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//
// RecordSet.cpp
//
// Library: Data
// Package: DataCore
// Module: RecordSet
//
// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/SQL/RecordSet.h"
#include "Poco/SQL/Date.h"
#include "Poco/SQL/Time.h"
#include "Poco/SQL/SQLException.h"
#include "Poco/DateTime.h"
#include "Poco/UTFString.h"
using namespace Poco::SQL::Keywords;
using Poco::DateTime;
using Poco::UTF16String;
namespace Poco {
namespace SQL {
RecordSet::RecordSet(const Statement& rStatement,
RowFormatter::Ptr pRowFormatter):
Statement(rStatement),
_currentRow(0),
_pBegin(new RowIterator(this, 0 == rowsExtracted())),
_pEnd(new RowIterator(this, true))
{
if (pRowFormatter) setRowFormatter(pRowFormatter);
}
RecordSet::RecordSet(Session& rSession,
const std::string& query,
RowFormatter::Ptr pRowFormatter):
Statement((rSession << query, now)),
_currentRow(0),
_pBegin(new RowIterator(this, 0 == rowsExtracted())),
_pEnd(new RowIterator(this, true))
{
if (pRowFormatter) setRowFormatter(pRowFormatter);
}
RecordSet::RecordSet(const RecordSet& other): Statement(other),
_currentRow(other._currentRow),
_pBegin(new RowIterator(this, 0 == rowsExtracted())),
_pEnd(new RowIterator(this, true)),
_pFilter(other._pFilter)
{
}
RecordSet::RecordSet(RecordSet&& other): Statement(std::move(other))
{
_currentRow = other._currentRow; other._currentRow = 0;
_pBegin = other._pBegin; other._pBegin = nullptr;
_pEnd = other._pEnd; other._pEnd = nullptr;
_pFilter = other._pFilter; other._pFilter = nullptr;
_rowMap = std::move(other._rowMap); other._rowMap.clear();
}
RecordSet::~RecordSet()
{
try
{
delete _pBegin;
delete _pEnd;
RowMap::iterator it = _rowMap.begin();
RowMap::iterator itEnd = _rowMap.end();
for (; it != itEnd; ++it) delete it->second;
}
catch (...)
{
poco_unexpected();
}
}
RecordSet& RecordSet::reset(const Statement& stmt)
{
delete _pBegin;
_pBegin = 0;
delete _pEnd;
_pEnd = 0;
_currentRow = 0;
Statement::setTotalRowCount(StatementImpl::UNKNOWN_TOTAL_ROW_COUNT);
RowMap::iterator it = _rowMap.begin();
RowMap::iterator end = _rowMap.end();
for (; it != end; ++it) delete it->second;
_rowMap.clear();
Statement::operator = (stmt);
_pBegin = new RowIterator(this, 0 == rowsExtracted());
_pEnd = new RowIterator(this, true);
return *this;
}
Poco::Dynamic::Var RecordSet::value(std::size_t col, std::size_t dataRow, bool useFilter) const
{
if (useFilter && isFiltered() && !isAllowed(dataRow))
throw InvalidAccessException("Row not allowed");
if (isNull(col, dataRow)) return Poco::Dynamic::Var();
switch (columnType(col))
{
case MetaColumn::FDT_BOOL: return value<bool>(col, dataRow, useFilter);
case MetaColumn::FDT_INT8: return value<Int8>(col, dataRow, useFilter);
case MetaColumn::FDT_UINT8: return value<UInt8>(col, dataRow, useFilter);
case MetaColumn::FDT_INT16: return value<Int16>(col, dataRow, useFilter);
case MetaColumn::FDT_UINT16: return value<UInt16>(col, dataRow, useFilter);
case MetaColumn::FDT_INT32: return value<Int32>(col, dataRow, useFilter);
case MetaColumn::FDT_UINT32: return value<UInt32>(col, dataRow, useFilter);
case MetaColumn::FDT_INT64: return value<Int64>(col, dataRow, useFilter);
case MetaColumn::FDT_UINT64: return value<UInt64>(col, dataRow, useFilter);
case MetaColumn::FDT_FLOAT: return value<float>(col, dataRow, useFilter);
case MetaColumn::FDT_DOUBLE: return value<double>(col, dataRow, useFilter);
