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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "singlenumericpostattribute.h"
#include "enumstore.h"
#include "enumcomparator.h"
#include "singlenumericenumattribute.hpp"
namespace search {
template <typename B>
SingleValueNumericPostingAttribute<B>::~SingleValueNumericPostingAttribute()
{
this->disableFreeLists();
this->disable_entry_hold_list();
clearAllPostings();
}
template <typename B>
SingleValueNumericPostingAttribute<B>::SingleValueNumericPostingAttribute(const vespalib::string & name,
const AttributeVector::Config & c) :
SingleValueNumericEnumAttribute<B>(name, c),
PostingParent(*this, this->getEnumStore())
{
}
template <typename B>
void
SingleValueNumericPostingAttribute<B>::freezeEnumDictionary()
{
this->getEnumStore().freeze_dictionary();
}
template <typename B>
void
SingleValueNumericPostingAttribute<B>::mergeMemoryStats(vespalib::MemoryUsage & total)
{
auto& compaction_strategy = this->getConfig().getCompactionStrategy();
total.merge(this->_postingList.update_stat(compaction_strategy));
}
template <typename B>
void
SingleValueNumericPostingAttribute<B>::applyUpdateValueChange(const Change & c,
EnumStore & enumStore,
std::map<DocId, EnumIndex> & currEnumIndices)
{
EnumIndex newIdx;
if (c.has_entry_ref()) {
newIdx = EnumIndex(vespalib::datastore::EntryRef(c.get_entry_ref()));
} else {
enumStore.find_index(c._data.raw(), newIdx);
}
currEnumIndices[c._doc] = newIdx;
}
template <typename B>
void
SingleValueNumericPostingAttribute<B>::
makePostingChange(const vespalib::datastore::EntryComparator &cmpa,
const std::map<DocId, EnumIndex> &currEnumIndices,
PostingMap &changePost)
{
for (const auto& elem : currEnumIndices) {
uint32_t docId = elem.first;
EnumIndex oldIdx = this->_enumIndices[docId].load_relaxed();
EnumIndex newIdx = elem.second;
// add new posting
changePost[EnumPostingPair(newIdx, &cmpa)].add(docId, 1);
// remove old posting
if ( oldIdx.valid()) {
changePost[EnumPostingPair(oldIdx, &cmpa)].remove(docId);
}
}
}
template <typename B>
void
SingleValueNumericPostingAttribute<B>::applyValueChanges(EnumStoreBatchUpdater& updater)
{
EnumStore & enumStore = this->getEnumStore();
IEnumStoreDictionary& dictionary = enumStore.get_dictionary();
PostingMap changePost;
// used to make sure several arithmetic operations on the same document in a single commit works
std::map<DocId, EnumIndex> currEnumIndices;
// This avoids searching for the defaultValue in the enum store for each CLEARDOC in the change vector.
this->cache_change_data_entry_ref(this->_defaultValue);
for (const auto& change : this->_changes.getInsertOrder()) {
auto enumIter = currEnumIndices.find(change._doc);
EnumIndex oldIdx;
if (enumIter != currEnumIndices.end()) {
oldIdx = enumIter->second;
} else {
oldIdx = this->_enumIndices[change._doc].load_relaxed();
}
if (change._type == ChangeBase::UPDATE) {
applyUpdateValueChange(change, enumStore, currEnumIndices);
} else if (change._type >= ChangeBase::ADD && change._type <= ChangeBase::DIV) {
if (oldIdx.valid()) {
T oldValue = enumStore.get_value(oldIdx);
T newValue = this->template applyArithmetic<T, typename Change::DataType>(oldValue, change._data.getArithOperand(), change._type);
EnumIndex newIdx;
(void) dictionary.find_index(enumStore.make_comparator(newValue), newIdx);
currEnumIndices[change._doc] = newIdx;
}
} else if(change._type == ChangeBase::CLEARDOC) {
Change clearDoc(this->_defaultValue);
clearDoc._doc = change._doc;
applyUpdateValueChange(clearDoc, enumStore, currEnumIndices);
}
}
// We must clear the cached entry ref as the defaultValue might be located in another data buffer on later invocations.
this->_defaultValue.clear_entry_ref();
makePostingChange(enumStore.get_comparator(), currEnumIndices, changePost);
this->updatePostings(changePost);
SingleValueNumericEnumAttribute<B>::applyValueChanges(updater);
}
template <typename B>
void
SingleValueNumericPostingAttribute<B>::reclaim_memory(generation_t oldest_used_gen)
{
SingleValueNumericEnumAttribute<B>::reclaim_memory(oldest_used_gen);
_postingList.reclaim_memory(oldest_used_gen);
}
template <typename B>
void
SingleValueNumericPostingAttribute<B>::before_inc_generation(generation_t current_gen)
{
_postingList.freeze();
SingleValueNumericEnumAttribute<B>::before_inc_generation(current_gen);
_postingList.assign_generation(current_gen);
}
template <typename B>
std::unique_ptr<attribute::SearchContext>
SingleValueNumericPostingAttribute<B>::getSearch(QueryTermSimple::UP qTerm,
const attribute::SearchContextParams & params) const
{
using BaseSC = attribute::SingleNumericEnumSearchContext<T>;
using SC = attribute::NumericPostingSearchContext<BaseSC, SelfType, vespalib::btree::BTreeNoLeafData>;
BaseSC base_sc(std::move(qTerm), *this, &this->_enumIndices.acquire_elem_ref(0), this->_enumStore);
return std::make_unique<SC>(std::move(base_sc), params, *this);
}
} // namespace search
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