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results.c
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results.c
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/*
* Module: results.c
*
* Description: This module contains functions related to
* retrieving result information through the ODBC API.
*
* Classes: n/a
*
* API functions: SQLRowCount, SQLNumResultCols, SQLDescribeCol,
* SQLColAttributes, SQLGetData, SQLFetch, SQLExtendedFetch,
* SQLMoreResults, SQLSetPos, SQLSetScrollOptions(NI),
* SQLSetCursorName, SQLGetCursorName
*
* Comments: See "readme.txt" for copyright and license information.
*-------
*/
#include "psqlodbc.h"
#include <string.h>
#include "misc.h"
#include "dlg_specific.h"
#include "environ.h"
#include "connection.h"
#include "statement.h"
#include "bind.h"
#include "qresult.h"
#include "convert.h"
#include "pgtypes.h"
#include <stdio.h>
#include <limits.h>
#include "pgapifunc.h"
/* Helper macro */
#define getEffectiveOid(conn, fi) pg_true_type((conn), (fi)->columntype, FI_type(fi))
#define NULL_IF_NULL(a) ((a) ? ((const char *)(a)) : "(null)")
RETCODE SQL_API
PGAPI_RowCount(HSTMT hstmt,
SQLLEN FAR * pcrow)
{
CSTR func = "PGAPI_RowCount";
StatementClass *stmt = (StatementClass *) hstmt;
QResultClass *res;
mylog("%s: entering...\n", func);
if (!stmt)
{
SC_log_error(func, NULL_STRING, NULL);
return SQL_INVALID_HANDLE;
}
if (stmt->proc_return > 0)
{
*pcrow = 0;
inolog("returning RowCount=%d\n", *pcrow);
return SQL_SUCCESS;
}
res = SC_get_Curres(stmt);
if (res)
{
if (stmt->status != STMT_FINISHED)
{
SC_set_error(stmt, STMT_SEQUENCE_ERROR, "Can't get row count while statement is still executing.", func);
return SQL_ERROR;
}
if (res->recent_processed_row_count >= 0)
{
*pcrow = res->recent_processed_row_count;
mylog("**** %s: THE ROWS: *pcrow = %d\n", func, *pcrow);
return SQL_SUCCESS;
}
else if (QR_NumResultCols(res) > 0)
{
*pcrow = QR_get_cursor(res) ? -1 : QR_get_num_total_tuples(res) - res->dl_count;
mylog("RowCount=%d\n", *pcrow);
return SQL_SUCCESS;
}
}
return SQL_SUCCESS;
}
static BOOL SC_pre_execute_ok(StatementClass *stmt, BOOL build_fi, int col_idx, const char *func)
{
Int2 num_fields = SC_pre_execute(stmt);
QResultClass *result = SC_get_Curres(stmt);
BOOL exec_ok = TRUE;
mylog("%s: result = %p, status = %d, numcols = %d\n", func, result, stmt->status, result != NULL ? QR_NumResultCols(result) : -1);
/****if ((!result) || ((stmt->status != STMT_FINISHED) && (stmt->status != STMT_PREMATURE))) ****/
if (!QR_command_maybe_successful(result) || num_fields < 0)
{
/* no query has been executed on this statement */
SC_set_error(stmt, STMT_EXEC_ERROR, "No query has been executed with that handle", func);
exec_ok = FALSE;
}
else if (col_idx >= 0 && col_idx < num_fields)
{
OID reloid = QR_get_relid(result, col_idx);
IRDFields *irdflds = SC_get_IRDF(stmt);
FIELD_INFO *fi;
TABLE_INFO *ti = NULL;
inolog("build_fi=%d reloid=%u\n", build_fi, reloid);
if (build_fi && 0 != QR_get_attid(result, col_idx))
getCOLIfromTI(func, NULL, stmt, reloid, &ti);
inolog("nfields=%d\n", irdflds->nfields);
if (irdflds->fi && col_idx < (int) irdflds->nfields)
{
fi = irdflds->fi[col_idx];
if (fi)
{
if (ti)
{
if (NULL == fi->ti)
fi->ti = ti;
if (!FI_is_applicable(fi)
&& 0 != (ti->flags & TI_COLATTRIBUTE))
fi->flag |= FIELD_COL_ATTRIBUTE;
}
fi->basetype = QR_get_field_type(result, col_idx);
if (0 == fi->columntype)
fi->columntype = fi->basetype;
}
}
}
return exec_ok;
}
/*
* This returns the number of columns associated with the database
* attached to "hstmt".
