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dbdimp.c
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/* vim: set noai ts=4 et sw=4: */
/*
$Id: dbdimp.c 395 2008-01-08 05:33:11Z edpratomo $
Copyright (c) 1999-2008 Edwin Pratomo
Portions Copyright (c) 2001-2005 Daniel Ritz
You may distribute under the terms of either the GNU General Public
License or the Artistic License, as specified in the Perl README file,
with the exception that it cannot be placed on a CD-ROM or similar media
for commercial distribution without the prior approval of the author.
*/
#include "InterBase.h"
DBISTATE_DECLARE;
#define IB_SQLtimeformat(xxh, format, sv) \
do { \
STRLEN len; \
char *frmt = NULL; \
char *buf = SvPV(sv, len); \
if (len < 2 || len > 30) break; \
Newx(frmt, len + 1, char); \
strcpy(frmt, buf); \
if (format) Safefree(format); \
format = frmt; \
} while (0)
#define IB_alloc_sqlda(sqlda, n) \
do { \
short len = n; \
if (sqlda) \
{ \
Safefree(sqlda); \
sqlda = NULL; \
} \
Newxz(sqlda, XSQLDA_LENGTH(len), char); \
sqlda->sqln = len; \
sqlda->version = SQLDA_OK_VERSION; \
} while (0)
int create_cursor_name(SV *sth, imp_sth_t *imp_sth)
{
ISC_STATUS status[ISC_STATUS_LENGTH];
Newxz(imp_sth->cursor_name, 22, char);
sprintf(imp_sth->cursor_name, "perl%016.16x", imp_sth->stmt);
isc_dsql_set_cursor_name(status, &(imp_sth->stmt), imp_sth->cursor_name, 0);
if (ib_error_check(sth, status))
return FALSE;
else
return TRUE;
}
void dbd_init(dbistate_t *dbistate)
{
DBISTATE_INIT;
}
void ib_cleanup_st_prepare (imp_sth_t *imp_sth)
{
FREE_SETNULL(imp_sth->in_sqlda);
FREE_SETNULL(imp_sth->out_sqlda);
FREE_SETNULL(imp_sth->dateformat);
#ifdef IB_API_V6
FREE_SETNULL(imp_sth->timeformat);
FREE_SETNULL(imp_sth->timestampformat);
#endif
}
void ib_cleanup_st_execute (imp_sth_t *imp_sth)
{
if (imp_sth->in_sqlda)
{
int i;
XSQLVAR *var = imp_sth->in_sqlda->sqlvar;
for (i = 0; i < imp_sth->in_sqlda->sqln; i++, var++)
{
Safefree(var->sqldata);
var->sqldata = NULL;
if (var->sqlind)
*(var->sqlind) = -1; /* isNULL */
}
}
}
/* lower level error handling */
void do_error(SV *h, int rc, char *what)
{
D_imp_xxh(h);
SV *errstr = DBIc_ERRSTR(imp_xxh);
sv_setiv(DBIc_ERR(imp_xxh), (IV)rc);
sv_setpv(errstr, what);
if (DBIc_TRACE_LEVEL(imp_xxh) >= 2)
PerlIO_printf(DBIc_LOGPIO(imp_xxh), "%s error %d recorded: %s\n",
what, rc, SvPV(errstr,na));
}
#define CALC_AVAILABLE(buff) sizeof(buff) - strlen(buff) - 1
/* higher level error handling, check and decode status */
int ib_error_check(SV *h, ISC_STATUS *status)
{
if (status[0] == 1 && status[1] > 0)
{
long sqlcode;
unsigned int avail = 0;
#if !defined(FB_API_VER) || FB_API_VER < 20
ISC_STATUS *pvector = status;
#else
const ISC_STATUS *pvector = status;
