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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_enum_store.h"
#include <vespa/searchcommon/common/undefinedvalues.h>
#include <vespa/vespalib/datastore/entryref.h>
namespace search
{
namespace attribute
{
/*
* Temporary representation of enumerated attribute loaded from non-enumerated
* save file (i.e. old save format).
*/
template <typename T>
class LoadedValue
{
public:
LoadedValue()
: _docId(0),
_idx(0),
_pidx(0),
_weight(1)
{
memset(&_value, 0, sizeof(_value));
}
class DocRadix
{
public:
uint64_t
operator() (const LoadedValue<T> & v) const
{
uint64_t tmp(v._docId);
return tmp << 32 | v._idx;
}
};
class DocOrderCompare
{
public:
bool
operator()(const LoadedValue<T> &x,
const LoadedValue<T> &y) const
{
int32_t diff(x._docId - y._docId);
if (diff == 0) {
diff = x._idx - y._idx;
}
return diff < 0;
}
};
IEnumStore::Index
getEidx() const
{
return IEnumStore::Index(vespalib::datastore::EntryRef(_value._eidx));
}
void
setEidx(IEnumStore::Index v)
{
_value._eidx = v.ref();
}
T
getValue() const
{
return _value._value;
}
inline void
setValue(T v)
{
_value._value = v;
}
int32_t
getWeight() const
{
return _weight;
}
void
setWeight(int32_t v)
{
_weight = v;
}
inline bool
operator<(const LoadedValue<T> &rhs) const
{
return _value._value < rhs._value._value;
}
union Value {
T _value;
uint32_t _eidx;
};
uint32_t _docId;
uint32_t _idx;
vespalib::datastore::EntryRef _pidx;
private:
int32_t _weight;
Value _value;
};
template <>
inline void
LoadedValue<float>::setValue(float v)
{
// Consolidate nans during load to avoid sort order issues
_value._value = isUndefined<float>(v) ? getUndefined<float>() : v;
}
template <>
inline void
LoadedValue<double>::setValue(double v)
{
// Consolidate nans during load to avoid sort order issues
_value._value = isUndefined<double>(v) ? getUndefined<double>() : v;
}
template <>
inline bool
LoadedValue<float>::operator<(const LoadedValue<float> &rhs) const
{
if (std::isnan(_value._value)) {
return !std::isnan(rhs._value._value);
}
if (std::isnan(rhs._value._value)) {
return false;
}
return _value._value < rhs._value._value;
}
template <>
inline bool
LoadedValue<double>::operator<(const LoadedValue<double> &rhs) const
{
if (std::isnan(_value._value)) {
return !std::isnan(rhs._value._value);
}
if (std::isnan(rhs._value._value)) {
return false;
}
return _value._value < rhs._value._value;
}
} // namespace attribute
} // namespace search
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