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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 "load_utils.h"
#include "attributevector.h"
#include <vespa/searchcommon/attribute/multivalue.h>
#include <cassert>
namespace search::attribute {
template <class MvMapping, class Saver>
uint32_t
loadFromEnumeratedMultiValue(MvMapping & mapping,
ReaderBase & attrReader,
vespalib::ConstArrayRef<atomic_utils::NonAtomicValue_t<multivalue::ValueType_t<typename MvMapping::MultiValueType>>> enumValueToValueMap,
vespalib::ConstArrayRef<uint32_t> enum_value_remapping,
Saver saver)
{
mapping.prepareLoadFromMultiValue();
using MultiValueType = typename MvMapping::MultiValueType;
using ValueType = multivalue::ValueType_t<MultiValueType>;
using NonAtomicValueType = atomic_utils::NonAtomicValue_t<ValueType>;
std::vector<MultiValueType> indices;
uint32_t numDocs = attrReader.getNumIdx() - 1;
uint64_t numValues = attrReader.getEnumCount();
uint64_t totalValueCount = 0;
uint32_t maxValueCount = 0;
for (uint32_t doc = 0; doc < numDocs; ++doc) {
indices.clear();
uint32_t valueCount = attrReader.getNextValueCount();
totalValueCount += valueCount;
indices.reserve(valueCount);
for (uint32_t vci = 0; vci < valueCount; ++vci) {
uint32_t enumValue = attrReader.getNextEnum();
assert(enumValue < enumValueToValueMap.size());
if (!enum_value_remapping.empty()) {
enumValue = enum_value_remapping[enumValue];
}
int32_t weight = multivalue::is_WeightedValue_v<MultiValueType> ? attrReader.getNextWeight() : 1;
if constexpr (std::is_same_v<ValueType, NonAtomicValueType>) {
indices.emplace_back(multivalue::ValueBuilder<MultiValueType>::build(enumValueToValueMap[enumValue], weight));
} else {
indices.emplace_back(multivalue::ValueBuilder<MultiValueType>::build(ValueType(enumValueToValueMap[enumValue]), weight));
}
saver.save(enumValue, doc, weight);
}
if (maxValueCount < indices.size()) {
maxValueCount = indices.size();
}
mapping.set(doc, indices);
}
assert(totalValueCount == numValues);
mapping.doneLoadFromMultiValue();
(void) numValues;
return maxValueCount;
}
template <class Vector, class Saver>
void
loadFromEnumeratedSingleValue(Vector &vector,
vespalib::GenerationHolder &genHolder,
ReaderBase &attrReader,
vespalib::ConstArrayRef<atomic_utils::NonAtomicValue_t<typename Vector::ValueType>> enumValueToValueMap,
vespalib::ConstArrayRef<uint32_t> enum_value_remapping,
Saver saver)
{
using ValueType = typename Vector::ValueType;
using NonAtomicValueType = atomic_utils::NonAtomicValue_t<ValueType>;
uint32_t numDocs = attrReader.getEnumCount();
genHolder.reclaim_all();
vector.reset();
vector.unsafe_reserve(numDocs);
for (uint32_t doc = 0; doc < numDocs; ++doc) {
uint32_t enumValue = attrReader.getNextEnum();
assert(enumValue < enumValueToValueMap.size());
if (!enum_value_remapping.empty()) {
enumValue = enum_value_remapping[enumValue];
}
if constexpr (std::is_same_v<ValueType, NonAtomicValueType>) {
vector.push_back(enumValueToValueMap[enumValue]);
} else {
vector.push_back(ValueType(enumValueToValueMap[enumValue]));
}
saver.save(enumValue, doc, 1);
}
}
}
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