#endif
#if defined (INCLUDE_TYPES_PUB_H)
ISC_SCHAR msg[1024], *pmsg;
#else
char msg[1024], *pmsg;
#endif
Zero(msg, sizeof(msg), char);
pmsg = msg;
if ((sqlcode = isc_sqlcode(status)) != 0)
{
isc_sql_interprete((short) sqlcode, pmsg, sizeof(msg));
avail = CALC_AVAILABLE(msg);
if (avail > 1) {
while (*pmsg) pmsg++;
*pmsg++ = '\n';
*pmsg++ = '-';
avail = CALC_AVAILABLE(msg);
}
}
#if !defined(FB_API_VER) || FB_API_VER < 20
while (isc_interprete(pmsg, &pvector))
#else
while (avail > 0 && fb_interpret(pmsg, avail, &pvector))
#endif
{
avail = CALC_AVAILABLE(msg);
if (avail > 1) {
while (*pmsg) pmsg++;
*pmsg++ = '\n';
*pmsg++ = '-';
avail = CALC_AVAILABLE(msg);
}
}
*--pmsg = '\0';
do_error(h, sqlcode, msg);
return FAILURE;
}
else return SUCCESS;
}
static int ib2sql_type(int ibtype)
{
/* InterBase Internal (not external) types */
switch(ibtype)
{
case SQL_TEXT:
case 453:
return DBI_SQL_CHAR;
case SQL_LONG:
case 497:
return DBI_SQL_INTEGER; /* integer */
case SQL_SHORT:
case 501:
return DBI_SQL_SMALLINT; /* smallint */
case SQL_FLOAT:
case 483:
return DBI_SQL_FLOAT;
case SQL_DOUBLE:
case 481:
return DBI_SQL_DOUBLE;
#ifndef IB_API_V6
case SQL_DATE:
case 511:
return DBI_SQL_TIMESTAMP; /* this is correct! */
#else /* V6.0/FB */
case SQL_TIMESTAMP:
case 511:
return DBI_SQL_TIMESTAMP;
case SQL_TYPE_DATE:
case 571:
return DBI_SQL_DATE;
case SQL_TYPE_TIME:
case 561:
return DBI_SQL_TIME;
#endif /* !IB_API_V6 */
case SQL_VARYING:
case 449:
return DBI_SQL_VARCHAR;
}
/* else map type into DBI reserved standard range */
return -9000 - ibtype;
}
#if 0
/* from DBI (ANSI/ISO/ODBC) types to InterBase types */
static int ib_sql_type(imp_sth_t *imp_sth, char *name, int sql_type)
{
/* XXX should detect DBI reserved standard type range here */
switch (sql_type) {
case DBI_SQL_NUMERIC:
case DBI_SQL_DECIMAL:
case DBI_SQL_INTEGER:
case DBI_SQL_BIGINT:
case DBI_SQL_TINYINT:
case DBI_SQL_SMALLINT:
case DBI_SQL_FLOAT:
case DBI_SQL_REAL:
case DBI_SQL_DOUBLE:
return 481;
case DBI_SQL_VARCHAR:
return 449;
case DBI_SQL_CHAR:
return 453;
case SQL_DATE:
case SQL_TIME:
case SQL_TIMESTAMP:
default:
if (DBIc_WARN(imp_sth) && imp_sth && name)
warn("SQL type %d for '%s' is not fully supported, bound as SQL_VARCHAR instead");
return ib_sql_type(imp_sth, name, DBI_SQL_VARCHAR);
}
}
#endif
int dbd_db_login6(SV *dbh, imp_dbh_t *imp_dbh, char *dbname, char *uid,
char *pwd, SV *attr)
{
dTHR;
ISC_STATUS status[ISC_STATUS_LENGTH];
HV *hv;
SV *sv;
SV **svp; /* versatile scalar storage */
unsigned short ib_dialect, ib_cache;
char *ib_charset, *ib_role;
char ISC_FAR *dpb_buffer, *dpb;
char ISC_FAR *database;
STRLEN len; /* for SvPV */
char dbkey_scope = 0;
short dpb_length = 0;