*/
RETCODE SQL_API
PGAPI_NumResultCols(HSTMT hstmt,
SQLSMALLINT FAR * pccol)
{
CSTR func = "PGAPI_NumResultCols";
StatementClass *stmt = (StatementClass *) hstmt;
QResultClass *result;
char parse_ok;
RETCODE ret = SQL_SUCCESS;
mylog("%s: entering...\n", func);
if (!stmt)
{
SC_log_error(func, NULL_STRING, NULL);
return SQL_INVALID_HANDLE;
}
SC_clear_error(stmt);
#define return DONT_CALL_RETURN_FROM_HERE???
/* StartRollbackState(stmt); */
if (stmt->proc_return > 0)
{
*pccol = 0;
goto cleanup;
}
parse_ok = FALSE;
if (!stmt->catalog_result && SC_is_parse_forced(stmt) && SC_can_parse_statement(stmt))
{
if (SC_parsed_status(stmt) == STMT_PARSE_NONE)
{
mylog("%s: calling parse_statement on stmt=%p\n", func, stmt);
parse_statement(stmt, FALSE);
}
if (SC_parsed_status(stmt) != STMT_PARSE_FATAL)
{
parse_ok = TRUE;
*pccol = SC_get_IRDF(stmt)->nfields;
mylog("PARSE: %s: *pccol = %d\n", func, *pccol);
}
}
if (!parse_ok)
{
if (!SC_pre_execute_ok(stmt, FALSE, -1, func))
{
ret = SQL_ERROR;
goto cleanup;
}
result = SC_get_Curres(stmt);
*pccol = QR_NumPublicResultCols(result);
}
cleanup:
#undef return
if (stmt->internal)
ret = DiscardStatementSvp(stmt, ret, FALSE);
return ret;
}
/*
* Return information about the database column the user wants
* information about.
*/
RETCODE SQL_API
PGAPI_DescribeCol(HSTMT hstmt,
SQLUSMALLINT icol,
SQLCHAR FAR * szColName,
SQLSMALLINT cbColNameMax,
SQLSMALLINT FAR * pcbColName,
SQLSMALLINT FAR * pfSqlType,
SQLULEN FAR * pcbColDef,
SQLSMALLINT FAR * pibScale,
SQLSMALLINT FAR * pfNullable)
{
CSTR func = "PGAPI_DescribeCol";
/* gets all the information about a specific column */
StatementClass *stmt = (StatementClass *) hstmt;
ConnectionClass *conn;
IRDFields *irdflds;
QResultClass *res = NULL;
char *col_name = NULL;
OID fieldtype = 0;
SQLLEN column_size = 0;
SQLINTEGER decimal_digits = 0;
ConnInfo *ci;
FIELD_INFO *fi;
char buf[255];
int len = 0;
RETCODE result = SQL_SUCCESS;
mylog("%s: entering.%d..\n", func, icol);
if (!stmt)
{
SC_log_error(func, NULL_STRING, NULL);
return SQL_INVALID_HANDLE;
}
conn = SC_get_conn(stmt);
ci = &(conn->connInfo);
SC_clear_error(stmt);
#define return DONT_CALL_RETURN_FROM_HERE???
irdflds = SC_get_IRDF(stmt);
if (0 == icol) /* bookmark column */
{
SQLSMALLINT fType = stmt->options.use_bookmarks == SQL_UB_VARIABLE ? SQL_BINARY : SQL_INTEGER;
inolog("answering bookmark info\n");
if (szColName && cbColNameMax > 0)
*szColName = '\0';
if (pcbColName)
*pcbColName = 0;
if (pfSqlType)
*pfSqlType = fType;
if (pcbColDef)
*pcbColDef = 10;
if (pibScale)
*pibScale = 0;
if (pfNullable)
*pfNullable = SQL_NO_NULLS;
result = SQL_SUCCESS;
goto cleanup;
}
/*
* Dont check for bookmark column. This is the responsibility of the
* driver manager.
