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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 "integerbase.h"
#include "floatbase.h"
#include "search_context.h"
#include <vespa/vespalib/util/atomic.h>
#include <vespa/vespalib/util/rcuvector.h>
#include <limits>
namespace search {
template <typename B>
class SingleValueNumericAttribute final : public B {
private:
using T = typename B::BaseType;
using DataVector = vespalib::RcuVectorBase<T>;
using DocId = typename B::DocId;
using EnumHandle = typename B::EnumHandle;
using Weighted = typename B::Weighted;
using WeightedEnum = typename B::WeightedEnum;
using WeightedFloat = typename B::WeightedFloat;
using WeightedInt = typename B::WeightedInt;
using generation_t = typename B::generation_t;
using largeint_t = typename B::largeint_t;
using B::getGenerationHolder;
DataVector _data;
T getFromEnum(EnumHandle e) const override {
(void) e;
return T();
}
protected:
bool findEnum(T value, EnumHandle & e) const override {
(void) value; (void) e;
return false;
}
public:
SingleValueNumericAttribute(const vespalib::string & baseFileName); // Only for testing
SingleValueNumericAttribute(const vespalib::string & baseFileName, const AttributeVector::Config & c);
~SingleValueNumericAttribute();
uint32_t getValueCount(DocId doc) const override {
if (doc >= B::getNumDocs()) {
return 0;
}
return 1;
}
void onCommit() override;
void onAddDocs(DocId lidLimit) override;
void onUpdateStat() override;
void removeOldGenerations(generation_t firstUsed) override;
void onGenerationChange(generation_t generation) override;
bool addDoc(DocId & doc) override;
bool onLoad(vespalib::Executor *executor) override;
bool onLoadEnumerated(ReaderBase &attrReader);
std::unique_ptr<attribute::SearchContext>
getSearch(std::unique_ptr<QueryTermSimple> term, const attribute::SearchContextParams & params) const override;
void set(DocId doc, T v) {
vespalib::atomic::store_ref_relaxed(_data[doc], v);
}
T getFast(DocId doc) const {
return vespalib::atomic::load_ref_relaxed(_data.acquire_elem_ref(doc));
}
//-------------------------------------------------------------------------
// new read api
//-------------------------------------------------------------------------
T get(DocId doc) const override {
return getFast(doc);
}
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 doc) const override {
(void) doc;
return std::numeric_limits<uint32_t>::max(); // does not have enum
}
uint32_t get(DocId doc, largeint_t * v, uint32_t sz) const override {
(void) sz;
v[0] = static_cast<largeint_t>(getFast(doc));
return 1;
}
uint32_t get(DocId doc, double * v, uint32_t sz) const override {
(void) sz;
v[0] = static_cast<double>(getFast(doc));
return 1;
}
uint32_t get(DocId doc, EnumHandle * e, uint32_t sz) const override {
(void) sz;
e[0] = getEnum(doc);
return 1;
}
uint32_t get(DocId doc, WeightedInt * v, uint32_t sz) const override {
(void) sz;
v[0] = WeightedInt(static_cast<largeint_t>(getFast(doc)));
return 1;
}
uint32_t get(DocId doc, WeightedFloat * v, uint32_t sz) const override {
(void) sz;
v[0] = WeightedFloat(static_cast<double>(getFast(doc)));
return 1;
}
uint32_t get(DocId doc, WeightedEnum * e, uint32_t sz) const override {
(void) doc; (void) e; (void) sz;
return 0;
}
void clearDocs(DocId lidLow, DocId lidLimit, bool in_shrink_lid_space) override;
void onShrinkLidSpace() override;
std::unique_ptr<AttributeSaver> onInitSave(vespalib::stringref fileName) override;
};
}
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