unsigned int buflen = 0; /* buffer size is dynamic */
imp_dbh->db = 0L;
imp_dbh->tr = 0L;
imp_dbh->tpb_buffer = NULL;
imp_dbh->tpb_length = 0;
imp_dbh->sth_ddl = 0;
imp_dbh->soft_commit = 0; /* use soft commit (isc_commit_retaining)? */
/* default date/time formats
+ *
* Old API: dateformat ........ %c
* timeformat ........ (none)
* timestampformat ... (none)
*
* v6 API: dateformat ........ %x
* timeformat ........ %X
* timestampformat ... %c
*/
Newxz(imp_dbh->dateformat, 3, char);
#ifndef IB_API_V6
strcpy(imp_dbh->dateformat, "%c");
#else
strcpy(imp_dbh->dateformat, "%x");
Newxz(imp_dbh->timeformat, 3, char);
strcpy(imp_dbh->timeformat, "%X");
Newxz(imp_dbh->timestampformat, 3, char);
strcpy(imp_dbh->timestampformat, "%c");
#endif
/* linked list */
imp_dbh->first_sth = NULL;
imp_dbh->last_sth = NULL;
/* save the current context for thread/multiplicy safety */
#if defined(USE_THREADS) || defined(USE_ITHREADS) || defined(MULTIPLICITY)
imp_dbh->context = PERL_GET_CONTEXT;
#endif
/* Parse DSN and init values */
sv = DBIc_IMP_DATA(imp_dbh);
if (!sv || !SvROK(sv))
return FALSE;
hv = (HV*) SvRV(sv);
if (SvTYPE(hv) != SVt_PVHV)
return FALSE;
if (uid != NULL) {
buflen += strlen(uid) + 1;
buflen += 2;
}
if (pwd != NULL) {
buflen += strlen(pwd) + 1;
buflen += 2;
}
/* does't go to DPB -> no buflen inc */
if ((svp = hv_fetch(hv, "database", 8, FALSE)))
database = SvPV(*svp, len);
else database = NULL;
/* role, cache, charset, sqldialect */
if ((svp = hv_fetch(hv, "ib_dialect", 10, FALSE)))
ib_dialect = (unsigned short) SvIV(*svp);
else
ib_dialect = DEFAULT_SQL_DIALECT;
buflen += 5;
if ((svp = hv_fetch(hv, "ib_cache", 8, FALSE)))
{
ib_cache = (unsigned short) SvIV(*svp);
buflen += 5;
}
else
ib_cache = 0;
if ((svp = hv_fetch(hv, "ib_charset", 10, FALSE)))
{
ib_charset = SvPV(*svp, len);
buflen += len + 2;
}
else
ib_charset = NULL;
if ((svp = hv_fetch(hv, "ib_role", 7, FALSE)))
{
ib_role = SvPV(*svp, len);
buflen += len + 2;
}
else
ib_role = NULL;
if ((svp = hv_fetch(hv, "ib_dbkey_scope", 14, FALSE)))
{
dbkey_scope = (char)SvIV(*svp);
if (dbkey_scope)
buflen += 5;
}
/* add length of other parameters to needed buflen */
buflen += 1; /* dbpversion */
DBI_TRACE_imp_xxh(imp_dbh, 2, (DBIc_LOGPIO(imp_dbh), "dbd_db_login6\n"));
/* Allocate DPB */
Newx(dpb_buffer, buflen, char);
/* Default SQL dialect for every statement */
imp_dbh->sqldialect = ib_dialect;
/* Fill DPB */
dpb = dpb_buffer;
DPB_FILL_BYTE(dpb, isc_dpb_version1);
DPB_FILL_BYTE(dpb, isc_dpb_user_name);
DPB_FILL_STRING(dpb, uid);
DPB_FILL_BYTE(dpb, isc_dpb_password);
DPB_FILL_STRING(dpb, pwd);
if (ib_cache)
{
/*
* Safety check: Do not allocate a cache buffer greater than
* 10000 pages, so we don't exhaust memory inadvertently.
