Files
harbour-core/contrib/rddsql/sqlbase.c
Przemysław Czerpak 62478c5657 2014-10-03 16:03 UTC+0200 Przemyslaw Czerpak (druzus/at/poczta.onet.pl)
* src/rdd/wafunc.c
    % use dynamic symbol pointer to find field index

  * src/rdd/workarea.c
    * set default maximum field size to HB_SYMBOL_NAME_LEN characters
      (by default in Harbour builds HB_SYMBOL_NAME_LEN is 63)
      Some RDDs may set longer names but it will be respected only by
      FieldName() function and in all other cases only HB_SYMBOL_NAME_LEN
      characters is significant for Harbour so such decision should be
      well thought by RDD authors because it may confuse users.
      Warning: all 3-rd party RDDs which need to force shorter names
               should update uiMaxFieldNameLength in their NEW() method
               just after SUPER_NEW() call, i.e. like in core DBF RDD.
    ! respect uiMaxFieldNameLength when new fields are added

  * src/rdd/dbf1.c
    * set maximum field size to 10 characters

  * contrib/rddsql/sqlbase.c
    - removed code used to set uiMaxFieldNameLength to HB_SYMBOL_NAME_LEN.
      Now it's default field length value for each RDD unless it does not
      change it.

  * contrib/rddads/ads1.c
    * minor modification in adsFieldName()

  * contrib/hbwin/wapi_winbase.c
    + added support for FORMAT_MESSAGE_ALLOCATE_BUFFER and 6-th <nSize>
      parameter to wapi_FormatMessage() function. The 6-th <nSize> parameter
      has higher priority then size of string passed in the 5-th parameter.
    ! fixed potential memory leak
2014-10-03 16:03:55 +02:00

1260 lines
36 KiB
C

/*
* SQL Base Database Driver
*
* Copyright 2007 Mindaugas Kavaliauskas <dbtopas at dbtopas.lt>
* www - http://harbour-project.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING.txt. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
*
* As a special exception, the Harbour Project gives permission for
* additional uses of the text contained in its release of Harbour.
*
* The exception is that, if you link the Harbour libraries with other
* files to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the Harbour library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the Harbour
* Project under the name Harbour. If you copy code from other
* Harbour Project or Free Software Foundation releases into a copy of
* Harbour, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for Harbour, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice.
*
*/
#include "hbapi.h"
#include "hbapiitm.h"
#include "hbvm.h"
#include "hbset.h"
#include "hbrddsql.h"
#include "rddsys.ch"
#include "hbtrace.h"
#define SUPERTABLE ( &sqlbaseSuper )
#define CONNECTION_LIST_EXPAND 4
static HB_USHORT s_rddidSQLBASE = 0;
static SQLDDCONNECTION ** s_pConnection = NULL;
static HB_ULONG s_ulConnectionCount = 0;
static HB_ULONG s_ulConnectionCurrent = 0;
static char * s_szError = NULL;
static HB_ERRCODE s_errCode = 0;
static char * s_szQuery = NULL;
static PHB_ITEM s_pItemNewID = NULL;
static unsigned long s_ulAffectedRows = 0;
static RDDFUNCS sqlbaseSuper;
void hb_rddsqlSetError( HB_ERRCODE errCode, const char * szError, const char * szQuery, PHB_ITEM pItem, unsigned long ulAffectedRows )
{
s_errCode = errCode;
if( s_szError )
{
hb_xfree( s_szError );
s_szError = NULL;
}
if( szError )
s_szError = hb_strdup( szError );
if( s_szQuery )
{
hb_xfree( s_szQuery );
s_szQuery = NULL;
}
if( szQuery )
s_szQuery = hb_strdup( szQuery );
if( pItem )
hb_itemCopy( s_pItemNewID, pItem );
else
hb_itemClear( s_pItemNewID );
s_ulAffectedRows = ulAffectedRows;
}
static HB_ERRCODE hb_errRT_SQLBASE( HB_ERRCODE errGenCode, HB_ERRCODE errSubCode, const char * szDescription, const char * szOperation )
{
PHB_ITEM pError;
HB_ERRCODE iRet = HB_FAILURE;
if( hb_vmRequestQuery() == 0 )
{
pError = hb_errRT_New( ES_ERROR, "SQLBASE", errGenCode, errSubCode, szDescription, szOperation, 0, EF_NONE );
iRet = hb_errLaunch( pError );