*/
icol--; /* use zero based column numbers */
fi = NULL;
if (icol < irdflds->nfields && irdflds->fi)
fi = irdflds->fi[icol];
if (!FI_is_applicable(fi) && !stmt->catalog_result && SC_is_parse_forced(stmt) && SC_can_parse_statement(stmt))
{
if (SC_parsed_status(stmt) == STMT_PARSE_NONE)
{
mylog("%s: calling parse_statement on stmt=%p\n", func, stmt);
parse_statement(stmt, FALSE);
}
mylog("PARSE: DescribeCol: icol=%d, stmt=%p, stmt->nfld=%d, stmt->fi=%p\n", icol, stmt, irdflds->nfields, irdflds->fi);
if (SC_parsed_status(stmt) != STMT_PARSE_FATAL && irdflds->fi)
{
if (icol < irdflds->nfields)
fi = irdflds->fi[icol];
else
{
SC_set_error(stmt, STMT_INVALID_COLUMN_NUMBER_ERROR, "Invalid column number in DescribeCol.", func);
result = SQL_ERROR;
goto cleanup;
}
mylog("DescribeCol: getting info for icol=%d\n", icol);
}
}
if (!FI_is_applicable(fi))
{
/*
* If couldn't parse it OR the field being described was not parsed
* (i.e., because it was a function or expression, etc, then do it the
* old fashioned way.
*/
BOOL build_fi = (NULL != pfNullable || NULL != pfSqlType);
fi = NULL;
if (!SC_pre_execute_ok(stmt, build_fi, icol, func))
{
result = SQL_ERROR;
goto cleanup;
}
res = SC_get_Curres(stmt);
if (icol >= QR_NumPublicResultCols(res))
{
SC_set_error(stmt, STMT_INVALID_COLUMN_NUMBER_ERROR, "Invalid column number in DescribeCol.", func);
snprintf(buf, sizeof(buf), "Col#=%d, #Cols=%d,%d keys=%d", icol, QR_NumResultCols(res), QR_NumPublicResultCols(res), res->num_key_fields);
SC_log_error(func, buf, stmt);
result = SQL_ERROR;
goto cleanup;
}
if (icol < irdflds->nfields && irdflds->fi)
fi = irdflds->fi[icol];
}
if (FI_is_applicable(fi))
{
fieldtype = getEffectiveOid(conn, fi);
if (NAME_IS_VALID(fi->column_alias))
col_name = GET_NAME(fi->column_alias);
else
col_name = GET_NAME(fi->column_name);
column_size = fi->column_size;
decimal_digits = fi->decimal_digits;
mylog("PARSE: fieldtype=%d, col_name='%s', column_size=%d\n", fieldtype, NULL_IF_NULL(col_name), column_size);
}
else
{
col_name = QR_get_fieldname(res, icol);
fieldtype = QR_get_field_type(res, icol);
/* atoi(ci->unknown_sizes) */
column_size = pgtype_column_size(stmt, fieldtype, icol, ci->drivers.unknown_sizes);
decimal_digits = pgtype_decimal_digits(stmt, fieldtype, icol);
}
mylog("describeCol: col %d fieldname = '%s'\n", icol, NULL_IF_NULL(col_name));
mylog("describeCol: col %d fieldtype = %d\n", icol, fieldtype);
mylog("describeCol: col %d column_size = %d\n", icol, column_size);
result = SQL_SUCCESS;
/*
* COLUMN NAME
*/
len = col_name ? (int) strlen(col_name) : 0;
if (pcbColName)
*pcbColName = len;
if (szColName && cbColNameMax > 0)
{
if (NULL != col_name)
strncpy_null((char *) szColName, col_name, cbColNameMax);
else
szColName[0] = '\0';
if (len >= cbColNameMax)
{
result = SQL_SUCCESS_WITH_INFO;
SC_set_error(stmt, STMT_TRUNCATED, "The buffer was too small for the colName.", func);
}
}
/*
* CONCISE(SQL) TYPE
*/
if (pfSqlType)
{
*pfSqlType = pgtype_to_concise_type(stmt, fieldtype, icol);
