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php-src/ext/pdo_odbc/odbc_stmt.c

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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2012 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.0 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_0.txt. |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Wez Furlong <wez@php.net> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "php.h"
#include "php_ini.h"
#include "ext/standard/info.h"
#include "pdo/php_pdo.h"
#include "pdo/php_pdo_driver.h"
#include "php_pdo_odbc.h"
#include "php_pdo_odbc_int.h"
enum pdo_odbc_conv_result {
PDO_ODBC_CONV_NOT_REQUIRED,
PDO_ODBC_CONV_OK,
PDO_ODBC_CONV_FAIL
};
static int pdo_odbc_sqltype_is_unicode(pdo_odbc_stmt *S, SWORD sqltype)
{
if (!S->assume_utf8) return 0;
switch (sqltype) {
#ifdef SQL_WCHAR
case SQL_WCHAR:
return 1;
#endif
#ifdef SQL_WLONGVARCHAR
case SQL_WLONGVARCHAR:
return 1;
#endif
#ifdef SQL_WVARCHAR
case SQL_WVARCHAR:
return 1;
#endif
default:
return 0;
}
}
static int pdo_odbc_utf82ucs2(pdo_stmt_t *stmt, int is_unicode, const char *buf,
unsigned long buflen, unsigned long *outlen)
{
#ifdef PHP_WIN32
if (is_unicode && buflen) {
pdo_odbc_stmt *S = (pdo_odbc_stmt*)stmt->driver_data;
DWORD ret;
ret = MultiByteToWideChar(CP_UTF8, 0, buf, buflen, NULL, 0);
if (ret == 0) {
/*printf("%s:%d %d [%d] %.*s\n", __FILE__, __LINE__, GetLastError(), buflen, buflen, buf);*/
return PDO_ODBC_CONV_FAIL;
}
ret *= sizeof(WCHAR);
if (S->convbufsize <= ret) {
S->convbufsize = ret + sizeof(WCHAR);
S->convbuf = erealloc(S->convbuf, S->convbufsize);
}
ret = MultiByteToWideChar(CP_UTF8, 0, buf, buflen, (LPWSTR)S->convbuf, S->convbufsize / sizeof(WCHAR));
if (ret == 0) {
/*printf("%s:%d %d [%d] %.*s\n", __FILE__, __LINE__, GetLastError(), buflen, buflen, buf);*/
return PDO_ODBC_CONV_FAIL;
}
ret *= sizeof(WCHAR);
*outlen = ret;
return PDO_ODBC_CONV_OK;
}
#endif
return PDO_ODBC_CONV_NOT_REQUIRED;
}
static int pdo_odbc_ucs22utf8(pdo_stmt_t *stmt, int is_unicode, const char *buf,
unsigned long buflen, unsigned long *outlen)
{
#ifdef PHP_WIN32
if (is_unicode && buflen) {
pdo_odbc_stmt *S = (pdo_odbc_stmt*)stmt->driver_data;
DWORD ret;
ret = WideCharToMultiByte(CP_UTF8, 0, (LPCWSTR)buf, buflen/sizeof(WCHAR), NULL, 0, NULL, NULL);
if (ret == 0) {
return PDO_ODBC_CONV_FAIL;
}
if (S->convbufsize <= ret) {
S->convbufsize = ret + 1;
S->convbuf = erealloc(S->convbuf, S->convbufsize);
}
ret = WideCharToMultiByte(CP_UTF8, 0, (LPCWSTR)buf, buflen/sizeof(WCHAR), S->convbuf, S->convbufsize, NULL, NULL);
if (ret == 0) {
return PDO_ODBC_CONV_FAIL;
}
*outlen = ret;
S->convbuf[*outlen] = '\0';
return PDO_ODBC_CONV_OK;
}
#endif
return PDO_ODBC_CONV_NOT_REQUIRED;
}
static void free_cols(pdo_stmt_t *stmt, pdo_odbc_stmt *S TSRMLS_DC)
{
if (S->cols) {
int i;
for (i = 0; i < stmt->column_count; i++) {
if (S->cols[i].data) {
efree(S->cols[i].data);
}
}
efree(S->cols);
S->cols = NULL;
}
}
static int odbc_stmt_dtor(pdo_stmt_t *stmt TSRMLS_DC)
{
pdo_odbc_stmt *S = (pdo_odbc_stmt*)stmt->driver_data;
if (S->stmt != SQL_NULL_HANDLE) {
if (stmt->executed) {
SQLCloseCursor(S->stmt);
}
SQLFreeHandle(SQL_HANDLE_STMT, S->stmt);
S->stmt = SQL_NULL_HANDLE;
}