hb_itemRelease( pError );
}
return iRet;
}
/*================ NULL SDD ==========================================================*/
static HB_ERRCODE sddConnect( SQLDDCONNECTION * pConnection, PHB_ITEM pItem );
static HB_ERRCODE sddDisconnect( SQLDDCONNECTION * pConnection );
static HB_ERRCODE sddExecute( SQLDDCONNECTION * pConnection, PHB_ITEM pItem );
static HB_ERRCODE sddOpen( SQLBASEAREAP pArea );
static HB_ERRCODE sddClose( SQLBASEAREAP pArea );
static HB_ERRCODE sddGoTo( SQLBASEAREAP pArea, HB_ULONG ulRecNo );
static HB_ERRCODE sddGetValue( SQLBASEAREAP pArea, HB_USHORT uiIndex, PHB_ITEM pItem );
static HB_ERRCODE sddGetVarLen( SQLBASEAREAP pArea, HB_USHORT uiIndex, HB_ULONG * pLength );
static SDDNODE sddNull = {
NULL,
"NULL",
( SDDFUNC_CONNECT ) sddConnect,
( SDDFUNC_DISCONNECT ) sddDisconnect,
( SDDFUNC_EXECUTE ) sddExecute,
( SDDFUNC_OPEN ) sddOpen,
( SDDFUNC_CLOSE ) sddClose,
( SDDFUNC_GOTO ) sddGoTo,
( SDDFUNC_GETVALUE ) sddGetValue,
( SDDFUNC_GETVARLEN ) sddGetVarLen
};
static HB_ERRCODE sddConnect( SQLDDCONNECTION * pConnection, PHB_ITEM pItem )
{
HB_SYMBOL_UNUSED( pConnection );
HB_SYMBOL_UNUSED( pItem );
hb_errRT_SQLBASE( EG_UNSUPPORTED, ESQLDD_NULLSDD, NULL, NULL );
return HB_FAILURE;
}
static HB_ERRCODE sddDisconnect( SQLDDCONNECTION * pConnection )
{
HB_SYMBOL_UNUSED( pConnection );
hb_errRT_SQLBASE( EG_UNSUPPORTED, ESQLDD_NULLSDD, NULL, NULL );
return HB_FAILURE;
}
static HB_ERRCODE sddExecute( SQLDDCONNECTION * pConnection, PHB_ITEM pItem )
{
HB_SYMBOL_UNUSED( pConnection );
HB_SYMBOL_UNUSED( pItem );
hb_errRT_SQLBASE( EG_UNSUPPORTED, ESQLDD_NULLSDD, NULL, NULL );
return HB_FAILURE;
}
static HB_ERRCODE sddOpen( SQLBASEAREAP pArea )
{
HB_SYMBOL_UNUSED( pArea );
hb_errRT_SQLBASE( EG_UNSUPPORTED, ESQLDD_NULLSDD, NULL, NULL );
return HB_FAILURE;
}
static HB_ERRCODE sddClose( SQLBASEAREAP pArea )
{
HB_SYMBOL_UNUSED( pArea );
return HB_SUCCESS;
}
static HB_ERRCODE sddGoTo( SQLBASEAREAP pArea, HB_ULONG ulRecNo )
{
if( ulRecNo == 0 || ulRecNo > pArea->ulRecCount )
{
pArea->pRecord = pArea->pRow[ 0 ];
pArea->bRecordFlags = pArea->pRowFlags[ 0 ];
pArea->fPositioned = HB_FALSE;
}
else
{
pArea->pRecord = pArea->pRow[ ulRecNo ];
pArea->bRecordFlags = pArea->pRowFlags[ ulRecNo ];
pArea->fPositioned = HB_TRUE;
}
return HB_SUCCESS;
}
static HB_ERRCODE sddGetValue( SQLBASEAREAP pArea, HB_USHORT uiIndex, PHB_ITEM pItem )
{
HB_SYMBOL_UNUSED( pArea );
HB_SYMBOL_UNUSED( uiIndex );
HB_SYMBOL_UNUSED( pItem );
hb_errRT_SQLBASE( EG_UNSUPPORTED, ESQLDD_NULLSDD, NULL, NULL );
return HB_FAILURE;
}
static HB_ERRCODE sddGetVarLen( SQLBASEAREAP pArea, HB_USHORT uiIndex, HB_ULONG * pLength )
{
HB_SYMBOL_UNUSED( pArea );
HB_SYMBOL_UNUSED( uiIndex );
HB_SYMBOL_UNUSED( pLength );
hb_errRT_SQLBASE( EG_UNSUPPORTED, ESQLDD_NULLSDD, NULL, NULL );
return HB_SUCCESS;
}
/*==================== SDD registration =====================================*/
static PSDDNODE s_pSdd = NULL;
int hb_sddRegister( PSDDNODE pSdd )
{
PSDDNODE pNode = s_pSdd;
/* "Inheritance" from NULL SDD */
if( pSdd->Connect == NULL )
pSdd->Connect = sddNull.Connect;
if( pSdd->Disconnect == NULL )
pSdd->Disconnect = sddNull.Disconnect;
if( pSdd->Execute == NULL )
pSdd->Execute = sddNull.Execute;
if( pSdd->Open == NULL )
pSdd->Open = sddNull.Open;
if( pSdd->Close == NULL )
pSdd->Close = sddNull.Close;
if( pSdd->GoTo == NULL )
pSdd->GoTo = sddNull.GoTo;
if( pSdd->GetValue == NULL )
pSdd->GetValue = sddNull.GetValue;
if( pSdd->GetVarLen == NULL )
pSdd->GetVarLen = sddNull.GetVarLen;
while( pNode )
{
if( ! hb_stricmp( pNode->Name, pSdd->Name ) )
return 0;
pNode = pNode->pNext;
}
pSdd->pNext = s_pSdd;
s_pSdd = pSdd;
return 1;
}
/*============= RDD METHODS =============================================================*/
static HB_ERRCODE sqlbaseGoBottom( SQLBASEAREAP pArea )
{
if( SELF_GOCOLD( ( AREAP ) pArea ) == HB_FAILURE )
return HB_FAILURE;