mylog("describeCol: col %d *pfSqlType = %d\n", icol, *pfSqlType);
}
/*
* COLUMN SIZE(PRECISION in 2.x)
*/
if (pcbColDef)
{
if (column_size < 0)
column_size = 0; /* "I dont know" */
*pcbColDef = column_size;
mylog("describeCol: col %d *pcbColDef = %d\n", icol, *pcbColDef);
}
/*
* DECIMAL DIGITS(SCALE in 2.x)
*/
if (pibScale)
{
if (decimal_digits < 0)
decimal_digits = 0;
*pibScale = (SQLSMALLINT) decimal_digits;
mylog("describeCol: col %d *pibScale = %d\n", icol, *pibScale);
}
/*
* NULLABILITY
*/
if (pfNullable)
{
if (SC_has_outer_join(stmt))
*pfNullable = TRUE;
else
*pfNullable = fi ? fi->nullable : pgtype_nullable(conn, fieldtype);
mylog("describeCol: col %d *pfNullable = %d\n", icol, *pfNullable);
}
cleanup:
#undef return
if (stmt->internal)
result = DiscardStatementSvp(stmt, result, FALSE);
return result;
}
/* Returns result column descriptor information for a result set. */
RETCODE SQL_API
PGAPI_ColAttributes(HSTMT hstmt,
SQLUSMALLINT icol,
SQLUSMALLINT fDescType,
PTR rgbDesc,
SQLSMALLINT cbDescMax,
SQLSMALLINT FAR * pcbDesc,
SQLLEN FAR * pfDesc)
{
CSTR func = "PGAPI_ColAttributes";
StatementClass *stmt = (StatementClass *) hstmt;
IRDFields *irdflds;
OID field_type = 0;
Int2 col_idx;
ConnectionClass *conn;
ConnInfo *ci;
int column_size, unknown_sizes;
int cols = 0;
RETCODE result;
const char *p = NULL;
SQLLEN value = 0;
const FIELD_INFO *fi = NULL;
const TABLE_INFO *ti = NULL;
QResultClass *res;
BOOL stmt_updatable;
mylog("%s: entering..col=%d %d len=%d.\n", func, icol, fDescType,
cbDescMax);
if (!stmt)
{
SC_log_error(func, NULL_STRING, NULL);
return SQL_INVALID_HANDLE;
}
stmt_updatable = SC_is_updatable(stmt)
/* The following doesn't seem appropriate for client side cursors
&& stmt->options.scroll_concurrency != SQL_CONCUR_READ_ONLY
*/
;
if (pcbDesc)
*pcbDesc = 0;
irdflds = SC_get_IRDF(stmt);
conn = SC_get_conn(stmt);
ci = &(conn->connInfo);
/*
* Dont check for bookmark column. This is the responsibility of the
* driver manager. For certain types of arguments, the column number
* is ignored anyway, so it may be 0.
*/
res = SC_get_Curres(stmt);
if (0 == icol && SQL_DESC_COUNT != fDescType) /* bookmark column */
{
inolog("answering bookmark info\n");
switch (fDescType)
{
case SQL_DESC_OCTET_LENGTH:
if (pfDesc)
*pfDesc = 4;
break;
case SQL_DESC_TYPE:
if (pfDesc)
*pfDesc = stmt->options.use_bookmarks == SQL_UB_VARIABLE ? SQL_BINARY : SQL_INTEGER;
break;
}
return SQL_SUCCESS;
}
col_idx = icol - 1;
/* atoi(ci->unknown_sizes); */
unknown_sizes = ci->drivers.unknown_sizes;
/* not appropriate for SQLColAttributes() */
if (stmt->catalog_result)
unknown_sizes = UNKNOWNS_AS_CATALOG;
else if (unknown_sizes == UNKNOWNS_AS_DONTKNOW)
unknown_sizes = UNKNOWNS_AS_MAX;
if (!stmt->catalog_result && SC_is_parse_forced(stmt) && SC_can_parse_statement(stmt))
{
if (SC_parsed_status(stmt) == STMT_PARSE_NONE)
{
mylog("%s: calling parse_statement\n", func);
parse_statement(stmt, FALSE);
}
cols = irdflds->nfields;
/*
* Column Count is a special case. The Column number is ignored
* in this case.
