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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 "attributevector.h"
#include "loadedenumvalue.h"
#include "enumstore.h"
#include "no_loaded_vector.h"
namespace search {
template <typename B>
class EnumAttribute : public B
{
protected:
using BaseClass = B;
using Change = typename B::Change;
using ChangeVector = typename B::ChangeVector;
using DocId = typename B::DocId;
using EnumEntryType = typename B::EnumEntryType; // Template argument for enum store
using EnumHandle = typename B::EnumHandle;
using ValueModifier = typename B::ValueModifier;
public:
using EnumVector = typename B::EnumVector;
using LoadedVector = typename B::LoadedVector;
protected:
using generation_t = typename B::generation_t;
using B::getGenerationHolder;
public:
using EnumStore = EnumStoreT<EnumEntryType>;
using EnumStoreBatchUpdater = typename EnumStore::BatchUpdater;
protected:
using EnumIndex = IEnumStore::Index;
EnumStore _enumStore;
const IEnumStore* getEnumStoreBase() const override { return &_enumStore; }
IEnumStore* getEnumStoreBase() override { return &_enumStore; }
EnumEntryType getFromEnum(EnumHandle e) const override { return _enumStore.get_value(e); }
void load_posting_lists(LoadedVector& loaded) override { (void) loaded; }
void load_enum_store(LoadedVector& loaded) override;
uint64_t getUniqueValueCount() const override;
EnumEntryType getDefaultEnumTypeValue() { return B::defaultValue(); }
/*
* Iterate through the change vector and find new unique values.
* Insert the new unique values into the EnumStore.
*/
void insertNewUniqueValues(EnumStoreBatchUpdater& updater);
virtual void considerAttributeChange(const Change & c, EnumStoreBatchUpdater & inserter) = 0;
vespalib::MemoryUsage getEnumStoreValuesMemoryUsage() const override;
void populate_address_space_usage(AddressSpaceUsage& usage) const override;
public:
EnumAttribute(const vespalib::string & baseFileName, const AttributeVector::Config & cfg);
~EnumAttribute();
bool findEnum(EnumEntryType v, EnumHandle & e) const override { return _enumStore.find_enum(v, e); }
const EnumStore & getEnumStore() const { return _enumStore; }
EnumStore & getEnumStore() { return _enumStore; }
};
} // namespace search
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