if( ! pArea->fFetched && pArea->pSDD->GoTo( pArea, ( HB_ULONG ) -1 ) == HB_FAILURE )
return HB_FAILURE;
pArea->area.fTop = HB_FALSE;
pArea->area.fBottom = HB_TRUE;
if( SELF_GOTO( ( AREAP ) pArea, pArea->ulRecCount ) != HB_SUCCESS )
return HB_FAILURE;
return SELF_SKIPFILTER( ( AREAP ) pArea, -1 );
}
static HB_ERRCODE sqlbaseGoTo( SQLBASEAREAP pArea, HB_ULONG ulRecNo )
{
if( SELF_GOCOLD( ( AREAP ) pArea ) == HB_FAILURE )
return HB_FAILURE;
if( pArea->pSDD->GoTo( pArea, ulRecNo ) == HB_FAILURE )
return HB_FAILURE;
if( pArea->fPositioned )
{
pArea->ulRecNo = ulRecNo;
pArea->area.fBof = pArea->area.fEof = HB_FALSE;
}
else
{
pArea->ulRecNo = pArea->ulRecCount + 1;
pArea->area.fBof = pArea->area.fEof = HB_TRUE;
}
pArea->area.fFound = HB_FALSE;
return HB_SUCCESS;
}
static HB_ERRCODE sqlbaseGoToId( SQLBASEAREAP pArea, PHB_ITEM pItem )
{
PHB_ITEM pError;
if( HB_IS_NUMERIC( pItem ) )
return SELF_GOTO( ( AREAP ) pArea, hb_itemGetNL( pItem ) );
else
{
pError = hb_errNew();
hb_errPutGenCode( pError, EG_DATATYPE );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_DATATYPE ) );
hb_errPutSubCode( pError, EDBF_DATATYPE );
SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return HB_FAILURE;
}
}
static HB_ERRCODE sqlbaseGoTop( SQLBASEAREAP pArea )
{
pArea->area.fTop = HB_TRUE;
pArea->area.fBottom = HB_FALSE;
if( SELF_GOTO( ( AREAP ) pArea, 1 ) == HB_FAILURE )
return HB_FAILURE;
return SELF_SKIPFILTER( ( AREAP ) pArea, 1 );
}
static HB_ERRCODE sqlbaseSkip( SQLBASEAREAP pArea, HB_LONG lToSkip )
{
HB_ERRCODE errCode;
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
}
pArea->area.fTop = pArea->area.fBottom = HB_FALSE;
if( lToSkip == 0 || hb_setGetDeleted() ||
pArea->area.dbfi.itmCobExpr || pArea->area.dbfi.fFilter )
return SUPER_SKIP( ( AREAP ) pArea, lToSkip );
errCode = SELF_SKIPRAW( ( AREAP ) pArea, lToSkip );
/* Move first record and set Bof flag */
if( errCode == HB_SUCCESS && pArea->area.fBof && lToSkip < 0 )
{
errCode = SELF_GOTOP( ( AREAP ) pArea );
pArea->area.fBof = HB_TRUE;
}
if( lToSkip < 0 )
pArea->area.fEof = HB_FALSE;
else /* if( lToSkip > 0 ) */
pArea->area.fBof = HB_FALSE;
return errCode;
}
static HB_ERRCODE sqlbaseSkipRaw( SQLBASEAREAP pArea, HB_LONG lToSkip )
{
HB_ERRCODE errCode;
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
}
if( lToSkip == 0 )
{
/* TODO: maybe gocold is enough here?! */
HB_BOOL bBof, bEof;
/* Save flags */
bBof = pArea->area.fBof;
bEof = pArea->area.fEof;
errCode = SELF_GOTO( ( AREAP ) pArea, pArea->ulRecNo );
/* Restore flags */
pArea->area.fBof = bBof;
pArea->area.fEof = bEof;
}
else if( lToSkip < 0 && ( HB_ULONG ) ( -lToSkip ) >= pArea->ulRecNo )
{
errCode = SELF_GOTO( ( AREAP ) pArea, 1 );
pArea->area.fBof = HB_TRUE;
}
else
errCode = SELF_GOTO( ( AREAP ) pArea, pArea->ulRecNo + lToSkip );
return errCode;
}
static HB_ERRCODE sqlbaseAppend( SQLBASEAREAP pArea, HB_BOOL bUnLockAll )
{
HB_SYMBOL_UNUSED( bUnLockAll );
/* This GOTO is GOCOLD + GOEOF */
if( SELF_GOTO( ( AREAP ) pArea, 0 ) == HB_FAILURE )
return HB_FAILURE;
if( ! pArea->fRecordChanged && SELF_GOHOT( ( AREAP ) pArea ) == HB_FAILURE )
return HB_FAILURE;
if( pArea->ulRecCount + 1 >= pArea->ulRecMax )
{
pArea->pRow = ( void ** ) hb_xrealloc( pArea->pRow, ( pArea->ulRecMax + SQLDD_ROWSET_RESIZE ) * sizeof( void * ) );
pArea->pRowFlags = ( HB_BYTE * ) hb_xrealloc( pArea->pRowFlags, ( pArea->ulRecMax + SQLDD_ROWSET_RESIZE ) * sizeof( HB_BYTE ) );
pArea->ulRecMax += SQLDD_ROWSET_RESIZE;
}
pArea->fAppend = pArea->fPositioned = HB_TRUE;
pArea->ulRecCount++;
pArea->ulRecNo = pArea->ulRecCount;
pArea->area.fBof = pArea->area.fEof = pArea->area.fFound = HB_FALSE;
return HB_SUCCESS;
}
static HB_ERRCODE sqlbaseDeleteRec( SQLBASEAREAP pArea )
{
if( ! pArea->fPositioned )
return HB_SUCCESS;
if( ! pArea->fRecordChanged && SELF_GOHOT( ( AREAP ) pArea ) == HB_FAILURE )
return HB_FAILURE;
pArea->bRecordFlags |= SQLDD_FLAG_DELETED;
return HB_SUCCESS;
}
