT4:
case PG_TYPE_MONEY:
case PG_TYPE_BOOL:
case PG_TYPE_FLOAT8:
case PG_TYPE_INT8:
case PG_TYPE_NUMERIC:
case PG_TYPE_DATE:
case PG_TYPE_TIME_WITH_TMZONE:
case PG_TYPE_TIME:
case PG_TYPE_ABSTIME:
case PG_TYPE_DATETIME:
case PG_TYPE_TIMESTAMP_NO_TMZONE:
case PG_TYPE_TIMESTAMP:
return FALSE;
default:
return -1;
}
}
Int2
pgtype_case_sensitive(StatementClass *stmt, Int4 type)
{
switch (type)
{
case PG_TYPE_CHAR:
case PG_TYPE_CHAR2:
case PG_TYPE_CHAR4:
case PG_TYPE_CHAR8:
case PG_TYPE_VARCHAR:
case PG_TYPE_BPCHAR:
case PG_TYPE_TEXT:
case PG_TYPE_NAME:
return TRUE;
default:
return FALSE;
}
}
Int2
pgtype_money(StatementClass *stmt, Int4 type)
{
switch (type)
{
case PG_TYPE_MONEY:
return TRUE;
default:
return FALSE;
}
}
Int2
pgtype_searchable(StatementClass *stmt, Int4 type)
{
switch (type)
{
case PG_TYPE_CHAR:
case PG_TYPE_CHAR2:
case PG_TYPE_CHAR4:
case PG_TYPE_CHAR8:
case PG_TYPE_VARCHAR:
case PG_TYPE_BPCHAR:
case PG_TYPE_TEXT:
case PG_TYPE_NAME:
return SQL_SEARCHABLE;
default:
return SQL_ALL_EXCEPT_LIKE;
}
}
Int2
pgtype_unsigned(StatementClass *stmt, Int4 type)
{
switch (type)
{
case PG_TYPE_OID:
case PG_TYPE_XID:
return TRUE;
case PG_TYPE_INT2:
case PG_TYPE_INT4:
case PG_TYPE_INT8:
case PG_TYPE_NUMERIC:
case PG_TYPE_FLOAT4:
case PG_TYPE_FLOAT8:
case PG_TYPE_MONEY:
return FALSE;
default:
return -1;
}
}
char *
pgtype_literal_prefix(StatementClass *stmt, Int4 type)
{
switch (type)
{
case PG_TYPE_INT2:
case PG_TYPE_OID:
case PG_TYPE_XID:
case PG_TYPE_INT4:
case PG_TYPE_INT8:
case PG_TYPE_NUMERIC:
case PG_TYPE_FLOAT4:
case PG_TYPE_FLOAT8:
case PG_TYPE_MONEY:
return NULL;
default:
return "'";
}
}
char *
pgtype_literal_suffix(StatementClass *stmt, Int4 type)
{
switch (type)
{
case PG_TYPE_INT2:
case PG_TYPE_OID:
case PG_TYPE_XID:
case PG_TYPE_INT4:
case PG_TYPE_INT8:
case PG_TYPE_NUMERIC:
case PG_TYPE_FLOAT4:
case PG_TYPE_FLOAT8:
case PG_TYPE_MONEY:
return NULL;
default:
return "'";
}
}
char *
pgtype_create_params(StatementClass *stmt, Int4 type)
{
switch (type)
{
case PG_TYPE_BPCHAR:
case PG_TYPE_VARCHAR:
return "max. length";
default:
return NULL;
}
}
Int2
sqltype_to_default_ctype(const ConnectionClass *conn, Int2 sqltype)
{
/*
* from the table on page 623 of ODBC 2.0 Programmer's Reference
* (Appendix D)
*/
switch (sqltype)
{
case SQL_CHAR:
case SQL_VARCHAR:
case SQL_LONGVARCHAR:
case SQL_DECIMAL:
case SQL_NUMERIC:
#if (ODBCVER < 0x0300)
case SQL_BIGINT:
return SQL_C_CHAR;
#else
return SQL_C_CHAR;
case SQL_BIGINT:
return ALLOWED_C_BIGINT;
#endif
#ifdef UNICODE_SUPPORT
case SQL_WCHAR:
case SQL_WVARCHAR:
case SQL_WLONGVARCHAR:
if (conn->ms_jet || ! conn->unicode)
return SQL_C_CHAR;
return SQL_C_WCHAR;
#endif /* UNICODE_SUPPORT */
case SQL_BIT:
return SQL_C_BIT;
case SQL_TINYINT:
return SQL_C_STINYINT;
case SQL_SMALLINT:
return SQL_C_SSHORT;
case SQL_INTEGER:
return SQL_C_SLONG;
case SQL_REAL:
return SQL_C_FLOAT;
case SQL_FLOAT:
case SQL_DOUBLE:
return SQL_C_DOUBLE;
case SQL_BINARY:
case SQL_VARBINARY:
case SQL_LONGVARBINARY:
return SQL_C_BINARY;
case SQL_DATE:
return SQL_C_DATE;
case SQL_TIME:
return SQL_C_TIME;
case SQL_TIMESTAMP:
return SQL_C_TIMESTAMP;
#if (ODBCVER >= 0x0300)
case SQL_TYPE_DATE:
return SQL_C_TYPE_DATE;
case SQL_TYPE_TIME:
return SQL_C_TYPE_TIME;
case SQL_TYPE_TIMESTAMP:
return SQL_C_TYPE_TIMESTAMP;
#endif /* ODBCVER */
default:
/* should never happen */
return SQL_C_CHAR;
}
}
Int4
ctype_length(Int2 ctype)
{
switch (ctype)
{
case SQL_C_SSHORT:
case SQL_C_SHORT:
return sizeof(SWORD);
case SQL_C_USHORT:
return sizeof(UWORD);
case SQL_C_SLONG:
case SQL_C_LONG:
return sizeof(SDWORD);
case SQL_C_ULONG:
return sizeof(UDWORD);
case SQL_C_FLOAT:
return sizeof(SFLOAT);
case SQL_C_DOUBLE:
return sizeof(SDOUBLE);
case SQL_C_BIT:
return sizeof(UCHAR);
case SQL_C_STINYINT:
case SQL_C_TINYINT:
return sizeof(SCHAR);
case SQL_C_UTINYINT:
return sizeof(UCHAR);
case SQL_C_DATE:
#if (ODBCVER >= 0x0300)
case SQL_C_TYPE_DATE:
#endif /* ODBCVER */
return sizeof(DATE_STRUCT);
case SQL_C_TIME:
#if (ODBCVER >= 0x0300)
case SQL_C_TYPE_TIME:
#endif /* ODBCVER */
return sizeof(TIME_STRUCT);
case SQL_C_TIMESTAMP:
#if (ODBCVER >= 0x0300)
case SQL_C_TYPE_TIMESTAMP:
#endif /* ODBCVER */
return sizeof(TIMESTAMP_STRUCT);
case SQL_C_BINARY:
case SQL_C_CHAR:
#ifdef UNICODE_SUPPORT
case SQL_C_WCHAR:
#endif /* UNICODE_SUPPORT */
return 0;
default: /* should never happen */
return 0;
}
}
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