*/
if (fDescType == SQL_DESC_COUNT)
{
if (pfDesc)
*pfDesc = cols;
return SQL_SUCCESS;
}
if (SC_parsed_status(stmt) != STMT_PARSE_FATAL && irdflds->fi)
{
if (col_idx >= cols)
{
SC_set_error(stmt, STMT_INVALID_COLUMN_NUMBER_ERROR, "Invalid column number in ColAttributes.", func);
return SQL_ERROR;
}
}
}
if (col_idx < irdflds->nfields && irdflds->fi)
fi = irdflds->fi[col_idx];
if (FI_is_applicable(fi))
field_type = getEffectiveOid(conn, fi);
else
{
BOOL build_fi = FALSE;
fi = NULL;
switch (fDescType)
{
case SQL_COLUMN_OWNER_NAME:
case SQL_COLUMN_TABLE_NAME:
case SQL_COLUMN_TYPE:
case SQL_COLUMN_TYPE_NAME:
case SQL_COLUMN_AUTO_INCREMENT:
case SQL_DESC_NULLABLE:
case SQL_DESC_BASE_TABLE_NAME:
case SQL_DESC_BASE_COLUMN_NAME:
case SQL_COLUMN_UPDATABLE:
case 1212: /* SQL_CA_SS_COLUMN_KEY ? */
build_fi = TRUE;
break;
}
if (!SC_pre_execute_ok(stmt, build_fi, col_idx, func))
return SQL_ERROR;
res = SC_get_Curres(stmt);
cols = QR_NumPublicResultCols(res);
/*
* Column Count is a special case. The Column number is ignored
* in this case.
*/
if (fDescType == SQL_DESC_COUNT)
{
if (pfDesc)
*pfDesc = cols;
return SQL_SUCCESS;
}
if (col_idx >= cols)
{
SC_set_error(stmt, STMT_INVALID_COLUMN_NUMBER_ERROR, "Invalid column number in ColAttributes.", func);
return SQL_ERROR;
}
field_type = QR_get_field_type(res, col_idx);
if (col_idx < irdflds->nfields && irdflds->fi)
fi = irdflds->fi[col_idx];
}
if (FI_is_applicable(fi))
{
ti = fi->ti;
field_type = getEffectiveOid(conn, fi);
}
mylog("colAttr: col %d field_type=%d fi,ti=%p,%p\n", col_idx, field_type, fi, ti);
column_size = (fi != NULL && fi->column_size > 0) ? fi->column_size : pgtype_column_size(stmt, field_type, col_idx, unknown_sizes);
switch (fDescType)
{
case SQL_COLUMN_AUTO_INCREMENT: /* == SQL_DESC_AUTO_UNIQUE_VALUE */
if (fi && fi->auto_increment)
value = TRUE;
else
value = pgtype_auto_increment(conn, field_type);
if (value == -1) /* non-numeric becomes FALSE (ODBC Doc) */
value = FALSE;
mylog("AUTO_INCREMENT=%d\n", value);
break;
case SQL_COLUMN_CASE_SENSITIVE: /* == SQL_DESC_CASE_SENSITIVE */
value = pgtype_case_sensitive(conn, field_type);
break;
/*
* This special case is handled above.