static HB_ERRCODE sqlbaseDeleted( SQLBASEAREAP pArea, HB_BOOL * pDeleted )
{
*pDeleted = pArea->bRecordFlags & SQLDD_FLAG_DELETED;
return HB_SUCCESS;
}
static HB_ERRCODE sqlbaseGetValue( SQLBASEAREAP pArea, HB_USHORT uiIndex, PHB_ITEM pItem )
{
if( uiIndex == 0 || uiIndex > pArea->area.uiFieldCount )
return HB_FAILURE;
if( pArea->bRecordFlags & SQLDD_FLAG_CACHED )
{
hb_arrayGet( ( PHB_ITEM ) pArea->pRecord, uiIndex, pItem );
return HB_SUCCESS;
}
return pArea->pSDD->GetValue( pArea, uiIndex, pItem );
}
static HB_ERRCODE sqlbaseGetVarLen( SQLBASEAREAP pArea, HB_USHORT uiIndex, HB_ULONG * pLength )
{
/* TODO: should we use this code? */
#if 0
if( pArea->area.lpFields[ uiIndex ].uiType == HB_IT_MEMO )
return pArea->pSDD->GetVarLen( pArea, uiIndex, pLength );
#endif
*pLength = pArea->area.lpFields[ uiIndex - 1 ].uiLen;
return HB_SUCCESS;
}
static HB_ERRCODE sqlbaseGoCold( SQLBASEAREAP pArea )
{
if( pArea->fRecordChanged )
{
if( ! pArea->fAppend && pArea->pRowFlags[ pArea->ulRecNo ] & SQLDD_FLAG_CACHED )
hb_itemRelease( ( PHB_ITEM ) ( pArea->pRow[ pArea->ulRecNo ] ) );
pArea->pRow[ pArea->ulRecNo ] = pArea->pRecord;
pArea->pRowFlags[ pArea->ulRecNo ] = pArea->bRecordFlags;
pArea->fRecordChanged = HB_FALSE;
pArea->fAppend = HB_FALSE;
}
return HB_SUCCESS;
}
static HB_ERRCODE sqlbaseGoHot( SQLBASEAREAP pArea )
{
PHB_ITEM pArray, pItem;
HB_USHORT us;
pArray = hb_itemArrayNew( pArea->area.uiFieldCount );
for( us = 1; us <= pArea->area.uiFieldCount; us++ )
{
pItem = hb_itemNew( NULL );
if( SELF_GETVALUE( ( AREAP ) pArea, us, pItem ) == HB_SUCCESS )
hb_arraySetForward( pArray, us, pItem );
hb_itemRelease( pItem );
}
pArea->pRecord = pArray;
pArea->bRecordFlags |= SQLDD_FLAG_CACHED;
pArea->fRecordChanged = HB_TRUE;
return HB_SUCCESS;
}
static HB_ERRCODE sqlbasePutValue( SQLBASEAREAP pArea, HB_USHORT uiIndex, PHB_ITEM pItem )
{
LPFIELD pField;
HB_ERRCODE errCode;
if( uiIndex == 0 || uiIndex > pArea->area.uiFieldCount )
return HB_FAILURE;
if( ! pArea->fPositioned )
return HB_SUCCESS;
if( ! pArea->fRecordChanged && SELF_GOHOT( ( AREAP ) pArea ) == HB_FAILURE )
return HB_FAILURE;
errCode = HB_SUCCESS;
pField = pArea->area.lpFields + ( uiIndex - 1 );
if( ( ( HB_IS_MEMO( pItem ) || HB_IS_STRING( pItem ) ) && ( pField->uiType == HB_FT_STRING || pField->uiType == HB_FT_MEMO ) ) ||
( HB_IS_DATE( pItem ) && pField->uiType == HB_FT_DATE ) ||
( HB_IS_TIMESTAMP( pItem ) && pField->uiType == HB_FT_TIMESTAMP ) ||
( HB_IS_NUMBER( pItem ) && ( pField->uiType == HB_FT_INTEGER || pField->uiType == HB_FT_LONG ||
pField->uiType == HB_FT_FLOAT || pField->uiType == HB_FT_DOUBLE ) ) ||
( HB_IS_LOGICAL( pItem ) && pField->uiType == HB_FT_LOGICAL ) ||
HB_IS_NIL( pItem ) )
{
hb_arraySet( ( PHB_ITEM ) pArea->pRecord, uiIndex, pItem );
}
else
{
PHB_ITEM pError;
pError = hb_errNew();
hb_errPutGenCode( pError, EG_DATATYPE );
hb_errPutDescription( pError, hb_langDGetErrorDesc( EG_DATATYPE ) );
hb_errPutOperation( pError, hb_dynsymName( ( PHB_DYNS ) pField->sym ) );
hb_errPutSubCode( pError, errCode );
hb_errPutFlags( pError, EF_CANDEFAULT );
errCode = SELF_ERROR( ( AREAP ) pArea, pError );
hb_itemRelease( pError );
return errCode == E_DEFAULT ? HB_SUCCESS : HB_FAILURE;
}
return HB_SUCCESS;
}
static HB_ERRCODE sqlbaseRecall( SQLBASEAREAP pArea )
{
if( ! pArea->fPositioned )
return HB_SUCCESS;
if( ! pArea->fRecordChanged && SELF_GOHOT( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
pArea->bRecordFlags &= ~SQLDD_FLAG_DELETED;
return HB_SUCCESS;
}
static HB_ERRCODE sqlbaseRecCount( SQLBASEAREAP pArea, HB_ULONG * pRecCount )
{
*pRecCount = pArea->ulRecCount;
return HB_SUCCESS;
}
static HB_ERRCODE sqlbaseRecNo( SQLBASEAREAP pArea, HB_ULONG * ulRecNo )
{
*ulRecNo = pArea->ulRecNo;
return HB_SUCCESS;
}
static HB_ERRCODE sqlbaseRecId( SQLBASEAREAP pArea, PHB_ITEM pRecNo )
{
HB_ERRCODE errCode;
HB_ULONG ulRecNo;
errCode = SELF_RECNO( ( AREAP ) pArea, &ulRecNo );
hb_itemPutNInt( pRecNo, ulRecNo );