*/
if (ib_cache > 10000) ib_cache = 10000;
DPB_FILL_BYTE(dpb, isc_dpb_num_buffers);
DPB_FILL_INTEGER(dpb, ib_cache);
}
#ifdef IB_API_V6
DPB_FILL_BYTE(dpb, isc_dpb_sql_dialect);
DPB_FILL_INTEGER(dpb, ib_dialect);
#endif
if (dbkey_scope)
{
DPB_FILL_BYTE(dpb, isc_dpb_dbkey_scope);
DPB_FILL_INTEGER(dpb, dbkey_scope);
}
if (ib_charset)
{
DPB_FILL_BYTE(dpb, isc_dpb_lc_ctype);
DPB_FILL_STRING(dpb, ib_charset);
}
if (ib_role)
{
DPB_FILL_BYTE(dpb, isc_dpb_sql_role_name);
DPB_FILL_STRING(dpb, ib_role);
}
dpb_length = dpb - dpb_buffer;
DBI_TRACE_imp_xxh(imp_dbh, 3, (DBIc_LOGPIO(imp_dbh), "dbd_db_login6: attaching to database %s..\n", database));
isc_attach_database(status, /* status vector */
0, /* connect string is null-terminated */
database, /* connect string */
&(imp_dbh->db), /* ref to db handle */
dpb_length, /* length of dpb */
dpb_buffer); /* connect options */
/* freeing database parameter buffer */
Safefree(dpb_buffer);
/* return false on failed attach */
if (ib_error_check(dbh, status))
return FALSE;
DBI_TRACE_imp_xxh(imp_dbh, 3, (DBIc_LOGPIO(imp_dbh), "dbd_db_login6: success attaching.\n"));
/* Tell DBI, that dbh->destroy should be called for this handle */
DBIc_IMPSET_on(imp_dbh);
/* Tell DBI, that dbh->disconnect should be called for this handle */
DBIc_ACTIVE_on(imp_dbh);
return TRUE;
}
int dbd_db_login(SV *dbh, imp_dbh_t *imp_dbh, char *dbname, char *uid,
char *pwd)
{
return dbd_db_login6(dbh, imp_dbh, dbname, uid, pwd, Nullsv);
}
int dbd_db_ping(SV *dbh)
{
D_imp_dbh(dbh);
ISC_STATUS status[ISC_STATUS_LENGTH];
char buffer[100];
DBI_TRACE_imp_xxh(imp_dbh, 1, (DBIc_LOGPIO(imp_dbh), "dbd_db_ping\n"));
if (isc_database_info(status, &(imp_dbh->db), 0, NULL, sizeof(buffer), buffer))
if (ib_error_check(dbh, status))
return FALSE;
return TRUE;
}
int dbd_db_disconnect(SV *dbh, imp_dbh_t *imp_dbh)
{
dTHR;
ISC_STATUS status[ISC_STATUS_LENGTH];
DBI_TRACE_imp_xxh(imp_dbh, 2, (DBIc_LOGPIO(imp_dbh), "dbd_db_disconnect\n"));
/* set the database handle to inactive */
DBIc_ACTIVE_off(imp_dbh);
/* always do a rollback if there's an open transaction.
* InterBase requires to close open transactions before
* detaching a database.
*/
if (imp_dbh->tr)
{
/* rollback and close trans context */
isc_rollback_transaction(status, &(imp_dbh->tr));
if (ib_error_check(dbh, status))
return FALSE;
imp_dbh->tr = 0L;
}
FREE_SETNULL(imp_dbh->tpb_buffer);
FREE_SETNULL(imp_dbh->dateformat);
#ifdef IB_API_V6
FREE_SETNULL(imp_dbh->timeformat);
FREE_SETNULL(imp_dbh->timestampformat);
#endif
/* detach database */
isc_detach_database(status, &(imp_dbh->db));
if (ib_error_check(dbh, status))
return FALSE;
return TRUE;
}
void dbd_db_destroy (SV *dbh, imp_dbh_t *imp_dbh)
{
DBI_TRACE_imp_xxh(imp_dbh, 2, (DBIc_LOGPIO(imp_dbh), "dbd_db_destroy\n"));
if (DBIc_ACTIVE(imp_dbh))
dbd_db_disconnect(dbh, imp_dbh);
/* Nothing in imp_dbh to be freed */
DBIc_IMPSET_off(imp_dbh);
}