*
* case SQL_COLUMN_COUNT:
*/
case SQL_COLUMN_DISPLAY_SIZE: /* == SQL_DESC_DISPLAY_SIZE */
value = (fi && 0 != fi->display_size) ? fi->display_size : pgtype_display_size(stmt, field_type, col_idx, unknown_sizes);
mylog("%s: col %d, display_size= %d\n", func, col_idx, value);
break;
case SQL_COLUMN_LABEL: /* == SQL_DESC_LABEL */
if (fi && (NAME_IS_VALID(fi->column_alias)))
{
p = GET_NAME(fi->column_alias);
mylog("%s: COLUMN_LABEL = '%s'\n", func, p);
break;
}
/* otherwise same as column name -- FALL THROUGH!!! */
case SQL_DESC_NAME:
inolog("fi=%p", fi);
if (fi)
inolog(" (%s,%s)", PRINT_NAME(fi->column_alias), PRINT_NAME(fi->column_name));
p = fi ? (NAME_IS_NULL(fi->column_alias) ? SAFE_NAME(fi->column_name) : GET_NAME(fi->column_alias)) : QR_get_fieldname(res, col_idx);
mylog("%s: COLUMN_NAME = '%s'\n", func, p);
break;
case SQL_COLUMN_LENGTH:
value = (fi && fi->length > 0) ? fi->length : pgtype_buffer_length(stmt, field_type, col_idx, unknown_sizes);
if (0 > value)
/* if (-1 == value) I'm not sure which is right */
value = 0;
mylog("%s: col %d, column_length = %d\n", func, col_idx, value);
break;
case SQL_COLUMN_MONEY: /* == SQL_DESC_FIXED_PREC_SCALE */
value = pgtype_money(conn, field_type);
inolog("COLUMN_MONEY=%d\n", value);
break;
case SQL_DESC_NULLABLE:
if (SC_has_outer_join(stmt))
value = TRUE;
else
value = fi ? fi->nullable : pgtype_nullable(conn, field_type);
inolog("COLUMN_NULLABLE=%d\n", value);
break;
case SQL_COLUMN_OWNER_NAME: /* == SQL_DESC_SCHEMA_NAME */
p = ti ? SAFE_NAME(ti->schema_name) : NULL_STRING;
mylog("%s: SCHEMA_NAME = '%s'\n", func, p);
break;
case SQL_COLUMN_PRECISION: /* in 2.x */
value = column_size;
if (value < 0)
value = 0;
mylog("%s: col %d, column_size = %d\n", func, col_idx, value);
break;
case SQL_COLUMN_QUALIFIER_NAME: /* == SQL_DESC_CATALOG_NAME */
p = ti ? CurrCatString(conn) : NULL_STRING; /* empty string means *not supported* */
break;
case SQL_COLUMN_SCALE: /* in 2.x */
value = pgtype_decimal_digits(stmt, field_type, col_idx);
inolog("COLUMN_SCALE=%d\n", value);
if (value < 0)
value = 0;
break;
case SQL_COLUMN_SEARCHABLE: /* == SQL_DESC_SEARCHABLE */
value = pgtype_searchable(conn, field_type);
break;
case SQL_COLUMN_TABLE_NAME: /* == SQL_DESC_TABLE_NAME */
p = ti ? SAFE_NAME(ti->table_name) : NULL_STRING;
mylog("%s: TABLE_NAME = '%s'\n", func, p);
break;
case SQL_COLUMN_TYPE: /* == SQL_DESC_CONCISE_TYPE */
value = pgtype_to_concise_type(stmt, field_type, col_idx);
mylog("COLUMN_TYPE=%d\n", value);
break;
case SQL_COLUMN_TYPE_NAME: /* == SQL_DESC_TYPE_NAME */
p = pgtype_to_name(stmt, field_type, col_idx, fi && fi->auto_increment);
break;
case SQL_COLUMN_UNSIGNED: /* == SQL_DESC_UNSINGED */
value = pgtype_unsigned(conn, field_type);
if (value == -1) /* non-numeric becomes TRUE (ODBC Doc) */
value = SQL_TRUE;
break;
case SQL_COLUMN_UPDATABLE: /* == SQL_DESC_UPDATABLE */
/*
* Neither Access or Borland care about this.
