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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 "i_docid_posting_store.h"
#include "numeric_direct_posting_store_adapter.h"
#include "postinglistattribute.h"
#include "postinglistsearchcontext.h"
#include "singlenumericenumattribute.h"
namespace search {
/**
* Implementation of single value numeric attribute that in addition to enum store
* uses an underlying posting list to provide faster search.
*
* B: EnumAttribute<BaseClass>
*/
template <typename B>
class SingleValueNumericPostingAttribute
: public SingleValueNumericEnumAttribute<B>,
protected PostingListAttributeSubBase<AttributePosting,
typename B::LoadedVector,
typename B::LoadedValueType,
typename B::EnumStore>
{
public:
using T = typename SingleValueNumericEnumAttribute<B>::T;
using Dictionary = EnumPostingTree;
using EnumStore = typename SingleValueNumericEnumAttribute<B>::EnumStore;
using EnumStoreBatchUpdater = typename EnumStore::BatchUpdater;
private:
friend class PostingListAttributeTest;
template <typename, typename, typename>
friend class attribute::PostingSearchContext; // getEnumStore()
using LoadedVector = typename B::LoadedVector;
using PostingParent = PostingListAttributeSubBase<AttributePosting,
LoadedVector,
typename B::LoadedValueType,
typename B::EnumStore>;
using Change = typename B::BaseClass::Change;
using ComparatorType = typename EnumStore::ComparatorType;
using DocId = typename B::BaseClass::DocId;
using EnumIndex = typename SingleValueEnumAttributeBase::EnumIndex;
using PostingMap = typename PostingParent::PostingMap;
using PostingStore = typename PostingParent::PostingStore;
using QueryTermSimpleUP = AttributeVector::QueryTermSimpleUP;
using SelfType = SingleValueNumericPostingAttribute<B>;
using ValueModifier = typename B::BaseClass::ValueModifier;
using generation_t = typename SingleValueNumericEnumAttribute<B>::generation_t;
using PostingParent::_posting_store;
using PostingParent::clearAllPostings;
using PostingParent::handle_load_posting_lists;
using PostingParent::handle_load_posting_lists_and_update_enum_store;
using PostingParent::forwardedOnAddDoc;
using DirectPostingStoreAdapterType = attribute::NumericDirectPostingStoreAdapter<IDocidPostingStore,
PostingStore, EnumStore>;
DirectPostingStoreAdapterType _posting_store_adapter;
void freezeEnumDictionary() override;
void mergeMemoryStats(vespalib::MemoryUsage & total) override;
void applyUpdateValueChange(const Change & c, EnumStore & enumStore,
std::map<DocId, EnumIndex> & currEnumIndices);
void makePostingChange(const vespalib::datastore::EntryComparator &cmp,
const std::map<DocId, EnumIndex> &currEnumIndices,
PostingMap &changePost);
void applyValueChanges(EnumStoreBatchUpdater& updater) override;
public:
SingleValueNumericPostingAttribute(const vespalib::string & name, const AttributeVector::Config & cfg);
~SingleValueNumericPostingAttribute();
void reclaim_memory(generation_t oldest_used_gen) override;
void before_inc_generation(generation_t current_gen) override;
std::unique_ptr<attribute::SearchContext>
getSearch(QueryTermSimpleUP term, const attribute::SearchContextParams & params) const override;
const IDocidPostingStore* as_docid_posting_store() const override;
bool onAddDoc(DocId doc) override {
return forwardedOnAddDoc(doc, this->_enumIndices.size(), this->_enumIndices.capacity());
}
void onAddDocs(DocId docIdLimit) override {
forwardedOnAddDoc(docIdLimit, this->_enumIndices.size(), this->_enumIndices.capacity());
}
void load_posting_lists(LoadedVector& loaded) override { handle_load_posting_lists(loaded); }
attribute::IPostingListAttributeBase *getIPostingListAttributeBase() override { return this; }
const attribute::IPostingListAttributeBase *getIPostingListAttributeBase() const override { return this; }
void load_posting_lists_and_update_enum_store(enumstore::EnumeratedPostingsLoader& loader) override {
handle_load_posting_lists_and_update_enum_store(loader);
}
};
} // namespace search
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