free_cols(stmt, S TSRMLS_CC);
if (S->convbuf) {
efree(S->convbuf);
}
efree(S);
return 1;
}
static int odbc_stmt_execute(pdo_stmt_t *stmt TSRMLS_DC)
{
RETCODE rc;
pdo_odbc_stmt *S = (pdo_odbc_stmt*)stmt->driver_data;
char *buf = NULL;
SQLLEN row_count = -1;
if (stmt->executed) {
SQLCloseCursor(S->stmt);
}
rc = SQLExecute(S->stmt);
while (rc == SQL_NEED_DATA) {
struct pdo_bound_param_data *param;
rc = SQLParamData(S->stmt, (SQLPOINTER*)&param);
if (rc == SQL_NEED_DATA) {
php_stream *stm;
int len;
pdo_odbc_param *P;
P = (pdo_odbc_param*)param->driver_data;
if (Z_TYPE_P(param->parameter) != IS_RESOURCE) {
/* they passed in a string */
unsigned long ulen;
convert_to_string(param->parameter);
switch (pdo_odbc_utf82ucs2(stmt, P->is_unicode,
Z_STRVAL_P(param->parameter),
Z_STRLEN_P(param->parameter),
&ulen)) {
case PDO_ODBC_CONV_NOT_REQUIRED:
SQLPutData(S->stmt, Z_STRVAL_P(param->parameter),
Z_STRLEN_P(param->parameter));
break;
case PDO_ODBC_CONV_OK:
SQLPutData(S->stmt, S->convbuf, ulen);
break;
case PDO_ODBC_CONV_FAIL:
pdo_odbc_stmt_error("error converting input string");
SQLCloseCursor(S->stmt);
if (buf) {
efree(buf);
}
return 0;
}
continue;
}
/* we assume that LOBs are binary and don't need charset
* conversion */
php_stream_from_zval_no_verify(stm, &param->parameter);
if (!stm) {
/* shouldn't happen either */
pdo_odbc_stmt_error("input LOB is no longer a stream");
SQLCloseCursor(S->stmt);
if (buf) {
efree(buf);
}
return 0;
}
/* now suck data from the stream and stick it into the database */
if (buf == NULL) {
buf = emalloc(8192);
}
do {
len = php_stream_read(stm, buf, 8192);
if (len == 0) {
break;
}
SQLPutData(S->stmt, buf, len);
} while (1);
}
}
if (buf) {
efree(buf);
}
switch (rc) {
case SQL_SUCCESS:
break;
case SQL_NO_DATA_FOUND:
case SQL_SUCCESS_WITH_INFO:
pdo_odbc_stmt_error("SQLExecute");
break;
default:
pdo_odbc_stmt_error("SQLExecute");
return 0;
}
SQLRowCount(S->stmt, &row_count);
stmt->row_count = row_count;
if (!stmt->executed) {
/* do first-time-only definition of bind/mapping stuff */
SQLSMALLINT colcount;
/* how many columns do we have ? */
SQLNumResultCols(S->stmt, &colcount);
stmt->column_count = (int)colcount;
S->cols = ecalloc(colcount, sizeof(pdo_odbc_column));
S->going_long = 0;
}
return 1;
}
static int odbc_stmt_param_hook(pdo_stmt_t *stmt, struct pdo_bound_param_data *param,
enum pdo_param_event event_type TSRMLS_DC)
{
pdo_odbc_stmt *S = (pdo_odbc_stmt*)stmt->driver_data;
RETCODE rc;
SWORD sqltype = 0, ctype = 0, scale = 0, nullable = 0;
UDWORD precision = 0;
pdo_odbc_param *P;
/* we're only interested in parameters for prepared SQL right now */
if (param->is_param) {
switch (event_type) {
case PDO_PARAM_EVT_FREE:
P = param->driver_data;
if (P) {
efree(P);
}
break;
case PDO_PARAM_EVT_ALLOC:
{
/* figure out what we're doing */
switch (PDO_PARAM_TYPE(param->param_type)) {
case PDO_PARAM_LOB:
break;
case PDO_PARAM_STMT:
return 0;
default:
break;
}
rc = SQLDescribeParam(S->stmt, (SQLUSMALLINT) param->paramno+1, &sqltype, &precision, &scale, &nullable);
if (rc != SQL_SUCCESS && rc != SQL_SUCCESS_WITH_INFO) {
/* MS Access, for instance, doesn't support SQLDescribeParam,
* so we need to guess */
sqltype = PDO_PARAM_TYPE(param->param_type) == PDO_PARAM_LOB ?
