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read one row forward because of isLast

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This commit is contained in:
Ocke Janssen 2000-11-07 12:19:27 +00:00
parent 46983e2ca0
commit 1b12a888fd
1 changed files with 49 additions and 8 deletions
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57
dbaccess/source/core/api/RowSetCache.cxx
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@ -2,9 +2,9 @@
*
* $RCSfile: RowSetCache.cxx,v $
*
* $Revision: 1.8 $
* $Revision: 1.9 $
*
* last change: $Author: oj $ $Date: 2000-11-03 14:40:45 $
* last change: $Author: oj $ $Date: 2000-11-07 13:19:27 $
*
* The Contents of this file are made available subject to the terms of
* either of the following licenses
@ -739,7 +739,15 @@ void SAL_CALL ORowSetCache::updateNumericObject( sal_Int32 columnIndex, const An
// (*(*m_aMatrixIter))[columnIndex] = x;
}
// -------------------------------------------------------------------------
//void ORowSetCache::readForward()
//{
// // we have to read one row before to enshure that we know when we are on last row
// ++m_nPosition;
// moveWindow();
// --m_nPosition;
// moveWindow();
//}
// -----------------------------------------------------------------------------
// XResultSet
sal_Bool SAL_CALL ORowSetCache::next( ) throw(SQLException, RuntimeException)
{
@ -752,6 +760,8 @@ sal_Bool SAL_CALL ORowSetCache::next( ) throw(SQLException, RuntimeException)
++m_nPosition;
moveWindow();
// readForward();
m_aMatrixIter = m_pMatrix->begin() + m_nPosition - m_nStartPos -1; // -1 because rows start at zero
if(!m_bNew)
m_aInsertRow = m_aMatrixIter;
@ -830,8 +840,9 @@ void SAL_CALL ORowSetCache::afterLast( ) throw(SQLException, RuntimeException)
// -------------------------------------------------------------------------
sal_Bool ORowSetCache::fillMatrix(sal_Int32 _nNewStartPos,sal_Int32 _nNewEndPos)
{
// fill the whole window with new data
ORowSetMatrix::iterator aIter = m_pMatrix->begin();
sal_Bool bCheck = m_pCacheSet->absolute(_nNewStartPos); // -1
sal_Bool bCheck = m_pCacheSet->absolute(_nNewStartPos); // -1 no need to
for(sal_Int32 i=_nNewStartPos;i<_nNewEndPos;++i,++aIter)
{
if(bCheck)
@ -865,10 +876,20 @@ sal_Bool ORowSetCache::fillMatrix(sal_Int32 _nNewStartPos,sal_Int32 _nNewEndPos)
::std::rotate(m_pMatrix->begin(),aEnd,m_pMatrix->end());
break;
}
// *aIter = NULL;
bCheck = m_pCacheSet->next();
}
m_nStartPos = _nNewStartPos;
// we have to read one row forward to enshure that we know when we are on last row
// but only when we don't know it already
if(!m_bRowCountFinal)
{
if(!m_pCacheSet->next())
{
if(m_pCacheSet->previous()) // because we stand after the last row
m_nRowCount = m_pCacheSet->getRow(); // here we have the row count
m_bRowCountFinal = sal_True;
}
}
return bCheck;
}
// -------------------------------------------------------------------------
@ -954,19 +975,24 @@ sal_Bool ORowSetCache::moveWindow()
}
}
else if(m_nPosition > m_nStartPos)
{ // the new start pos is above the the window start pos
{ // the new start pos is above the startpos of the window
if(m_nPosition <= (m_nStartPos+m_nFetchSize))
{ // position in window
m_aMatrixIter = m_pMatrix->begin() + m_nPosition - m_nStartPos -1;
if(!m_aMatrixIter->isValid())
{
if(m_pCacheSet->absolute(m_nPosition))
sal_Bool bOk;
if(bOk = m_pCacheSet->absolute(m_nPosition))
{
*m_aMatrixIter = new connectivity::ORowVector< ORowSetValue >(m_xMetaData->getColumnCount());
m_pCacheSet->fillValueRow(*m_aMatrixIter);
// we have to read one row forward to enshure that we know when we are on last row
// but only when we don't know it already
if(!m_bRowCountFinal)
bOk = m_pCacheSet->absolute(m_nPosition+1);
}
else
if(!bOk)
{
if(!m_bRowCountFinal)
{
@ -995,11 +1021,23 @@ sal_Bool ORowSetCache::moveWindow()
m_pCacheSet->fillValueRow(*aIter++);
}
}
// we have to read one row forward to enshure that we know when we are on last row
// but only when we don't know it already
sal_Bool bOk = sal_True;
if(bCheck && !m_bRowCountFinal)
bOk = m_pCacheSet->next();
// bind end to front
if(bCheck)
{ // rotate the end to the front
::std::rotate(m_pMatrix->begin(),aIter,m_pMatrix->end());
m_nStartPos = nNewStartPos - 1; // must be -1
// now I can say how many rows we have
if(!bOk)
{
m_pCacheSet->previous(); // because we stand after the last row
m_nRowCount = m_pCacheSet->getRow() ; // here we have the row count
m_bRowCountFinal = sal_True;
}
}
else
{ // the end was reached before end() so we can set the start before nNewStartPos
@ -1427,6 +1465,9 @@ void SAL_CALL ORowSetCache::clearWarnings( ) throw(SQLException, RuntimeExcepti
/*------------------------------------------------------------------------
$Log: not supported by cvs2svn $
Revision 1.8 2000/11/03 14:40:45 oj
some problems with refcount resolved
Revision 1.7 2000/10/25 07:30:24 oj
make strings unique for lib's