int dbd_db_commit (SV *dbh, imp_dbh_t *imp_dbh)
{
DBI_TRACE_imp_xxh(imp_dbh, 2, (DBIc_LOGPIO(imp_dbh), "dbd_db_commit\n"));
/* no commit if AutoCommit on */
if (DBIc_has(imp_dbh, DBIcf_AutoCommit))
return FALSE;
/* commit the transaction */
if (!ib_commit_transaction(dbh, imp_dbh))
return FALSE;
DBI_TRACE_imp_xxh(imp_dbh, 3, (DBIc_LOGPIO(imp_dbh), "dbd_db_commit succeed.\n"));
return TRUE;
}
int dbd_db_rollback(SV *dbh, imp_dbh_t *imp_dbh)
{
DBI_TRACE_imp_xxh(imp_dbh, 2, (DBIc_LOGPIO(imp_dbh), "dbd_db_rollback\n"));
/* no rollback if AutoCommit = on */
if (DBIc_has(imp_dbh, DBIcf_AutoCommit) != FALSE)
return FALSE;
/* rollback the transaction */
if (!ib_rollback_transaction(dbh, imp_dbh))
return FALSE;
DBI_TRACE_imp_xxh(imp_dbh, 3, (DBIc_LOGPIO(imp_dbh), "dbd_db_rollback succeed.\n"));
return TRUE;
}
int dbd_db_STORE_attrib(SV *dbh, imp_dbh_t *imp_dbh, SV *keysv, SV *valuesv)
{
STRLEN kl;
char *key = SvPV(keysv, kl);
int on = SvTRUE(valuesv)? 1: 0;
int oldval;
int set_frmts = 0;
DBI_TRACE_imp_xxh(imp_dbh, 2, (DBIc_LOGPIO(imp_dbh), "dbd_db_STORE - %s\n", key));
/**************************************************************************/
if ((kl==10) && strEQ(key, "AutoCommit"))
{
oldval = DBIc_has(imp_dbh, DBIcf_AutoCommit)? 1: 0;
DBIc_set(imp_dbh, DBIcf_AutoCommit, on);
DBI_TRACE_imp_xxh(imp_dbh, 3, (DBIc_LOGPIO(imp_dbh), "dbd_db_STORE: switch AutoCommit from %d to %d\n", oldval, on));
if (oldval == FALSE && on)
{
/* AutoCommit set from 0 to 1, commit any outstanding changes */
if (imp_dbh->tr)
{
if (!ib_commit_transaction(dbh, imp_dbh))
return FALSE;
DBI_TRACE_imp_xxh(imp_dbh, 3, (DBIc_LOGPIO(imp_dbh), "dbd_db_STORE: commit open transaction\n"));
}
}
return TRUE; /* handled */
}
/**************************************************************************/
else if ((kl==13) && strEQ(key, "ib_softcommit"))
{
oldval = imp_dbh->soft_commit;
DBI_TRACE_imp_xxh(imp_dbh, 3, (DBIc_LOGPIO(imp_dbh), "dbd_db_STORE: switch ib_softcommit from %d to %d\n", oldval, on));
/* set new value */
imp_dbh->soft_commit = on;
/* switching softcommit from 1 to 0 -> make a hard commit */
if (!on && oldval)
{
if (imp_dbh->tr)
{
if (!ib_commit_transaction(dbh, imp_dbh))
return FALSE;
DBI_TRACE_imp_xxh(imp_dbh, 3, (DBIc_LOGPIO(imp_dbh), "dbd_db_STORE: commit open transaction\n"));
}
}
return TRUE; /* handled */
}
else if ((kl==11) && strEQ(key, "ib_time_all"))
set_frmts = 1;
/**************************************************************************/
if (set_frmts || ((kl==13) && strEQ(key, "ib_dateformat")))
{
IB_SQLtimeformat(dbh, imp_dbh->dateformat, valuesv);
if (!set_frmts) return TRUE;
}
#ifdef IB_API_V6
if (set_frmts || ((kl==13) && strEQ(key, "ib_timeformat")))
{
IB_SQLtimeformat(dbh, imp_dbh->timeformat, valuesv);
if (!set_frmts) return TRUE;
}
if (set_frmts || ((kl==18) && strEQ(key, "ib_timestampformat")))
{
IB_SQLtimeformat(dbh, imp_dbh->timestampformat, valuesv);