SQL_LONGVARBINARY :
SQL_LONGVARCHAR;
precision = 4000;
scale = 5;
nullable = 1;
if (param->max_value_len > 0) {
precision = param->max_value_len;
}
}
if (sqltype == SQL_BINARY || sqltype == SQL_VARBINARY || sqltype == SQL_LONGVARBINARY) {
ctype = SQL_C_BINARY;
} else {
ctype = SQL_C_CHAR;
}
P = emalloc(sizeof(*P));
param->driver_data = P;
P->len = 0; /* is re-populated each EXEC_PRE */
P->outbuf = NULL;
P->is_unicode = pdo_odbc_sqltype_is_unicode(S, sqltype);
if (P->is_unicode) {
/* avoid driver auto-translation: we'll do it ourselves */
ctype = SQL_C_BINARY;
}
if ((param->param_type & PDO_PARAM_INPUT_OUTPUT) == PDO_PARAM_INPUT_OUTPUT) {
P->paramtype = SQL_PARAM_INPUT_OUTPUT;
} else if (param->max_value_len <= 0) {
P->paramtype = SQL_PARAM_INPUT;
} else {
P->paramtype = SQL_PARAM_OUTPUT;
}
if (P->paramtype != SQL_PARAM_INPUT) {
if (PDO_PARAM_TYPE(param->param_type) != PDO_PARAM_NULL) {
/* need an explicit buffer to hold result */
P->len = param->max_value_len > 0 ? param->max_value_len : precision;
if (P->is_unicode) {
P->len *= 2;
}
P->outbuf = emalloc(P->len + (P->is_unicode ? 2:1));
}
}
if (PDO_PARAM_TYPE(param->param_type) == PDO_PARAM_LOB && P->paramtype != SQL_PARAM_INPUT) {
pdo_odbc_stmt_error("Can't bind a lob for output");
return 0;
}
rc = SQLBindParameter(S->stmt, (SQLUSMALLINT) param->paramno+1,
P->paramtype, ctype, sqltype, precision, scale,
P->paramtype == SQL_PARAM_INPUT ?
(SQLPOINTER)param :
P->outbuf,
P->len,
&P->len
);
if (rc == SQL_SUCCESS || rc == SQL_SUCCESS_WITH_INFO) {
return 1;
}
pdo_odbc_stmt_error("SQLBindParameter");
return 0;
}
case PDO_PARAM_EVT_EXEC_PRE:
P = param->driver_data;
if (PDO_PARAM_TYPE(param->param_type) == PDO_PARAM_LOB) {
if (Z_TYPE_P(param->parameter) == IS_RESOURCE) {
php_stream *stm;
php_stream_statbuf sb;
php_stream_from_zval_no_verify(stm, &param->parameter);
if (!stm) {
return 0;
}
if (0 == php_stream_stat(stm, &sb)) {
if (P->outbuf) {
int len, amount;
char *ptr = P->outbuf;
char *end = P->outbuf + P->len;
P->len = 0;
do {
amount = end - ptr;
if (amount == 0) {
break;
}
if (amount > 8192)
amount = 8192;
len = php_stream_read(stm, ptr, amount);
if (len == 0) {
break;
}
ptr += len;
P->len += len;
} while (1);
} else {
P->len = SQL_LEN_DATA_AT_EXEC(sb.sb.st_size);
}
} else {
if (P->outbuf) {
P->len = 0;
} else {
P->len = SQL_LEN_DATA_AT_EXEC(0);
}
}
} else {
convert_to_string(param->parameter);
if (P->outbuf) {
P->len = Z_STRLEN_P(param->parameter);
memcpy(P->outbuf, Z_STRVAL_P(param->parameter), P->len);
} else {
P->len = SQL_LEN_DATA_AT_EXEC(Z_STRLEN_P(param->parameter));
}
}
} else if (Z_TYPE_P(param->parameter) == IS_NULL || PDO_PARAM_TYPE(param->param_type) == PDO_PARAM_NULL) {
P->len = SQL_NULL_DATA;
} else {
convert_to_string(param->parameter);
if (P->outbuf) {
unsigned long ulen;
switch (pdo_odbc_utf82ucs2(stmt, P->is_unicode,
Z_STRVAL_P(param->parameter),
Z_STRLEN_P(param->parameter),
&ulen)) {
case PDO_ODBC_CONV_FAIL:
case PDO_ODBC_CONV_NOT_REQUIRED:
P->len = Z_STRLEN_P(param->parameter);
memcpy(P->outbuf, Z_STRVAL_P(param->parameter), P->len);
break;
case PDO_ODBC_CONV_OK:
P->len = ulen;
memcpy(P->outbuf, S->convbuf, P->len);
break;
}
} else {
P->len = SQL_LEN_DATA_AT_EXEC(Z_STRLEN_P(param->parameter));
}
}
return 1;
case PDO_PARAM_EVT_EXEC_POST:
P = param->driver_data;
if (P->outbuf) {
if (P->outbuf) {
unsigned long ulen;
char *srcbuf;
unsigned long srclen;
switch (P->len) {
case SQL_NULL_DATA:
zval_dtor(param->parameter);
ZVAL_NULL(param->parameter);
break;
default:
convert_to_string(param->parameter);
switch (pdo_odbc_ucs22utf8(stmt, P->is_unicode, P->outbuf, P->len, &ulen)) {
case PDO_ODBC_CONV_FAIL:
/* something fishy, but allow it to come back as binary */
case PDO_ODBC_CONV_NOT_REQUIRED:
srcbuf = P->outbuf;
srclen = P->len;
break;
case PDO_ODBC_CONV_OK:
srcbuf = S->convbuf;
srclen = ulen;
break;
}
Z_STRVAL_P(param->parameter) = erealloc(Z_STRVAL_P(param->parameter), srclen+1);
memcpy(Z_STRVAL_P(param->parameter), srcbuf, srclen);
Z_STRLEN_P(param->parameter) = srclen;
Z_STRVAL_P(param->parameter)[srclen] = '\0';
}
}
}
return 1;
}
}
return 1;
}
static int odbc_stmt_fetch(pdo_stmt_t *stmt,
enum pdo_fetch_orientation ori, long offset TSRMLS_DC)
{
RETCODE rc;
SQLSMALLINT odbcori;
pdo_odbc_stmt *S = (pdo_odbc_stmt*)stmt->driver_data;
switch (ori) {
case PDO_FETCH_ORI_NEXT: odbcori = SQL_FETCH_NEXT; break;
case PDO_FETCH_ORI_PRIOR: odbcori = SQL_FETCH_PRIOR; break;
case PDO_FETCH_ORI_FIRST: odbcori = SQL_FETCH_FIRST; break;
case PDO_FETCH_ORI_LAST: odbcori = SQL_FETCH_LAST; break;
case PDO_FETCH_ORI_ABS: odbcori = SQL_FETCH_ABSOLUTE; break;
case PDO_FETCH_ORI_REL: odbcori = SQL_FETCH_RELATIVE; break;
default:
strcpy(stmt->error_code, "HY106");
return 0;
}
rc = SQLFetchScroll(S->stmt, odbcori, offset);
if (rc == SQL_SUCCESS) {
return 1;
}
if (rc == SQL_SUCCESS_WITH_INFO) {
pdo_odbc_stmt_error("SQLFetchScroll");
return 1;
}
if (rc == SQL_NO_DATA) {
/* pdo_odbc_stmt_error("SQLFetchScroll"); */
return 0;
}
pdo_odbc_stmt_error("SQLFetchScroll");
return 0;
}
static int odbc_stmt_describe(pdo_stmt_t *stmt, int colno TSRMLS_DC)
{
pdo_odbc_stmt *S = (pdo_odbc_stmt*)stmt->driver_data;
struct pdo_column_data *col = &stmt->columns[colno];
zend_bool dyn = FALSE;
RETCODE rc;
SWORD colnamelen;
SDWORD colsize, displaysize;
rc = SQLDescribeCol(S->stmt, colno+1, S->cols[colno].colname,
sizeof(S->cols[colno].colname)-1, &colnamelen,
&S->cols[colno].coltype, &colsize, NULL, NULL);
if (rc != SQL_SUCCESS) {
pdo_odbc_stmt_error("SQLDescribeCol");
if (rc != SQL_SUCCESS_WITH_INFO) {
return 0;
}
}
rc = SQLColAttribute(S->stmt, colno+1,
SQL_DESC_DISPLAY_SIZE,
NULL, 0, NULL, &displaysize);
if (rc != SQL_SUCCESS) {
pdo_odbc_stmt_error("SQLColAttribute");
if (rc != SQL_SUCCESS_WITH_INFO) {
return 0;
}
}
colsize = displaysize;
col->maxlen = S->cols[colno].datalen = colsize;
col->namelen = colnamelen;
col->name = estrdup(S->cols[colno].colname);
S->cols[colno].is_unicode = pdo_odbc_sqltype_is_unicode(S, S->cols[colno].coltype);