*
* if (field_type == PG_TYPE_OID) pfDesc = SQL_ATTR_READONLY;
* else
*/
if (!stmt_updatable)
value = SQL_ATTR_READONLY;
else
value = fi ? (fi->updatable ? SQL_ATTR_WRITE : SQL_ATTR_READONLY) : (QR_get_attid(res, col_idx) > 0 ? SQL_ATTR_WRITE : SQL_ATTR_READONLY);
if (SQL_ATTR_READONLY != value)
{
const char *name = fi ? SAFE_NAME(fi->column_name) : QR_get_fieldname(res, col_idx);
if (stricmp(name, OID_NAME) == 0 ||
stricmp(name, "ctid") == 0 ||
stricmp(name, "xmin") == 0)
value = SQL_ATTR_READONLY;
else if (conn->ms_jet && fi && fi->auto_increment)
value = SQL_ATTR_READONLY;
}
mylog("%s: UPDATEABLE = %d\n", func, value);
break;
case SQL_DESC_BASE_COLUMN_NAME:
p = fi ? SAFE_NAME(fi->column_name) : QR_get_fieldname(res, col_idx);
mylog("%s: BASE_COLUMN_NAME = '%s'\n", func, p);
break;
case SQL_DESC_BASE_TABLE_NAME: /* the same as TABLE_NAME ok ? */
p = ti ? SAFE_NAME(ti->table_name) : NULL_STRING;
mylog("%s: BASE_TABLE_NAME = '%s'\n", func, p);
break;
case SQL_DESC_LENGTH: /* different from SQL_COLUMN_LENGTH */
value = (fi && column_size > 0) ? column_size : pgtype_desclength(stmt, field_type, col_idx, unknown_sizes);
if (-1 == value)
value = 0;
mylog("%s: col %d, desc_length = %d\n", func, col_idx, value);
break;
case SQL_DESC_OCTET_LENGTH:
value = (fi && fi->length > 0) ? fi->length : pgtype_attr_transfer_octet_length(conn, field_type, column_size, unknown_sizes);
if (-1 == value)
value = 0;
mylog("%s: col %d, octet_length = %d\n", func, col_idx, value);
break;
case SQL_DESC_PRECISION: /* different from SQL_COLUMN_PRECISION */
if (value = FI_precision(fi), value <= 0)
value = pgtype_precision(stmt, field_type, col_idx, unknown_sizes);
if (value < 0)
value = 0;
mylog("%s: col %d, desc_precision = %d\n", func, col_idx, value);
break;
case SQL_DESC_SCALE: /* different from SQL_COLUMN_SCALE */
value = pgtype_scale(stmt, field_type, col_idx);
if (value < 0)
value = 0;
break;
case SQL_DESC_LOCAL_TYPE_NAME:
p = pgtype_to_name(stmt, field_type, col_idx, fi && fi->auto_increment);
break;
case SQL_DESC_TYPE:
value = pgtype_to_sqldesctype(stmt, field_type, col_idx);
break;
case SQL_DESC_NUM_PREC_RADIX:
value = pgtype_radix(conn, field_type);
break;
case SQL_DESC_LITERAL_PREFIX:
p = pgtype_literal_prefix(conn, field_type);
break;
case SQL_DESC_LITERAL_SUFFIX:
p = pgtype_literal_suffix(conn, field_type);
break;
case SQL_DESC_UNNAMED:
value = (fi && NAME_IS_NULL(fi->column_name) && NAME_IS_NULL(fi->column_alias)) ? SQL_UNNAMED : SQL_NAMED;
break;
case 1211: /* SQL_CA_SS_COLUMN_HIDDEN ? */
value = 0;
break;
case 1212: /* SQL_CA_SS_COLUMN_KEY ? */
if (fi)
{
if (fi->columnkey < 0)
{
SC_set_SS_columnkey(stmt);
}
value = fi->columnkey;
mylog("%s:SS_COLUMN_KEY=%d\n", func, value);
break;
}
SC_set_error(stmt, STMT_OPTION_NOT_FOR_THE_DRIVER, "this request may be for MS SQL Server", func);
return SQL_ERROR;
default:
SC_set_error(stmt, STMT_INVALID_OPTION_IDENTIFIER, "ColAttribute for this type not implemented yet", func);
return SQL_ERROR;
}
result = SQL_SUCCESS;
if (p)
{ /* char/binary data */
size_t len = strlen(p);
if (rgbDesc)
{
strncpy_null((char *) rgbDesc, p, (size_t) cbDescMax);
if (len >= cbDescMax)
{
result = SQL_SUCCESS_WITH_INFO;
SC_set_error(stmt, STMT_TRUNCATED, "The buffer was too small for the rgbDesc.", func);
}
}
if (pcbDesc)
*pcbDesc = (SQLSMALLINT) len;
}
else
{
/* numeric data */
