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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_with_weight_posting_store.h"
#include "multistringattribute.h"
#include "postinglistattribute.h"
#include "string_direct_posting_store_adapter.h"
namespace search {
/**
* Implementation of multi value string attribute that in addition to enum store and
* multi value mapping uses an underlying posting list to provide faster search.
* This class is used for both array and weighted set types.
*
* B: EnumAttribute<StringAttribute>
* T: IEnumStore::Index (array) or
* multivalue::WeightedValue<IEnumStore::Index> (weighted set)
*/
template <typename B, typename T>
class MultiValueStringPostingAttributeT
: public MultiValueStringAttributeT<B, T>,
protected PostingListAttributeSubBase<AttributeWeightPosting,
typename B::LoadedVector,
typename B::LoadedValueType,
typename B::EnumStore>
{
public:
using EnumStore = typename MultiValueStringAttributeT<B, T>::EnumStore;
using EnumStoreBatchUpdater = typename EnumStore::BatchUpdater;
private:
using LoadedVector = typename B::LoadedVector;
using PostingParent = PostingListAttributeSubBase<AttributeWeightPosting,
LoadedVector,
typename B::LoadedValueType,
typename B::EnumStore>;
using ComparatorType = typename EnumStore::ComparatorType;
using DocId = typename MultiValueStringAttributeT<B, T>::DocId;
using DocIndices = typename MultiValueStringAttributeT<B, T>::DocIndices;
using Posting = typename PostingParent::Posting;
using PostingMap = typename PostingParent::PostingMap;
public:
using PostingStore = typename PostingParent::PostingStore;
private:
using QueryTermSimpleUP = AttributeVector::QueryTermSimpleUP;
using SelfType = MultiValueStringPostingAttributeT<B, T>;
using WeightedIndex = typename MultiValueStringAttributeT<B, T>::WeightedIndex;
using generation_t = typename MultiValueStringAttributeT<B, T>::generation_t;
using DirectPostingStoreAdapterType = attribute::StringDirectPostingStoreAdapter<IDocidWithWeightPostingStore,
PostingStore, EnumStore>;
DirectPostingStoreAdapterType _posting_store_adapter;
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;
void freezeEnumDictionary() override;
void mergeMemoryStats(vespalib::MemoryUsage & total) override;
void applyValueChanges(const DocIndices& docIndices, EnumStoreBatchUpdater& updater) override ;
public:
using PostingParent::get_posting_store;
using Dictionary = EnumPostingTree;
MultiValueStringPostingAttributeT(const vespalib::string & name, const AttributeVector::Config & c);
MultiValueStringPostingAttributeT(const vespalib::string & name);
~MultiValueStringPostingAttributeT();
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 IDocidWithWeightPostingStore *as_docid_with_weight_posting_store() const override;
bool onAddDoc(DocId doc) override {
return forwardedOnAddDoc(doc, this->_mvMapping.getNumKeys(), this->_mvMapping.getCapacityKeys());
}
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);
}
};
using ArrayStringPostingAttribute = MultiValueStringPostingAttributeT<EnumAttribute<StringAttribute>, vespalib::datastore::AtomicEntryRef>;
using WeightedSetStringPostingAttribute = MultiValueStringPostingAttributeT<EnumAttribute<StringAttribute>, multivalue::WeightedValue<vespalib::datastore::AtomicEntryRef> >;
} // namespace search
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