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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 "integerbase.h"
#include <vespa/searchlib/common/growablebitvector.h>
#include <limits>
namespace search {
class GrowStrategy;
/**
* Attributevector for boolean field values occupying a bit per document
* and backed by a growable rcu bit vector.
*/
class SingleBoolAttribute final : public IntegerAttributeTemplate<int8_t>
{
public:
SingleBoolAttribute(const vespalib::string & baseFileName, const GrowStrategy & grow, bool paged);
~SingleBoolAttribute() override;
void onCommit() override;
bool addDoc(DocId & doc) override;
void onAddDocs(DocId docIdLimit) override;
void onUpdateStat() override;
bool onLoad(vespalib::Executor *executor) override;
void onSave(IAttributeSaveTarget &saveTarget) override;
void clearDocs(DocId lidLow, DocId lidLimit, bool in_shrink_lid_space) override;
void onShrinkLidSpace() override;
void reclaim_memory(generation_t oldest_used_gen) override;
void before_inc_generation(generation_t current_gen) override;
uint64_t getEstimatedSaveByteSize() const override;
std::unique_ptr<attribute::SearchContext>
getSearch(std::unique_ptr<QueryTermSimple> term, const attribute::SearchContextParams & params) const override;
uint32_t getValueCount(DocId doc) const override {
return (doc >= _bv.reader().size()) ? 0 : 1;
}
largeint_t getInt(DocId doc) const override {
return static_cast<largeint_t>(getFast(doc));
}
double getFloat(DocId doc) const override {
return static_cast<double>(getFast(doc));
}
uint32_t getEnum(DocId) const override {
return std::numeric_limits<uint32_t>::max(); // does not have enum
}
uint32_t get(DocId doc, largeint_t * v, uint32_t sz) const override {
if (sz > 0) {
v[0] = static_cast<largeint_t>(getFast(doc));
}
return 1;
}
uint32_t get(DocId doc, double * v, uint32_t sz) const override {
if (sz > 0) {
v[0] = static_cast<double>(getFast(doc));
}
return 1;
}
uint32_t get(DocId doc, EnumHandle * e, uint32_t sz) const override {
if (sz > 0) {
e[0] = getEnum(doc);
}
return 1;
}
uint32_t get(DocId doc, WeightedInt * v, uint32_t sz) const override {
if (sz > 0) {
v[0] = WeightedInt(static_cast<largeint_t>(getFast(doc)));
}
return 1;
}
uint32_t get(DocId doc, WeightedFloat * v, uint32_t sz) const override {
if (sz > 0) {
v[0] = WeightedFloat(static_cast<double>(getFast(doc)));
}
return 1;
}
uint32_t get(DocId, WeightedEnum *, uint32_t) const override {
return 0;
}
int8_t get(DocId doc) const override {
return getFast(doc);
}
const BitVector & getBitVector() const { return _bv.reader(); }
void setBit(DocId doc, bool value) {
if (value) {
_bv.writer().setBitAndMaintainCount(doc);
} else {
_bv.writer().clearBitAndMaintainCount(doc);
}
}
protected:
bool findEnum(int8_t, EnumHandle &) const override {
return false;
}
private:
void ensureRoom(DocId docIdLimit);
int8_t getFromEnum(EnumHandle) const override {
return 0;
}
int8_t getFast(DocId doc) const {
return _bv.reader().testBit(doc) ? 1 : 0;
}
vespalib::alloc::Alloc _init_alloc;
GrowableBitVector _bv;
};
}
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