return errCode;
}
static HB_ERRCODE sqlbaseClose( SQLBASEAREAP pArea )
{
if( SELF_GOCOLD( ( AREAP ) pArea ) == HB_FAILURE )
return HB_FAILURE;
if( SUPER_CLOSE( ( AREAP ) pArea ) == HB_FAILURE )
return HB_FAILURE;
if( pArea->pSDD )
pArea->pSDD->Close( pArea );
if( pArea->pRow )
{
HB_ULONG ulIndex;
for( ulIndex = 0; ulIndex <= pArea->ulRecCount; ulIndex++ )
{
if( pArea->pRowFlags[ ulIndex ] & SQLDD_FLAG_CACHED )
hb_itemRelease( ( PHB_ITEM ) pArea->pRow[ ulIndex ] );
}
hb_xfree( pArea->pRow );
hb_xfree( pArea->pRowFlags );
pArea->pRow = NULL;
pArea->pRowFlags = NULL;
}
if( pArea->szQuery )
{
hb_xfree( pArea->szQuery );
pArea->szQuery = NULL;
}
if( pArea->pConnection )
{
/* It is possible to have areas without connection and SDD driver. Ex., arrayrdd. [Mindaugas] */
pArea->pConnection->uiAreaCount--;
pArea->pConnection = NULL;
}
return HB_SUCCESS;
}
static HB_ERRCODE sqlbaseCreate( SQLBASEAREAP pArea, LPDBOPENINFO pOpenInfo )
{
PHB_ITEM pItemEof, pItem;
HB_USHORT uiCount;
HB_BOOL bError;
pArea->ulConnection = pOpenInfo->ulConnection ? pOpenInfo->ulConnection : s_ulConnectionCurrent;
if( pArea->ulConnection > s_ulConnectionCount ||
( pArea->ulConnection && ! s_pConnection[ pArea->ulConnection - 1 ] ) )
{
hb_errRT_SQLBASE( EG_OPEN, ESQLDD_NOTCONNECTED, "Not connected", NULL );
return HB_FAILURE;
}
if( pArea->ulConnection )
{
pArea->pConnection = s_pConnection[ pArea->ulConnection - 1 ];
pArea->pConnection->uiAreaCount++;
pArea->pSDD = pArea->pConnection->pSDD;
}
else
pArea->pSDD = &sddNull;
pItemEof = hb_itemArrayNew( pArea->area.uiFieldCount );
bError = HB_FALSE;
for( uiCount = 0; uiCount < pArea->area.uiFieldCount; uiCount++ )
{
LPFIELD pField = pArea->area.lpFields + uiCount;
switch( pField->uiType )
{
case HB_FT_STRING:
{
char * pStr;
pStr = ( char * ) hb_xgrab( pField->uiLen + 1 );
memset( pStr, ' ', pField->uiLen );
pStr[ pField->uiLen ] = '\0';
pItem = hb_itemPutCL( NULL, pStr, pField->uiLen );
hb_xfree( pStr );
break;
}
case HB_FT_MEMO:
pItem = hb_itemPutC( NULL, NULL );
break;
case HB_FT_INTEGER:
if( pField->uiDec )
pItem = hb_itemPutND( NULL, 0.0 );
else
pItem = hb_itemPutNI( NULL, 0 );
break;
case HB_FT_LONG:
if( pField->uiDec )
pItem = hb_itemPutND( NULL, 0.0 );
else
pItem = hb_itemPutNL( NULL, 0 );
break;
case HB_FT_FLOAT:
pItem = hb_itemPutND( NULL, 0.0 );
break;
case HB_FT_DOUBLE:
pItem = hb_itemPutND( NULL, 0.0 );
break;
case HB_FT_DATE:
pItem = hb_itemPutDS( NULL, NULL );
break;
case HB_FT_LOGICAL:
pItem = hb_itemPutL( NULL, HB_FALSE );
break;
default:
pItem = hb_itemNew( NULL );
bError = HB_TRUE;
break;
}
hb_arraySetForward( pItemEof, uiCount + 1, pItem );
hb_itemRelease( pItem );
if( bError )
break;
}
if( bError )
{
hb_itemClear( pItemEof );
hb_itemRelease( pItemEof );
hb_errRT_SQLBASE( EG_CORRUPTION, ESQLDD_INVALIDFIELD, "Invalid field type", NULL );
SELF_CLOSE( ( AREAP ) pArea );
return HB_FAILURE;
}
pArea->ulRecCount = 0;
pArea->pRow = ( void ** ) hb_xalloc( SQLDD_ROWSET_RESIZE * sizeof( void * ) );
pArea->pRowFlags = ( HB_BYTE * ) hb_xalloc( SQLDD_ROWSET_RESIZE * sizeof( HB_BYTE ) );
pArea->ulRecMax = SQLDD_ROWSET_RESIZE;
*( pArea->pRow ) = pItemEof;
pArea->pRowFlags[ 0 ] = SQLDD_FLAG_CACHED;
pArea->fFetched = HB_TRUE;
if( SUPER_CREATE( ( AREAP ) pArea, pOpenInfo ) != HB_SUCCESS )
{
SELF_CLOSE( ( AREAP ) pArea );
return HB_FAILURE;
}
return SELF_GOTOP( ( AREAP ) pArea );
}
static HB_ERRCODE sqlbaseInfo( SQLBASEAREAP pArea, HB_USHORT uiIndex, PHB_ITEM pItem )
{
switch( uiIndex )
{
case DBI_QUERY:
hb_itemPutC( pItem, pArea->szQuery );
break;
default:
return SUPER_INFO( ( AREAP ) pArea, uiIndex, pItem );
}
return HB_SUCCESS;
}
static HB_ERRCODE sqlbaseOpen( SQLBASEAREAP pArea, LPDBOPENINFO pOpenInfo )
{
HB_ERRCODE errCode;
pArea->ulConnection = pOpenInfo->ulConnection ? pOpenInfo->ulConnection : s_ulConnectionCurrent;
if( pArea->ulConnection == 0 || pArea->ulConnection > s_ulConnectionCount ||
