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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "singlestringpostattribute.h"
#include "single_string_enum_search_context.h"
#include <vespa/searchcommon/attribute/config.h>
#include <vespa/searchlib/query/query_term_ucs4.h>
namespace search {
template <typename B>
SingleValueStringPostingAttributeT<B>::SingleValueStringPostingAttributeT(const vespalib::string & name,
const AttributeVector::Config & c) :
SingleValueStringAttributeT<B>(name, c),
PostingParent(*this, this->getEnumStore())
{
}
template <typename B>
SingleValueStringPostingAttributeT<B>::SingleValueStringPostingAttributeT(const vespalib::string & name)
: SingleValueStringPostingAttributeT<B>(name, AttributeVector::Config(AttributeVector::BasicType::STRING))
{
}
template <typename B>
SingleValueStringPostingAttributeT<B>::~SingleValueStringPostingAttributeT()
{
this->disableFreeLists();
this->disable_entry_hold_list();
clearAllPostings();
}
template <typename B>
void
SingleValueStringPostingAttributeT<B>::freezeEnumDictionary()
{
this->getEnumStore().freeze_dictionary();
}
template <typename B>
void
SingleValueStringPostingAttributeT<B>::mergeMemoryStats(vespalib::MemoryUsage & total)
{
auto& compaction_strategy = this->getConfig().getCompactionStrategy();
total.merge(this->_postingList.update_stat(compaction_strategy));
}
template <typename B>
void
SingleValueStringPostingAttributeT<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
SingleValueStringPostingAttributeT<B>::
makePostingChange(const vespalib::datastore::EntryComparator &cmpa,
IEnumStoreDictionary& dictionary,
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
auto remapped_new_idx = dictionary.remap_index(newIdx);
changePost[EnumPostingPair(remapped_new_idx, &cmpa)].add(docId, 1);
// remove old posting
if ( oldIdx.valid()) {
auto remapped_old_idx = dictionary.remap_index(oldIdx);
changePost[EnumPostingPair(remapped_old_idx, &cmpa)].remove(docId);
}
}
}
template <typename B>
void
SingleValueStringPostingAttributeT<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;
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::CLEARDOC) {
currEnumIndices[change._doc] = enumStore.get_default_value_ref().load_relaxed();
}
}
makePostingChange(enumStore.get_folded_comparator(), dictionary, currEnumIndices, changePost);
this->updatePostings(changePost);
SingleValueStringAttributeT<B>::applyValueChanges(updater);
}
template <typename B>
void
SingleValueStringPostingAttributeT<B>::reclaim_memory(generation_t oldest_used_gen)
{
SingleValueStringAttributeT<B>::reclaim_memory(oldest_used_gen);
_postingList.reclaim_memory(oldest_used_gen);
}
template <typename B>
void
SingleValueStringPostingAttributeT<B>::before_inc_generation(generation_t current_gen)
{
_postingList.freeze();
SingleValueStringAttributeT<B>::before_inc_generation(current_gen);
_postingList.assign_generation(current_gen);
}
template <typename B>
std::unique_ptr<attribute::SearchContext>
SingleValueStringPostingAttributeT<B>::getSearch(QueryTermSimpleUP qTerm,
const attribute::SearchContextParams & params) const
{
using BaseSC = attribute::SingleStringEnumSearchContext;
using SC = attribute::StringPostingSearchContext<BaseSC, SelfType, vespalib::btree::BTreeNoLeafData>;
bool cased = this->get_match_is_cased();
auto docid_limit = this->getCommittedDocIdLimit();
BaseSC base_sc(std::move(qTerm), cased, params.fuzzy_matching_algorithm(), *this, this->_enumIndices.make_read_view(docid_limit), this->_enumStore);
return std::make_unique<SC>(std::move(base_sc),
params.useBitVector(),
*this);
}
} // namespace search
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