case MetaColumn::FDT_STRING: return value<std::string>(col, dataRow, useFilter);
case MetaColumn::FDT_WSTRING: return value<UTF16String>(col, dataRow, useFilter);
case MetaColumn::FDT_BLOB: return value<BLOB>(col, dataRow, useFilter);
case MetaColumn::FDT_CLOB: return value<CLOB>(col, dataRow, useFilter);
case MetaColumn::FDT_DATE: return value<Date>(col, dataRow, useFilter);
case MetaColumn::FDT_TIME: return value<Time>(col, dataRow, useFilter);
case MetaColumn::FDT_TIMESTAMP: return value<DateTime>(col, dataRow);
default:
throw UnknownTypeException("Data type not supported.");
}
}
Poco::Dynamic::Var RecordSet::value(const std::string& name, std::size_t dataRow, bool useFilter) const
{
if (useFilter && isFiltered() && !isAllowed(dataRow))
throw InvalidAccessException("Row not allowed");
if (isNull(metaColumn(name).position(), dataRow)) return Poco::Dynamic::Var();
switch (columnType(name))
{
case MetaColumn::FDT_BOOL: return value<bool>(name, dataRow, useFilter);
case MetaColumn::FDT_INT8: return value<Int8>(name, dataRow, useFilter);
case MetaColumn::FDT_UINT8: return value<UInt8>(name, dataRow, useFilter);
case MetaColumn::FDT_INT16: return value<Int16>(name, dataRow, useFilter);
case MetaColumn::FDT_UINT16: return value<UInt16>(name, dataRow, useFilter);
case MetaColumn::FDT_INT32: return value<Int32>(name, dataRow, useFilter);
case MetaColumn::FDT_UINT32: return value<UInt32>(name, dataRow, useFilter);
case MetaColumn::FDT_INT64: return value<Int64>(name, dataRow, useFilter);
case MetaColumn::FDT_UINT64: return value<UInt64>(name, dataRow, useFilter);
case MetaColumn::FDT_FLOAT: return value<float>(name, dataRow, useFilter);
case MetaColumn::FDT_DOUBLE: return value<double>(name, dataRow, useFilter);
case MetaColumn::FDT_STRING: return value<std::string>(name, dataRow, useFilter);
case MetaColumn::FDT_WSTRING: return value<UTF16String>(name, dataRow, useFilter);
case MetaColumn::FDT_BLOB: return value<BLOB>(name, dataRow, useFilter);
case MetaColumn::FDT_DATE: return value<Date>(name, dataRow, useFilter);
case MetaColumn::FDT_TIME: return value<Time>(name, dataRow, useFilter);
case MetaColumn::FDT_TIMESTAMP: return value<DateTime>(name, dataRow, useFilter);
default:
throw UnknownTypeException("Data type not supported.");
}
}
Row& RecordSet::row(std::size_t pos)
{
std::size_t rowCnt = rowCount();
if (0 == rowCnt || pos > rowCnt - 1)
throw RangeException("Invalid recordset row requested.");
RowMap::const_iterator it = _rowMap.find(pos);
Row* pRow = 0;
std::size_t columns = columnCount();
if (it == _rowMap.end())
{
if (_rowMap.size())
{
//reuse first row column names and sorting fields to save some memory
pRow = new Row(_rowMap.begin()->second->names(),
_rowMap.begin()->second->getSortMap(),
getRowFormatter());
for (std::size_t col = 0; col < columns; ++col)
pRow->set(col, value(col, pos));
}
else
{
pRow = new Row;
pRow->setFormatter(getRowFormatter());
for (std::size_t col = 0; col < columns; ++col)
pRow->append(metaColumn(static_cast<UInt32>(col)).name(), value(col, pos));
}
_rowMap.insert(RowMap::value_type(pos, pRow));
}
else
{
pRow = it->second;
poco_check_ptr (pRow);
}
return *pRow;
}
std::size_t RecordSet::rowCount() const
{
if (0 == extractions().size() && 0 == columnsExtracted())
return 0;
poco_assert (extractions().size());
std::size_t rc = storageRowCount();
if (!isFiltered()) return rc;