if (!set_frmts) return TRUE;
}
#endif
/**************************************************************************/
if (set_frmts) return TRUE;
else return FALSE; /* not handled */
}
SV *dbd_db_FETCH_attrib(SV *dbh, imp_dbh_t *imp_dbh, SV *keysv)
{
STRLEN kl;
char * key = SvPV(keysv, kl);
SV * result = NULL;
DBI_TRACE_imp_xxh(imp_dbh, 2, (DBIc_LOGPIO(imp_dbh), "dbd_db_FETCH - %s\n", key));
if ((kl==10) && strEQ(key, "AutoCommit"))
result = boolSV(DBIc_has(imp_dbh, DBIcf_AutoCommit));
else if ((kl==13) && strEQ(key, "ib_softcommit"))
result = boolSV(imp_dbh->soft_commit);
else if ((kl==13) && strEQ(key, "ib_dateformat"))
result = newSVpvn(imp_dbh->dateformat, strlen(imp_dbh->dateformat));
#ifdef IB_API_V6
else if ((kl==13) && strEQ(key, "ib_timeformat"))
result = newSVpvn(imp_dbh->timeformat, strlen(imp_dbh->timeformat));
else if ((kl==18) && strEQ(key, "ib_timestampformat"))
result = newSVpvn(imp_dbh->timestampformat,
strlen(imp_dbh->timestampformat));
#endif
if (result == NULL)
return Nullsv;
else
{
if ((result == &sv_yes) || (result == &sv_no))
return result;
else
return sv_2mortal(result);
}
}
void dbd_preparse(SV *sth, imp_sth_t *imp_sth, char *statement)
{
ISC_STATUS status[ISC_STATUS_LENGTH];
DBI_TRACE_imp_xxh(imp_sth, 2, (DBIc_LOGPIO(imp_sth), "Enter dbd_preparse\n"));
isc_dsql_describe_bind(status, &(imp_sth->stmt), 1, imp_sth->in_sqlda);
if (ib_error_check(sth, status))
{
ib_cleanup_st_prepare(imp_sth);
return;
}
/* realloc in_sqlda and rebind if not enough XSQLVAR for bind params */
if (imp_sth->in_sqlda->sqld > imp_sth->in_sqlda->sqln)
{
IB_alloc_sqlda(imp_sth->in_sqlda, imp_sth->in_sqlda->sqld);
if (imp_sth->in_sqlda == NULL)
{
do_error(sth, 1, "Fail to reallocate in_slqda");
ib_cleanup_st_prepare(imp_sth);
return;
}
else
{
isc_dsql_describe_bind(status, &(imp_sth->stmt), 1, imp_sth->in_sqlda);
if (ib_error_check(sth, status))
{
ib_cleanup_st_prepare(imp_sth);
return;
}
}
}
DBI_TRACE_imp_xxh(imp_sth, 3, (DBIc_LOGPIO(imp_sth), "dbd_preparse: describe_bind passed.\n"
"dbd_preparse: exit; in_sqlda: sqld: %d, sqln: %d.\n",
imp_sth->in_sqlda->sqld, imp_sth->in_sqlda->sqln));
DBIc_NUM_PARAMS(imp_sth) = imp_sth->in_sqlda->sqld;
}
int dbd_st_prepare(SV *sth, imp_sth_t *imp_sth, char *statement, SV *attribs)
{
D_imp_dbh_from_sth;
ISC_STATUS status[ISC_STATUS_LENGTH];
int i;
short dtype;
static char stmt_info[1];
char info_buffer[20], count_item;
XSQLVAR *var;
DBI_TRACE_imp_xxh(imp_sth, 2, (DBIc_LOGPIO(imp_sth), "Enter dbd_st_prepare\n"));
if (!DBIc_ACTIVE(imp_dbh))
{
do_error(sth, -1, "Database disconnected");
return FALSE;
}
/* init values */
count_item = 0;
imp_sth->count_item = 0;
imp_sth->fetched = -1;
imp_sth->in_sqlda = NULL;
imp_sth->out_sqlda = NULL;
imp_sth->cursor_name = NULL;
imp_sth->dateformat = NULL;
#ifdef IB_API_V6
imp_sth->timestampformat = NULL;
imp_sth->timeformat = NULL;
#endif
/* double linked list */
