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SF [2047672] RecordSet Filtering

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This commit is contained in:
Aleksandar Fabijanic
2008-08-12 10:12:56 +00:00
parent d6b81dca0f
commit e409026fba
23 changed files with 986 additions and 86 deletions
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54
Data/src/RowIterator.cpp
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@@ -50,7 +50,7 @@ const int RowIterator::POSITION_END = std::numeric_limits<std::size_t>::max();
RowIterator::RowIterator(RecordSet* pRecordSet, bool positionEnd):
_pRecordSet(pRecordSet),
_position((0 == pRecordSet->rowCount()) || positionEnd ? POSITION_END : 0)
_position((0 == pRecordSet->totalRowCount()) || positionEnd ? POSITION_END : 0)
{
}
@@ -89,10 +89,19 @@ void RowIterator::increment() const
if (POSITION_END == _position)
throw RangeException("End of iterator reached.");
if (_position < _pRecordSet->rowCount() - 1)
if (_position < _pRecordSet->totalRowCount() - 1)
++_position;
else
_position = POSITION_END;
if (_pRecordSet->getFilter() && POSITION_END != _position)
{
while (!_pRecordSet->isAllowed(_position))
{
increment();
if (POSITION_END == _position) break;
}
}
}
@@ -101,17 +110,52 @@ void RowIterator::decrement() const
if (0 == _position)
throw RangeException("Beginning of iterator reached.");
else if (POSITION_END == _position)
_position = _pRecordSet->rowCount() - 1;
_position = _pRecordSet->totalRowCount() - 1;
else
--_position;
if (_pRecordSet->getFilter() && 0 != _position)
{
while (!_pRecordSet->isAllowed(_position))
{
decrement();
if (0 == _position) break;
}
}
}
void RowIterator::setPosition(std::size_t pos) const
{
if (pos < _pRecordSet->rowCount())
if (_position == pos) return;
if (_pRecordSet->getFilter())
{
std::size_t start = _position;
if (_position > pos)
{
std::size_t end = _position - pos;
for (; start > end; --start)
{
if (pos) --pos;
else throw RangeException("Invalid position argument.");
}
}
else
{
std::size_t end = pos - _position;
for (; start < end; ++start)
{
if (_pRecordSet->totalRowCount() != pos) ++pos;
else throw RangeException("Invalid position argument.");
}
}
}
if (pos < _pRecordSet->totalRowCount())
_position = pos;
else if (pos == _pRecordSet->rowCount())
else if (pos == _pRecordSet->totalRowCount())
_position = POSITION_END;
else
throw RangeException("Invalid position argument.");