std::size_t counter = 0;
for (int dataRow = 0; dataRow < rc; ++dataRow)
{
if (isAllowed(dataRow)) ++counter;
}
return counter;
}
bool RecordSet::isAllowed(std::size_t dataRow) const
{
if (!isFiltered()) return true;
return _pFilter->isAllowed(dataRow);
}
bool RecordSet::moveFirst()
{
const size_t rc = storageRowCount();
if (rc > 0)
{
if (!isFiltered())
{
_currentRow = 0;
return true;
}
std::size_t currentRow = 0;
while (!isAllowed(currentRow))
{
if (currentRow >= rc - 1) return false;
++currentRow;
}
_currentRow = currentRow;
return true;
}
else return false;
}
bool RecordSet::moveNext()
{
std::size_t currentRow = _currentRow;
do
{
if (currentRow >= storageRowCount() -1) return false;
++currentRow;
} while (isFiltered() && !isAllowed(currentRow));
_currentRow = currentRow;
return true;
}
bool RecordSet::movePrevious()
{
std::size_t currentRow = _currentRow;
do
{
if (currentRow <= 0) return false;
--currentRow;
} while (isFiltered() && !isAllowed(currentRow));
_currentRow = currentRow;
return true;
}
bool RecordSet::moveLast()
{
if (storageRowCount() > 0)
{
std::size_t currentRow = subTotalRowCount() - 1;
if (!isFiltered())
{
_currentRow = currentRow;
return true;
}
while (!isAllowed(currentRow))
{
if (currentRow <= 0) return false;
--currentRow;
}
_currentRow = currentRow;
return true;
}
else return false;
}
void RecordSet::setRowFormatter(RowFormatter::Ptr pRowFormatter)
{
if (pRowFormatter)
{
if (pRowFormatter->getTotalRowCount() == RowFormatter::INVALID_ROW_COUNT)
pRowFormatter->setTotalRowCount(static_cast<int>(getTotalRowCount()));
Statement::setRowFormatter(pRowFormatter);
RowMap::iterator it = _rowMap.begin();
RowMap::iterator itEnd = _rowMap.end();
for (; it != itEnd; ++it) it->second->setFormatter(getRowFormatter());
}
else
throw NullPointerException("Null RowFormatter in RecordSet.");
}
std::ostream& RecordSet::copyNames(std::ostream& os) const
{
if (begin() == end()) return os;
std::string names = (*_pBegin)->namesToString();
if (!names.empty()) os << names;
return os;
}
std::ostream& RecordSet::copyValues(std::ostream& os, std::size_t offset, std::size_t length) const
{
if (begin() == end()) return os;
RowIterator it = *_pBegin + offset;
RowIterator itEnd = (RowIterator::POSITION_END != length) ? it + length : *_pEnd;
std::copy(it, itEnd, std::ostream_iterator<Row>(os));
return os;
}
void RecordSet::formatValues(std::size_t offset, std::size_t length) const
{
if (begin() == end()) return;
RowIterator it = *_pBegin + offset;
RowIterator itEnd = (RowIterator::POSITION_END != length) ? it + length : *_pEnd;
std::string val;
for (; it != itEnd; ++it) it->formatValues();
}
std::ostream& RecordSet::copy(std::ostream& os, std::size_t offset, std::size_t length) const
{
if (begin() == end()) return os;
RowFormatter& rf = const_cast<RowFormatter&>((*_pBegin)->getFormatter());
rf.setTotalRowCount(static_cast<int>(getTotalRowCount()));
if (RowFormatter::FORMAT_PROGRESSIVE == rf.getMode())
{
os << rf.prefix();
copyNames(os);
copyValues(os, offset, length);
os << rf.postfix();
}
else
{
formatNames();
formatValues(offset, length);
os << rf.toString();
}
return os;
}
void RecordSet::filter(const Poco::AutoPtr<RowFilter>& pFilter)
{
_pFilter = pFilter;
}
bool RecordSet::isFiltered() const
{
return _pFilter && !_pFilter->isEmpty();
}
} } // namespace Poco::SQL
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