imp_sth->prev_sth = NULL;
imp_sth->next_sth = NULL;
if (attribs)
{
SV **svp;
if ((svp = DBD_ATTRIB_GET_SVP(attribs, "ib_time_all", 11)) != NULL)
{
IB_SQLtimeformat(sth, imp_sth->dateformat, *svp);
#ifdef IB_API_V6
IB_SQLtimeformat(sth, imp_sth->timestampformat, *svp);
IB_SQLtimeformat(sth, imp_sth->timeformat, *svp);
#endif
}
if ((svp = DBD_ATTRIB_GET_SVP(attribs, "ib_dateformat", 13)) != NULL)
IB_SQLtimeformat(sth, imp_sth->dateformat, *svp);
#ifdef IB_API_V6
if ((svp = DBD_ATTRIB_GET_SVP(attribs, "ib_timestampformat", 18)) != NULL)
IB_SQLtimeformat(sth, imp_sth->timestampformat, *svp);
if ((svp = DBD_ATTRIB_GET_SVP(attribs, "ib_timeformat", 13)) != NULL)
IB_SQLtimeformat(sth, imp_sth->timeformat, *svp);
#endif
}
/* allocate 1 XSQLVAR to in_sqlda */
IB_alloc_sqlda(imp_sth->in_sqlda, 1);
if (imp_sth->in_sqlda == NULL)
{
do_error(sth, 2, "Fail to allocate in_sqlda");
return FALSE;
}
/* allocate 1 XSQLVAR to out_sqlda */
IB_alloc_sqlda(imp_sth->out_sqlda, 1);
if (imp_sth->out_sqlda == NULL)
{
do_error(sth, 2, "Fail to allocate out_sqlda");
ib_cleanup_st_prepare(imp_sth);
return FALSE;
}
/* init statement handle */
isc_dsql_alloc_statement2(status, &(imp_dbh->db), &(imp_sth->stmt));
if (ib_error_check(sth, status))
{
ib_cleanup_st_prepare(imp_sth);
return FALSE;
}
DBI_TRACE_imp_xxh(imp_sth, 3, (DBIc_LOGPIO(imp_sth), "dbd_st_prepare: sqldialect: %d.\n", imp_dbh->sqldialect));
if (!imp_dbh->tr)
{
/* start a new transaction using current TPB */
if (!ib_start_transaction(sth, imp_dbh))
{
ib_cleanup_st_prepare(imp_sth);
return FALSE;
}
}
DBI_TRACE_imp_xxh(imp_sth, 3, (DBIc_LOGPIO(imp_sth), "dbd_st_prepare: statement: %s.\n", statement));
isc_dsql_prepare(status, &(imp_dbh->tr), &(imp_sth->stmt), 0, statement,
imp_dbh->sqldialect, imp_sth->out_sqlda);
if (ib_error_check(sth, status))
{
ib_cleanup_st_prepare(imp_sth);
return FALSE;
}
DBI_TRACE_imp_xxh(imp_sth, 3, (DBIc_LOGPIO(imp_sth), "dbd_st_prepare: isc_dsql_prepare succeed..\n"));
stmt_info[0] = isc_info_sql_stmt_type;
isc_dsql_sql_info(status, &(imp_sth->stmt), sizeof (stmt_info), stmt_info,
sizeof (info_buffer), info_buffer);
if (ib_error_check(sth, status))
{
ib_cleanup_st_prepare(imp_sth);
return FALSE;
}
{
short l = (short) isc_vax_integer((char *) info_buffer + 1, 2);
imp_sth->type = isc_vax_integer((char *) info_buffer + 3, l);
}
/* sanity check of statement type */
DBI_TRACE_imp_xxh(imp_sth, 3, (DBIc_LOGPIO(imp_sth), "dbd_st_prepare: statement type: %ld.\n", imp_sth->type));
switch (imp_sth->type)
{
/* Implemented statement types. */
case isc_info_sql_stmt_select:
case isc_info_sql_stmt_select_for_upd:
/*
* Unfortunately, select count item doesn't work
* in current versions of InterBase.
* isql does it literally by fetching everything
* and counting the number of rows it fetched.
* InterBase doesn't seem to be able to estimate
* the number of rows before the client app
* fetches them all.
