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2015-02-17 16:35 UTC+0100 Przemyslaw Czerpak (druzus/at/poczta.onet.pl)

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* src/rdd/dbf1.c
    + added support for autoincrement fields with counter longer then 4 bytes
      Warning: if someone created tables with such fields i.e. { "I:+", 8, 0 }
               after my modification which added support for AutoInc flags in
               all numeric DBF fields then he should update counters manually
               using DBS_COUNTER flag. New code uses 64bit counters for such
               field located in different part of DBFFIELD structure.
This commit is contained in:
Przemysław Czerpak
2015-02-17 16:35:17 +01:00
parent 9ed0347914
commit 9347e5ab4e
2 changed files with 66 additions and 25 deletions
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82
src/rdd/dbf1.c
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@@ -82,6 +82,9 @@ static RDDFUNCS dbfSuper;
#define HB_BLANK_AUTOINC 101
#define HB_BLANK_UNISPACE 102
#define HB_AUTOINC_NONE 0
#define HB_AUTOINC_STD 1
#define HB_AUTOINC_LONG 2
/*
* generate Run-Time error
@@ -167,26 +170,38 @@ static void hb_dbfRowVerSet( DBFAREAP pArea, HB_USHORT uiField, HB_MAXINT nValue
static HB_BOOL hb_dbfIsAutoIncField( LPFIELD pField )
{
switch( pField->uiType )
if( pField->uiType == HB_FT_AUTOINC )
return pField->uiLen - pField->uiDec > 4 ?
HB_AUTOINC_LONG : HB_AUTOINC_STD;
else if( ( pField->uiFlags & HB_FF_AUTOINC ) != 0 )
{
case HB_FT_INTEGER:
case HB_FT_DOUBLE:
case HB_FT_LONG:
case HB_FT_FLOAT:
return ( pField->uiFlags & HB_FF_AUTOINC ) != 0;
case HB_FT_AUTOINC:
return HB_TRUE;
switch( pField->uiType )
{
case HB_FT_DOUBLE:
return HB_AUTOINC_LONG;
case HB_FT_LONG:
case HB_FT_FLOAT:
return pField->uiLen - ( pField->uiDec ? pField->uiDec + 1 : 0 ) > 9 ?
HB_AUTOINC_LONG : HB_AUTOINC_STD;
case HB_FT_INTEGER:
return pField->uiLen - pField->uiDec > 4 ?
HB_AUTOINC_LONG : HB_AUTOINC_STD;
}
}
return HB_FALSE;
return HB_AUTOINC_NONE;
}
static void hb_dbfNextValueInit( LPDBFFIELD pDbField )
static void hb_dbfNextValueInit( LPDBFFIELD pDbField, LPFIELD pField )
{
HB_PUT_LE_UINT32( pDbField->bCounter, 1 );
if( hb_dbfIsAutoIncField( pField ) == HB_AUTOINC_LONG )
HB_PUT_LE_UINT64( pDbField->bReserved2, 1 );
else
HB_PUT_LE_UINT32( pDbField->bCounter, 1 );
pDbField->bStep = 1;
}
static HB_MAXINT hb_dbfNextValueGet( DBFAREAP pArea, HB_USHORT uiField, HB_BOOL fUpdate )
static HB_MAXINT hb_dbfNextValueGet( DBFAREAP pArea, HB_USHORT uiField,
HB_BOOL fUpdate )
{
HB_MAXINT nValue = 0;
DBFFIELD dbField;
@@ -195,10 +210,18 @@ static HB_MAXINT hb_dbfNextValueGet( DBFAREAP pArea, HB_USHORT uiField, HB_BOOL
sizeof( DBFHEADER ) + uiField * sizeof( DBFFIELD ) ) ==
sizeof( dbField ) )
{
nValue = HB_GET_LE_UINT32( dbField.bCounter );
int iType = hb_dbfIsAutoIncField( pArea->area.lpFields + uiField );
if( iType == HB_AUTOINC_LONG )
nValue = HB_GET_LE_UINT64( dbField.bReserved2 );
else
nValue = HB_GET_LE_UINT32( dbField.bCounter );
if( fUpdate )
{
HB_PUT_LE_UINT32( dbField.bCounter, nValue + dbField.bStep );
if( iType == HB_AUTOINC_LONG )
HB_PUT_LE_UINT64( dbField.bReserved2, nValue + dbField.bStep );
else
HB_PUT_LE_UINT32( dbField.bCounter, nValue + dbField.bStep );
hb_fileWriteAt( pArea->pDataFile, &dbField, sizeof( dbField ),
sizeof( DBFHEADER ) + uiField * sizeof( DBFFIELD ) );
}
@@ -207,7 +230,8 @@ static HB_MAXINT hb_dbfNextValueGet( DBFAREAP pArea, HB_USHORT uiField, HB_BOOL
return nValue;
}
static HB_MAXINT hb_dbfNextValueSet( DBFAREAP pArea, HB_USHORT uiField, HB_MAXINT nValue )
static HB_MAXINT hb_dbfNextValueSet( DBFAREAP pArea, HB_USHORT uiField,
HB_MAXINT nValue )
{
DBFFIELD dbField;