! s_pConnection[ pArea->ulConnection - 1 ] )
{
hb_errRT_SQLBASE( EG_OPEN, ESQLDD_NOTCONNECTED, "Not connected", NULL );
return HB_FAILURE;
}
if( pArea->area.uiFieldCount )
/* This should not happen (in __dbTrans()), because RDD is registered with RDT_FULL */
return HB_FAILURE;
pArea->pConnection = s_pConnection[ pArea->ulConnection - 1 ];
pArea->pConnection->uiAreaCount++;
pArea->pSDD = pArea->pConnection->pSDD;
/* filename is a query */
pArea->szQuery = hb_strdup( pOpenInfo->abName );
errCode = pArea->pSDD->Open( pArea );
if( errCode == HB_SUCCESS )
errCode = SUPER_OPEN( ( AREAP ) pArea, pOpenInfo );
if( errCode != HB_SUCCESS )
{
SELF_CLOSE( ( AREAP ) pArea );
return HB_FAILURE;
}
return SELF_GOTOP( ( AREAP ) pArea );
}
static HB_ERRCODE sqlbaseStructSize( SQLBASEAREAP pArea, HB_USHORT * uiSize )
{
HB_SYMBOL_UNUSED( pArea );
*uiSize = sizeof( SQLBASEAREA );
return HB_SUCCESS;
}
#if 0
static HB_ERRCODE sqlbaseChildEnd( SQLBASEAREAP pArea, LPDBRELINFO pRelInfo )
{
HB_ERRCODE errCode;
if( pArea->lpdbPendingRel == pRelInfo )
errCode = SELF_FORCEREL( ( AREAP ) pArea );
else
errCode = HB_SUCCESS;
SUPER_CHILDEND( ( AREAP ) pArea, pRelInfo );
return errCode;
}
static HB_ERRCODE sqlbaseChildStart( SQLBASEAREAP pArea, LPDBRELINFO pRelInfo )
{
if( SELF_CHILDSYNC( ( AREAP ) pArea, pRelInfo ) != HB_SUCCESS )
return HB_FAILURE;
return SUPER_CHILDSTART( ( AREAP ) pArea, pRelInfo );
}
static HB_ERRCODE sqlbaseChildSync( SQLBASEAREAP pArea, LPDBRELINFO pRelInfo )
{
if( SELF_GOCOLD( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
pArea->lpdbPendingRel = pRelInfo;
if( pArea->lpdbRelations )
return SELF_SYNCCHILDREN( ( AREAP ) pArea );
return HB_SUCCESS;
}
static HB_ERRCODE sqlbaseForceRel( SQLBASEAREAP pArea )
{
if( pArea->lpdbPendingRel )
{
LPDBRELINFO lpdbPendingRel;
lpdbPendingRel = pArea->lpdbPendingRel;
pArea->lpdbPendingRel = NULL;
return SELF_RELEVAL( ( AREAP ) pArea, lpdbPendingRel );
}
return HB_SUCCESS;
}
static HB_ERRCODE sqlbaseSetFilter( SQLBASEAREAP pArea, LPDBFILTERINFO pFilterInfo )
{
if( pArea->lpdbPendingRel )
{
if( SELF_FORCEREL( ( AREAP ) pArea ) != HB_SUCCESS )
return HB_FAILURE;
}
return SUPER_SETFILTER( ( AREAP ) pArea, pFilterInfo );
}
#endif
static HB_ERRCODE sqlbaseInit( LPRDDNODE pRDD )
{
HB_SYMBOL_UNUSED( pRDD );
s_pItemNewID = hb_itemNew( NULL );
return HB_SUCCESS;
}
static HB_ERRCODE sqlbaseExit( LPRDDNODE pRDD )
{
HB_ULONG ul;
HB_SYMBOL_UNUSED( pRDD );
if( s_pConnection )
{
/* Disconnect all connections */
for( ul = 0; ul < s_ulConnectionCount; ul++ )
{
if( s_pConnection[ ul ] )
{
s_pConnection[ ul ]->pSDD->Disconnect( s_pConnection[ ul ] );
hb_xfree( s_pConnection[ ul ] );
}
}
hb_xfree( s_pConnection );
s_pConnection = NULL;
s_ulConnectionCount = 0;
s_ulConnectionCurrent = 0;
if( s_szError )
{
hb_xfree( s_szError );
s_szError = NULL;
}
if( s_szQuery )
{
hb_xfree( s_szQuery );
s_szQuery = NULL;
}
hb_itemRelease( s_pItemNewID );
s_pItemNewID = NULL;
}
return HB_SUCCESS;
}
static HB_ERRCODE sqlbaseRddInfo( LPRDDNODE pRDD, HB_USHORT uiIndex, HB_ULONG ulConnect, PHB_ITEM pItem )
{
HB_ULONG ulConn;
SQLDDCONNECTION * pConn;
HB_SYMBOL_UNUSED( pRDD );
ulConn = ulConnect ? ulConnect : s_ulConnectionCurrent;
if( ulConn > 0 && ulConn <= s_ulConnectionCount )
pConn = s_pConnection[ ulConn - 1 ];
else
pConn = NULL;
switch( uiIndex )
{
case RDDI_REMOTE:
hb_itemPutL( pItem, HB_TRUE );
break;
case RDDI_CONNECTION:
{
HB_ULONG ulNewConnection = 0;
if( hb_itemType( pItem ) & HB_IT_NUMERIC )
ulNewConnection = hb_itemGetNL( pItem );
hb_itemPutNL( pItem, ulConnect ? ulConnect : s_ulConnectionCurrent );
if( ulNewConnection )
s_ulConnectionCurrent = ulNewConnection;
break;
}
case RDDI_ISDBF:
hb_itemPutL( pItem, HB_FALSE );
break;
case RDDI_CANPUTREC:
hb_itemPutL( pItem, HB_TRUE );
break;
case RDDI_CONNECT:
{
PSDDNODE pNode = NULL;
HB_ULONG ul;
const char * pStr;
pStr = hb_arrayGetCPtr( pItem, 1 );
if( pStr )
{
pNode = s_pSdd;
while( pNode )
{
