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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <TSortIndex.hxx>
#include <algorithm>
#include <iterator>
#include <o3tl/functional.hxx>
using namespace connectivity;
namespace {
/// Functor object for class OSortIndex::TIntValuePairVector::value_type returntype is bool
struct TKeyValueFunc
{
OSortIndex* pIndex;
explicit TKeyValueFunc(OSortIndex* _pIndex) : pIndex(_pIndex)
{
}
// return false if compared values are equal otherwise true
bool operator()(const OSortIndex::TIntValuePairVector::value_type& lhs,const OSortIndex::TIntValuePairVector::value_type& rhs) const
{
const std::vector<OKeyType>& aKeyType = pIndex->getKeyType();
size_t i = 0;
for (auto const& elem : aKeyType)
{
const bool bGreater = pIndex->getAscending(i) != TAscendingOrder::ASC;
const bool bLess = !bGreater;
// compare depending for type
switch (elem)
{
case OKeyType::String:
{
sal_Int32 nRes = lhs.second->getKeyString(i).compareTo(rhs.second->getKeyString(i));
if (nRes < 0)
return bLess;
else if (nRes > 0)
return bGreater;
}
break;
case OKeyType::Double:
{
double d1 = lhs.second->getKeyDouble(i);
double d2 = rhs.second->getKeyDouble(i);
if (d1 < d2)
return bLess;
else if (d1 > d2)
return bGreater;
}
break;
case OKeyType::NONE:
break;
}
++i;
}
// know we know that the values are equal
return false;
}
};
}
::rtl::Reference<OKeySet> OSortIndex::CreateKeySet()
{
Freeze();
::rtl::Reference<OKeySet> pKeySet = new OKeySet();
pKeySet->reserve(m_aKeyValues.size());
std::transform(m_aKeyValues.begin()
,m_aKeyValues.end()
,std::back_inserter(*pKeySet)
,::o3tl::select1st<TIntValuePairVector::value_type>());
pKeySet->setFrozen();
return pKeySet;
}
OSortIndex::OSortIndex( const std::vector<OKeyType>& _aKeyType,
const std::vector<TAscendingOrder>& _aAscending)
:m_aKeyType(_aKeyType)
,m_aAscending(_aAscending)
,m_bFrozen(false)
{
}
OSortIndex::~OSortIndex()
{
}
void OSortIndex::AddKeyValue(std::unique_ptr<OKeyValue> pKeyValue)
{
assert(pKeyValue && "Can not be null here!");
if(m_bFrozen)
{
m_aKeyValues.push_back({pKeyValue->getValue(),nullptr});
}
else
m_aKeyValues.push_back({pKeyValue->getValue(),std::move(pKeyValue)});
}
void OSortIndex::Freeze()
{
OSL_ENSURE(! m_bFrozen,"OSortIndex::Freeze: already frozen!");
// sorting:
if (m_aKeyType[0] != OKeyType::NONE)
// we will sort ourself when the first keyType say so
std::sort(m_aKeyValues.begin(),m_aKeyValues.end(),TKeyValueFunc(this));
for (auto & keyValue : m_aKeyValues)
{
keyValue.second.reset();
}
m_bFrozen = true;
}
OKeyValue::OKeyValue(sal_Int32 nVal)
: m_nValue(nVal)
{
}
OKeyValue::~OKeyValue()
{
}
std::unique_ptr<OKeyValue> OKeyValue::createKeyValue(sal_Int32 _nVal)
{
return std::unique_ptr<OKeyValue>(new OKeyValue(_nVal));
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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