HB_MAXINT nPrevValue = 0;
@@ -216,8 +240,16 @@ static HB_MAXINT hb_dbfNextValueSet( DBFAREAP pArea, HB_USHORT uiField, HB_MAXIN
sizeof( DBFHEADER ) + uiField * sizeof( DBFFIELD ) ) ==
sizeof( dbField ) )
{
nPrevValue = HB_GET_LE_UINT32( dbField.bCounter );
HB_PUT_LE_UINT32( dbField.bCounter, nValue );
if( hb_dbfIsAutoIncField( pArea->area.lpFields + uiField ) == HB_AUTOINC_LONG )
{
nPrevValue = HB_GET_LE_UINT64( dbField.bReserved2 );
HB_PUT_LE_UINT64( dbField.bReserved2, nValue );
}
else
{
nPrevValue = HB_GET_LE_UINT32( dbField.bCounter );
HB_PUT_LE_UINT32( dbField.bCounter, nValue );
}
hb_fileWriteAt( pArea->pDataFile, &dbField, sizeof( dbField ),
sizeof( DBFHEADER ) + uiField * sizeof( DBFFIELD ) );
}
@@ -3230,7 +3262,7 @@ static HB_ERRCODE hb_dbfCreate( DBFAREAP pArea, LPDBOPENINFO pCreateInfo )
pThisField->bLen = ( HB_BYTE ) pField->uiLen;
pThisField->bDec = ( HB_BYTE ) pField->uiDec;
if( ( pField->uiFlags & HB_FF_AUTOINC ) != 0 )
hb_dbfNextValueInit( pThisField );
hb_dbfNextValueInit( pThisField, pField );
pArea->uiRecordLen += pField->uiLen;
break;
@@ -3239,7 +3271,7 @@ static HB_ERRCODE hb_dbfCreate( DBFAREAP pArea, LPDBOPENINFO pCreateInfo )
pThisField->bLen = ( HB_BYTE ) pField->uiLen;
pThisField->bDec = ( HB_BYTE ) pField->uiDec;
if( ( pField->uiFlags & HB_FF_AUTOINC ) != 0 )
hb_dbfNextValueInit( pThisField );
hb_dbfNextValueInit( pThisField, pField );
pArea->uiRecordLen += pField->uiLen;
break;
@@ -3250,7 +3282,7 @@ static HB_ERRCODE hb_dbfCreate( DBFAREAP pArea, LPDBOPENINFO pCreateInfo )
pThisField->bLen = ( HB_BYTE ) pField->uiLen;
pThisField->bDec = ( HB_BYTE ) pField->uiDec;
if( ( pField->uiFlags & HB_FF_AUTOINC ) != 0 )
hb_dbfNextValueInit( pThisField );
hb_dbfNextValueInit( pThisField, pField );
pArea->uiRecordLen += pField->uiLen;
break;
@@ -3267,7 +3299,7 @@ static HB_ERRCODE hb_dbfCreate( DBFAREAP pArea, LPDBOPENINFO pCreateInfo )
pThisField->bLen = ( HB_BYTE ) pField->uiLen;
pThisField->bDec = ( HB_BYTE ) pField->uiDec;
if( ( pField->uiFlags & HB_FF_AUTOINC ) != 0 )
hb_dbfNextValueInit( pThisField );
hb_dbfNextValueInit( pThisField, pField );
pArea->uiRecordLen += pField->uiLen;
break;
@@ -3333,7 +3365,7 @@ static HB_ERRCODE hb_dbfCreate( DBFAREAP pArea, LPDBOPENINFO pCreateInfo )
pThisField->bType = '+';
pField->uiLen = 4;
pThisField->bLen = ( HB_BYTE ) pField->uiLen;
hb_dbfNextValueInit( pThisField );
hb_dbfNextValueInit( pThisField, pField );
pArea->uiRecordLen += pField->uiLen;
pArea->fAutoInc = HB_TRUE;
break;
@@ -3741,7 +3773,7 @@ static HB_ERRCODE hb_dbfFieldInfo( DBFAREAP pArea, HB_USHORT uiIndex, HB_USHORT
return HB_SUCCESS;
case DBS_COUNTER:
nValue = 0;
if( hb_dbfIsAutoIncField( pArea->area.lpFields + uiIndex - 1 ) )
if( hb_dbfIsAutoIncField( pArea->area.lpFields + uiIndex - 1 ) != HB_AUTOINC_NONE )
{
fLck = HB_FALSE;
if( pArea->fShared && ! pArea->fFLocked && ! pArea->fHeaderLocked )
@@ -3763,7 +3795,7 @@ static HB_ERRCODE hb_dbfFieldInfo( DBFAREAP pArea, HB_USHORT uiIndex, HB_USHORT
return HB_SUCCESS;
case DBS_STEP:
iValue = 0;
if( hb_dbfIsAutoIncField( pArea->area.lpFields + uiIndex - 1 ) )
if( hb_dbfIsAutoIncField( pArea->area.lpFields + uiIndex - 1 ) != HB_AUTOINC_NONE )
{
if( HB_IS_NUMERIC( pItem ) )
{
@@ -4938,7 +4970,7 @@ static HB_ERRCODE hb_dbfZap( DBFAREAP pArea )
/* reset autoincrement and row version fields */
for( uiField = 0; uiField < pArea->area.uiFieldCount; uiField++ )
{
if( hb_dbfIsAutoIncField( &pArea->area.lpFields[ uiField ] ) )
if( hb_dbfIsAutoIncField( &pArea->area.lpFields[ uiField ] ) != HB_AUTOINC_NONE )
hb_dbfNextValueSet( pArea, uiField, 1 );
else if( pArea->area.lpFields[ uiField ].uiType == HB_FT_ROWVER )
hb_dbfRowVerSet( pArea, uiField, 0 );