if (pfDesc)
*pfDesc = value;
}
return result;
}
/* Returns result data for a single column in the current row. */
RETCODE SQL_API
PGAPI_GetData(HSTMT hstmt,
SQLUSMALLINT icol,
SQLSMALLINT fCType,
PTR rgbValue,
SQLLEN cbValueMax,
SQLLEN FAR * pcbValue)
{
CSTR func = "PGAPI_GetData";
QResultClass *res;
StatementClass *stmt = (StatementClass *) hstmt;
UInt2 num_cols;
SQLLEN num_rows;
OID field_type;
int atttypmod;
void *value = NULL;
RETCODE result = SQL_SUCCESS;
char get_bookmark = FALSE;
SQLSMALLINT target_type;
int precision = -1;
mylog("%s: enter, stmt=%p icol=%d\n", func, stmt, icol);
if (!stmt)
{
SC_log_error(func, NULL_STRING, NULL);
return SQL_INVALID_HANDLE;
}
res = SC_get_Curres(stmt);
if (STMT_EXECUTING == stmt->status)
{
SC_set_error(stmt, STMT_SEQUENCE_ERROR, "Can't get data while statement is still executing.", func);
return SQL_ERROR;
}
if (stmt->status != STMT_FINISHED)
{
SC_set_error(stmt, STMT_STATUS_ERROR, "GetData can only be called after the successful execution on a SQL statement", func);
return SQL_ERROR;
}
if (SQL_ARD_TYPE == fCType)
{
ARDFields *opts;
BindInfoClass *binfo = NULL;
opts = SC_get_ARDF(stmt);
if (0 == icol)
binfo = opts->bookmark;
else if (icol <= opts->allocated && opts->bindings)
binfo = &opts->bindings[icol - 1];
if (binfo)
{
target_type = binfo->returntype;
mylog("SQL_ARD_TYPE=%d\n", target_type);
precision = binfo->precision;
}
else
{
SC_set_error(stmt, STMT_STATUS_ERROR, "GetData can't determine the type via ARD", func);
return SQL_ERROR;
}
}
else
target_type = fCType;
if (icol == 0)
{
if (stmt->options.use_bookmarks == SQL_UB_OFF)
{
SC_set_error(stmt, STMT_COLNUM_ERROR, "Attempt to retrieve bookmark with bookmark usage disabled", func);
return SQL_ERROR;
}
/* Make sure it is the bookmark data type */
switch (target_type)
{
case SQL_C_BOOKMARK:
case SQL_C_VARBOOKMARK:
break;
default:
inolog("GetData Column 0 is type %d not of type SQL_C_BOOKMARK", target_type);
SC_set_error(stmt, STMT_PROGRAM_TYPE_OUT_OF_RANGE, "Column 0 is not of type SQL_C_BOOKMARK", func);
return SQL_ERROR;
}
get_bookmark = TRUE;
}
else
{
/* use zero-based column numbers */
icol--;
/* make sure the column number is valid */
num_cols = QR_NumPublicResultCols(res);
if (icol >= num_cols)
{
SC_set_error(stmt, STMT_INVALID_COLUMN_NUMBER_ERROR, "Invalid column number.", func);
return SQL_ERROR;
}
}
#define return DONT_CALL_RETURN_FROM_HERE???
/* StartRollbackState(stmt); */
if (!SC_is_fetchcursor(stmt))
{
/* make sure we're positioned on a valid row */
num_rows = QR_get_num_total_tuples(res);
if ((stmt->currTuple < 0) ||
(stmt->currTuple >= num_rows))
{
SC_set_error(stmt, STMT_INVALID_CURSOR_STATE_ERROR, "Not positioned on a valid row for GetData.", func);
result = SQL_ERROR;
goto cleanup;
}
mylog(" num_rows = %d\n", num_rows);
if (!get_bookmark)
{
SQLLEN curt = GIdx2CacheIdx(stmt->currTuple, stmt, res);
value = QR_get_value_backend_row(res, curt, icol);
inolog("currT=%d base=%d rowset=%d\n", stmt->currTuple, QR_get_rowstart_in_cache(res), SC_get_rowset_start(stmt));
mylog(" value = '%s'\n", NULL_IF_NULL(value));
}
}
else
{
/* it's a SOCKET result (backend data) */
if (stmt->currTuple == -1 || !res || !res->tupleField)
{
SC_set_error(stmt, STMT_INVALID_CURSOR_STATE_ERROR, "Not positioned on a valid row for GetData.", func);
result = SQL_ERROR;
goto cleanup;
}
if (!get_bookmark)