*/
//count_item = isc_info_req_select_count;
break;
case isc_info_sql_stmt_insert:
count_item = isc_info_req_insert_count;
break;
case isc_info_sql_stmt_update:
count_item = isc_info_req_update_count;
break;
case isc_info_sql_stmt_delete:
count_item = isc_info_req_delete_count;
break;
case isc_info_sql_stmt_ddl:
case isc_info_sql_stmt_set_generator:
case isc_info_sql_stmt_exec_procedure:
/* no count_item to gather */
break;
/*
* Unimplemented statement types. Some may be implemented in the future.
*/
case isc_info_sql_stmt_get_segment:
case isc_info_sql_stmt_put_segment:
case isc_info_sql_stmt_start_trans:
case isc_info_sql_stmt_commit:
case isc_info_sql_stmt_rollback:
default:
do_error(sth, 10, "Statement type is not implemented in this version of DBD::InterBase");
return FALSE;
break;
}
imp_sth->count_item = count_item;
/* scan statement for '?', ':1' and/or ':foo' style placeholders */
/* realloc in_sqlda where needed */
dbd_preparse(sth, imp_sth, statement);
DBI_TRACE_imp_xxh(imp_sth, 3, (DBIc_LOGPIO(imp_sth), "dbd_st_prepare: dbd_describe passed.\n"
"out_sqlda: sqld: %d, sqln: %d.\n",
imp_sth->out_sqlda->sqld, imp_sth->out_sqlda->sqln));
/* enough output parameter block ? */
if (imp_sth->out_sqlda->sqld > imp_sth->out_sqlda->sqln)
{
DBI_TRACE_imp_xxh(imp_sth, 3, (DBIc_LOGPIO(imp_sth), "dbd_st_prepare: realloc out_sqlda..\n"));
IB_alloc_sqlda(imp_sth->out_sqlda, imp_sth->out_sqlda->sqld);
if (imp_sth->out_sqlda == NULL)
{
do_error(sth, IB_ALLOC_FAIL, "Fail to reallocate out_sqlda");
ib_cleanup_st_prepare(imp_sth);
return FALSE;
}
else
{
DBI_TRACE_imp_xxh(imp_sth, 3, (DBIc_LOGPIO(imp_sth), "dbd_st_prepare: calling isc_dsql_describe again..\n"));
isc_dsql_describe(status, &(imp_sth->stmt), 1, imp_sth->out_sqlda);
if (ib_error_check(sth, status))
{
ib_cleanup_st_prepare(imp_sth);
return FALSE;
}
DBI_TRACE_imp_xxh(imp_sth, 3, (DBIc_LOGPIO(imp_sth), "dbd_st_prepare: success calling isc_dsql_describe.\n"));
}
}
else if (imp_sth->out_sqlda->sqld == 0) /* not a select statement */
{
Safefree(imp_sth->out_sqlda);
imp_sth->out_sqlda = NULL;
}
if (imp_sth->out_sqlda)
{
for (i = 0, var = imp_sth->out_sqlda->sqlvar;
i < imp_sth->out_sqlda->sqld;
i++, var++)
{
dtype = (var->sqltype & ~1);
var->sqlind = NULL;
DBI_TRACE_imp_xxh(imp_sth, 3, (DBIc_LOGPIO(imp_sth), "dbd_st_prepare: field type: %d.\n", dtype));
/* Alloc space for sqldata */
Newx(var->sqldata,
var->sqllen + (dtype == SQL_VARYING ? sizeof(short) : 0),
ISC_SCHAR);
/* Nullable? */
if (var->sqltype & 1)
Newx(var->sqlind, 1, short);
}
}
/* statment is valid -> insert into linked list (at begin) */
imp_sth->next_sth = imp_dbh->first_sth;
if (imp_dbh->first_sth == NULL)
imp_dbh->last_sth = imp_sth;
else
imp_dbh->first_sth->prev_sth = imp_sth;
imp_dbh->first_sth = imp_sth;
DBI_TRACE_imp_xxh(imp_sth, 3, (DBIc_LOGPIO(imp_sth), "dbd_st_prepare: sth inserted into linked list.\n"));
/* tell DBI that we have a real statement handle now */
DBIc_IMPSET_on(imp_sth);
return TRUE;
}
int dbd_st_execute(SV *sth, imp_sth_t *imp_sth)
{
D_imp_dbh_from_sth;