if( ! hb_stricmp( pNode->Name, pStr ) )
break;
pNode = pNode->pNext;
}
}
hb_rddsqlSetError( 0, NULL, NULL, NULL, 0 );
pConn = ( SQLDDCONNECTION * ) hb_xgrab( sizeof( SQLDDCONNECTION ) );
memset( pConn, 0, sizeof( SQLDDCONNECTION ) );
if( pNode && pNode->Connect( pConn, pItem ) == HB_SUCCESS )
{
pConn->pSDD = pNode;
/* Find free connection handle */
for( ul = 0; ul < s_ulConnectionCount; ul++ )
{
if( ! s_pConnection[ ul ] )
break;
}
if( ul >= s_ulConnectionCount )
{
/* Realloc connection table */
if( s_pConnection )
s_pConnection = ( SQLDDCONNECTION ** ) hb_xrealloc( s_pConnection, sizeof( SQLDDCONNECTION * ) * ( s_ulConnectionCount + CONNECTION_LIST_EXPAND ) );
else
s_pConnection = ( SQLDDCONNECTION ** ) hb_xgrab( sizeof( SQLDDCONNECTION * ) * CONNECTION_LIST_EXPAND );
memset( s_pConnection + s_ulConnectionCount, 0, sizeof( SQLDDCONNECTION * ) * CONNECTION_LIST_EXPAND );
ul = s_ulConnectionCount;
s_ulConnectionCount += CONNECTION_LIST_EXPAND;
}
s_pConnection[ ul ] = pConn;
ul++;
s_ulConnectionCurrent = ul;
}
else
{
hb_xfree( pConn );
ul = 0;
}
hb_itemPutNI( pItem, ul );
break;
}
case RDDI_DISCONNECT:
hb_rddsqlSetError( 0, NULL, NULL, NULL, 0 );
if( pConn && ! pConn->uiAreaCount && pConn->pSDD->Disconnect( pConn ) == HB_SUCCESS )
{
hb_xfree( pConn );
s_pConnection[ ulConn - 1 ] = NULL;
if( s_ulConnectionCurrent == ulConn )
s_ulConnectionCurrent = 0;
hb_itemPutL( pItem, HB_TRUE );
return HB_SUCCESS;
}
hb_itemPutL( pItem, HB_FALSE );
return HB_SUCCESS;
case RDDI_EXECUTE:
hb_rddsqlSetError( 0, NULL, NULL, NULL, 0 );
if( pConn )
hb_itemPutL( pItem, pConn->pSDD->Execute( pConn, pItem ) == HB_SUCCESS );
else
hb_itemPutL( pItem, HB_FALSE );
return HB_SUCCESS;
case RDDI_ERROR:
hb_itemPutC( pItem, s_szError );
return HB_SUCCESS;
case RDDI_ERRORNO:
hb_itemPutNI( pItem, s_errCode );
return HB_SUCCESS;
case RDDI_QUERY:
hb_itemPutC( pItem, s_szQuery );
return HB_SUCCESS;
case RDDI_NEWID:
hb_itemCopy( pItem, s_pItemNewID );
return HB_SUCCESS;
case RDDI_AFFECTEDROWS:
hb_itemPutNInt( pItem, s_ulAffectedRows );
return HB_SUCCESS;
#if 0
default:
return SUPER_RDDINFO( pRDD, uiIndex, ulConnect, pItem );
#endif
}
return HB_SUCCESS;
}
/*====================================================================================*/
static RDDFUNCS sqlbaseTable =
{
( DBENTRYP_BP ) NULL, /* sqlbaseBof */
( DBENTRYP_BP ) NULL, /* sqlbaseEof */
( DBENTRYP_BP ) NULL, /* sqlbaseFound */
( DBENTRYP_V ) sqlbaseGoBottom,
( DBENTRYP_UL ) sqlbaseGoTo,
( DBENTRYP_I ) sqlbaseGoToId,
( DBENTRYP_V ) sqlbaseGoTop,
( DBENTRYP_BIB ) NULL, /* sqlbaseSeek */
( DBENTRYP_L ) sqlbaseSkip,
( DBENTRYP_L ) NULL, /* sqlbaseSkipFilter */
( DBENTRYP_L ) sqlbaseSkipRaw,
( DBENTRYP_VF ) NULL, /* sqlbaseAddField */
( DBENTRYP_B ) sqlbaseAppend,
( DBENTRYP_I ) NULL, /* sqlbaseCreateFields */
( DBENTRYP_V ) sqlbaseDeleteRec,
( DBENTRYP_BP ) sqlbaseDeleted,
( DBENTRYP_SP ) NULL, /* sqlbaseFieldCount */
( DBENTRYP_VF ) NULL, /* sqlbaseFieldDisplay */
( DBENTRYP_SSI ) NULL, /* sqlbaseFieldInfo */
( DBENTRYP_SCP ) NULL, /* sqlbaseFieldName */
( DBENTRYP_V ) NULL, /* sqlbaseFlush */
( DBENTRYP_PP ) NULL, /* sqlbaseGetRec */
( DBENTRYP_SI ) sqlbaseGetValue,
( DBENTRYP_SVL ) sqlbaseGetVarLen,
( DBENTRYP_V ) sqlbaseGoCold,
( DBENTRYP_V ) sqlbaseGoHot,
( DBENTRYP_P ) NULL, /* sqlbasePutRec */
( DBENTRYP_SI ) sqlbasePutValue,
( DBENTRYP_V ) sqlbaseRecall,
( DBENTRYP_ULP ) sqlbaseRecCount,
( DBENTRYP_ISI ) NULL, /* sqlbaseRecInfo */
( DBENTRYP_ULP ) sqlbaseRecNo,
( DBENTRYP_I ) sqlbaseRecId,
( DBENTRYP_S ) NULL, /* sqlbaseSetFieldExtent */
( DBENTRYP_CP ) NULL, /* sqlbaseAlias */
( DBENTRYP_V ) sqlbaseClose,
( DBENTRYP_VO ) sqlbaseCreate,
( DBENTRYP_SI ) sqlbaseInfo,
( DBENTRYP_V ) NULL, /* sqlbaseNewArea */
( DBENTRYP_VO ) sqlbaseOpen,
( DBENTRYP_V ) NULL, /* sqlbaseRelease */
( DBENTRYP_SP ) sqlbaseStructSize,
( DBENTRYP_CP ) NULL, /* sqlbaseSysName */
( DBENTRYP_VEI ) NULL, /* sqlbaseEval */