/* returning data as a string */
col->param_type = PDO_PARAM_STR;
/* tell ODBC to put it straight into our buffer, but only if it
* isn't "long" data, and only if we haven't already bound a long
* column. */
if (colsize < 256 && !S->going_long) {
S->cols[colno].data = emalloc(colsize+1);
S->cols[colno].is_long = 0;
rc = SQLBindCol(S->stmt, colno+1,
S->cols[colno].is_unicode ? SQL_C_BINARY : SQL_C_CHAR,
S->cols[colno].data,
S->cols[colno].datalen+1, &S->cols[colno].fetched_len);
if (rc != SQL_SUCCESS) {
pdo_odbc_stmt_error("SQLBindCol");
return 0;
}
} else {
/* allocate a smaller buffer to keep around for smaller
* "long" columns */
S->cols[colno].data = emalloc(256);
S->going_long = 1;
S->cols[colno].is_long = 1;
}
return 1;
}
static int odbc_stmt_get_col(pdo_stmt_t *stmt, int colno, char **ptr, unsigned long *len, int *caller_frees TSRMLS_DC)
{
pdo_odbc_stmt *S = (pdo_odbc_stmt*)stmt->driver_data;
pdo_odbc_column *C = &S->cols[colno];
unsigned long ulen;
/* if it is a column containing "long" data, perform late binding now */
if (C->is_long) {
unsigned long alloced = 4096;
unsigned long used = 0;
char *buf;
RETCODE rc;
/* fetch it into C->data, which is allocated with a length
* of 256 bytes; if there is more to be had, we then allocate
* bigger buffer for the caller to free */
rc = SQLGetData(S->stmt, colno+1, C->is_unicode ? SQL_C_BINARY : SQL_C_CHAR, C->data,
256, &C->fetched_len);
if (rc == SQL_SUCCESS) {
/* all the data fit into our little buffer;
* jump down to the generic bound data case */
goto in_data;
}
if (rc == SQL_SUCCESS_WITH_INFO) {
/* promote up to a bigger buffer */
if (C->fetched_len != SQL_NO_TOTAL) {
/* use size suggested by the driver, if it knows it */
buf = emalloc(C->fetched_len + 1);
memcpy(buf, C->data, C->fetched_len);
buf[C->fetched_len] = 0;
used = C->fetched_len;
} else {
buf = estrndup(C->data, 256);
used = 255; /* not 256; the driver NUL terminated the buffer */
}
do {
C->fetched_len = 0;
rc = SQLGetData(S->stmt, colno+1, SQL_C_CHAR,
buf + used, alloced - used,
&C->fetched_len);
if (rc == SQL_NO_DATA) {
/* we got the lot */
break;
} else if (rc != SQL_SUCCESS) {
pdo_odbc_stmt_error("SQLGetData");
if (rc != SQL_SUCCESS_WITH_INFO) {
break;
}
}
if (C->fetched_len == SQL_NO_TOTAL) {
used += alloced - used;
} else {
used += C->fetched_len;
}
if (rc == SQL_SUCCESS) {
/* this was the final fetch */
break;
}
/* we need to fetch another chunk; resize the
* buffer */
alloced *= 2;
buf = erealloc(buf, alloced);
} while (1);
/* size down */
if (used < alloced - 1024) {
alloced = used+1;
buf = erealloc(buf, used+1);
}
buf[used] = '\0';
*ptr = buf;
*caller_frees = 1;
*len = used;
if (C->is_unicode) {
goto unicode_conv;
}
return 1;
}
/* something went caca */
*ptr = NULL;
*len = 0;
return 1;
}
in_data:
/* check the indicator to ensure that the data is intact */
if (C->fetched_len == SQL_NULL_DATA) {
/* A NULL value */
*ptr = NULL;
*len = 0;
return 1;