( DBENTRYP_V ) NULL, /* sqlbasePack */
( DBENTRYP_LSP ) NULL, /* sqlbasePackRec */
( DBENTRYP_VS ) NULL, /* sqlbaseSort */
( DBENTRYP_VT ) NULL, /* sqlbaseTrans */
( DBENTRYP_VT ) NULL, /* sqlbaseTransRec */
( DBENTRYP_V ) NULL, /* sqlbaseZap */
( DBENTRYP_VR ) NULL, /* sqlbaseChildEnd */
( DBENTRYP_VR ) NULL, /* sqlbaseChildStart */
( DBENTRYP_VR ) NULL, /* sqlbaseChildSync */
( DBENTRYP_V ) NULL, /* sqlbaseSyncChildren */
( DBENTRYP_V ) NULL, /* sqlbaseClearRel */
( DBENTRYP_V ) NULL, /* sqlbaseForceRel */
( DBENTRYP_SSP ) NULL, /* sqlbaseRelArea */
( DBENTRYP_VR ) NULL, /* sqlbaseRelEval */
( DBENTRYP_SI ) NULL, /* sqlbaseRelText */
( DBENTRYP_VR ) NULL, /* sqlbaseSetRel */
( DBENTRYP_VOI ) NULL, /* sqlbaseOrderListAdd */
( DBENTRYP_V ) NULL, /* sqlbaseOrderListClear */
( DBENTRYP_VOI ) NULL, /* sqlbaseOrderListDelete */
( DBENTRYP_VOI ) NULL, /* sqlbaseOrderListFocus */
( DBENTRYP_V ) NULL, /* sqlbaseOrderListRebuild */
( DBENTRYP_VOO ) NULL, /* sqlbaseOrderCondition */
( DBENTRYP_VOC ) NULL, /* sqlbaseOrderCreate */
( DBENTRYP_VOI ) NULL, /* sqlbaseOrderDestroy */
( DBENTRYP_SVOI ) NULL, /* sqlbaseOrderInfo */
( DBENTRYP_V ) NULL, /* sqlbaseClearFilter */
( DBENTRYP_V ) NULL, /* sqlbaseClearLocate */
( DBENTRYP_V ) NULL, /* sqlbaseClearScope */
( DBENTRYP_VPLP ) NULL, /* sqlbaseCountScope */
( DBENTRYP_I ) NULL, /* sqlbaseFilterText */
( DBENTRYP_SI ) NULL, /* sqlbaseScopeInfo */
( DBENTRYP_VFI ) NULL, /* sqlbaseSetFilter */
( DBENTRYP_VLO ) NULL, /* sqlbaseSetLocate */
( DBENTRYP_VOS ) NULL, /* sqlbaseSetScope */
( DBENTRYP_VPL ) NULL, /* sqlbaseSkipScope */
( DBENTRYP_B ) NULL, /* sqlbaseLocate */
( DBENTRYP_CC ) NULL, /* sqlbaseCompile */
( DBENTRYP_I ) NULL, /* sqlbaseError */
( DBENTRYP_I ) NULL, /* sqlbaseEvalBlock */
( DBENTRYP_VSP ) NULL, /* sqlbaseRawLock */
( DBENTRYP_VL ) NULL, /* sqlbaseLock */
( DBENTRYP_I ) NULL, /* sqlbaseUnLock */
( DBENTRYP_V ) NULL, /* sqlbaseCloseMemFile */
( DBENTRYP_VO ) NULL, /* sqlbaseCreateMemFile */
( DBENTRYP_SCCS ) NULL, /* sqlbaseGetValueFile */
( DBENTRYP_VO ) NULL, /* sqlbaseOpenMemFile */
( DBENTRYP_SCCS ) NULL, /* sqlbasePutValueFile */
( DBENTRYP_V ) NULL, /* sqlbaseReadDBHeader */
( DBENTRYP_V ) NULL, /* sqlbaseWriteDBHeader */
( DBENTRYP_R ) sqlbaseInit,
( DBENTRYP_R ) sqlbaseExit,
( DBENTRYP_RVVL ) NULL, /* sqlbaseDrop */
( DBENTRYP_RVVL ) NULL, /* sqlbaseExists */
( DBENTRYP_RVVVL ) NULL, /* sqlbaseRename */
( DBENTRYP_RSLV ) sqlbaseRddInfo,
( DBENTRYP_SVP ) NULL /* sqlbaseWhoCares */
};
/*================ Module initialization code ========================================*/
HB_FUNC( SQLBASE )
{
}
HB_FUNC_STATIC( SQLBASE_GETFUNCTABLE )
{
RDDFUNCS * pTable;
HB_USHORT * puiCount, uiRddId;
puiCount = ( HB_USHORT * ) hb_parptr( 1 );
pTable = ( RDDFUNCS * ) hb_parptr( 2 );
uiRddId = ( HB_USHORT ) hb_parni( 4 );
if( pTable )
{
HB_ERRCODE errCode;
if( puiCount )
*puiCount = RDDFUNCSCOUNT;
errCode = hb_rddInheritEx( pTable, &sqlbaseTable, &sqlbaseSuper, NULL, NULL );
if( errCode == HB_SUCCESS )
s_rddidSQLBASE = uiRddId;
hb_retni( errCode );
}
else
hb_retni( HB_FAILURE );
}
static void hb_sqlbaseInit( void * cargo )
{
HB_SYMBOL_UNUSED( cargo );
if( hb_rddRegister( "SQLBASE", RDT_FULL ) > 1 )
hb_errInternal( HB_EI_RDDINVALID, NULL, NULL, NULL );
}
HB_INIT_SYMBOLS_BEGIN( sqlbase__InitSymbols )
{
"SQLBASE", { HB_FS_PUBLIC }, { HB_FUNCNAME( SQLBASE ) }, NULL
},
{ "SQLBASE_GETFUNCTABLE", { HB_FS_PUBLIC }, { HB_FUNCNAME( SQLBASE_GETFUNCTABLE ) }, NULL }
HB_INIT_SYMBOLS_END( sqlbase__InitSymbols )
HB_CALL_ON_STARTUP_BEGIN( _hb_sqlbase_init_ )
hb_vmAtInit( hb_sqlbaseInit, NULL );
HB_CALL_ON_STARTUP_END( _hb_sqlbase_init_ )
#if defined( HB_PRAGMA_STARTUP )
#pragma startup sqlbase__InitSymbols
#pragma startup _hb_sqlbase_init_
#elif defined( HB_DATASEG_STARTUP )
#define HB_DATASEG_BODY HB_DATASEG_FUNC( sqlbase__InitSymbols ) \
HB_DATASEG_FUNC( _hb_sqlbase_init_ )
#include "hbiniseg.h"
#endif