} else if (C->fetched_len >= 0) {
/* it was stored perfectly */
*ptr = C->data;
*len = C->fetched_len;
if (C->is_unicode) {
goto unicode_conv;
}
return 1;
} else {
/* no data? */
*ptr = NULL;
*len = 0;
return 1;
}
unicode_conv:
switch (pdo_odbc_ucs22utf8(stmt, C->is_unicode, *ptr, *len, &ulen)) {
case PDO_ODBC_CONV_FAIL:
/* oh well. They can have the binary version of it */
case PDO_ODBC_CONV_NOT_REQUIRED:
/* shouldn't happen... */
return 1;
case PDO_ODBC_CONV_OK:
if (*caller_frees) {
efree(*ptr);
}
*ptr = emalloc(ulen + 1);
*len = ulen;
memcpy(*ptr, S->convbuf, ulen+1);
*caller_frees = 1;
return 1;
}
return 1;
}
static int odbc_stmt_set_param(pdo_stmt_t *stmt, long attr, zval *val TSRMLS_DC)
{
SQLRETURN rc;
pdo_odbc_stmt *S = (pdo_odbc_stmt*)stmt->driver_data;
switch (attr) {
case PDO_ATTR_CURSOR_NAME:
convert_to_string(val);
rc = SQLSetCursorName(S->stmt, Z_STRVAL_P(val), Z_STRLEN_P(val));
if (rc == SQL_SUCCESS || rc == SQL_SUCCESS_WITH_INFO) {
return 1;
}
pdo_odbc_stmt_error("SQLSetCursorName");
return 0;
case PDO_ODBC_ATTR_ASSUME_UTF8:
S->assume_utf8 = zval_is_true(val);
return 0;
default:
strcpy(S->einfo.last_err_msg, "Unknown Attribute");
S->einfo.what = "setAttribute";
strcpy(S->einfo.last_state, "IM001");
return -1;
}
}
static int odbc_stmt_get_attr(pdo_stmt_t *stmt, long attr, zval *val TSRMLS_DC)
{
SQLRETURN rc;
pdo_odbc_stmt *S = (pdo_odbc_stmt*)stmt->driver_data;
switch (attr) {
case PDO_ATTR_CURSOR_NAME:
{
char buf[256];
SQLSMALLINT len = 0;
rc = SQLGetCursorName(S->stmt, buf, sizeof(buf), &len);
if (rc == SQL_SUCCESS || rc == SQL_SUCCESS_WITH_INFO) {
ZVAL_STRINGL(val, buf, len, 1);
return 1;
}
pdo_odbc_stmt_error("SQLGetCursorName");
return 0;
}
case PDO_ODBC_ATTR_ASSUME_UTF8:
ZVAL_BOOL(val, S->assume_utf8 ? 1 : 0);
return 0;
default:
strcpy(S->einfo.last_err_msg, "Unknown Attribute");
S->einfo.what = "getAttribute";
strcpy(S->einfo.last_state, "IM001");
return -1;
}
}
static int odbc_stmt_next_rowset(pdo_stmt_t *stmt TSRMLS_DC)
{
SQLRETURN rc;
SQLSMALLINT colcount;
pdo_odbc_stmt *S = (pdo_odbc_stmt*)stmt->driver_data;
/* NOTE: can't guarantee that output or input/output parameters
* are set until this fella returns SQL_NO_DATA, according to
* MSDN ODBC docs */
rc = SQLMoreResults(S->stmt);
if (rc != SQL_SUCCESS && rc != SQL_SUCCESS_WITH_INFO) {
return 0;
}
free_cols(stmt, S TSRMLS_CC);
/* how many columns do we have ? */
SQLNumResultCols(S->stmt, &colcount);
stmt->column_count = (int)colcount;
S->cols = ecalloc(colcount, sizeof(pdo_odbc_column));
S->going_long = 0;
return 1;
}
struct pdo_stmt_methods odbc_stmt_methods = {
odbc_stmt_dtor,
odbc_stmt_execute,
odbc_stmt_fetch,
odbc_stmt_describe,
odbc_stmt_get_col,
odbc_stmt_param_hook,
odbc_stmt_set_param,
odbc_stmt_get_attr, /* get attr */
NULL, /* get column meta */
odbc_stmt_next_rowset
};
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: noet sw=4 ts=4 fdm=marker
* vim<600: noet sw=4 ts=4
*/
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