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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
/**
* @class search::SearchVisitor
*
* @brief Visitor that applies a search query to visitor data and converts them to a SearchResultCommand
*/
#pragma once
#include "attrvector.h"
#include "attrvector.hpp"
#include <vespa/searchcommon/attribute/i_multi_value_attribute.h>
namespace search {
// Translates the actual value type to the type required by IExtendAttribute.
template <typename T> struct AddValueType {
typedef int64_t Type;
};
template <> struct AddValueType<double> {
typedef double Type;
};
//******************** CollectionType::SINGLE ********************//
template <typename T> struct AttributeTemplate {
typedef search::IntegerAttributeTemplate<T> Type;
};
template <> struct AttributeTemplate<double> {
typedef search::FloatingPointAttributeTemplate<double> Type;
};
template <typename T>
class SingleExtAttribute
: public NumericDirectAttrVector<AttrVector::Features<false>,
typename AttributeTemplate<T>::Type>,
public IExtendAttribute
{
using Super = typename SingleExtAttribute<T>::NumDirectAttrVec;
using Config = typename Super::Config;
using BasicType = typename Super::BasicType;
using QueryTermSimpleUP = typename Super::QueryTermSimpleUP;
std::unique_ptr<attribute::SearchContext>
getSearch(QueryTermSimpleUP term, const attribute::SearchContextParams & params) const override
{
(void) term;
(void) params;
return {};
}
IExtendAttribute * getExtendInterface() override { return this; }
public:
SingleExtAttribute(const vespalib::string &name)
: Super(name, Config(BasicType::fromType(T()),
attribute::CollectionType::SINGLE)) {}
bool addDoc(typename Super::DocId &docId) override {
docId = this->_data.size();
this->_data.push_back(attribute::getUndefined<T>());
this->incNumDocs();
this->setCommittedDocIdLimit(this->getNumDocs());
return true;
}
bool add(typename AddValueType<T>::Type v, int32_t = 1) override {
this->_data.back() = v;
return true;
}
bool onLoad(vespalib::Executor *) override {
return false; // Emulate that this attribute is never loaded
}
void onAddDocs(typename Super::DocId lidLimit) override {
this->_data.reserve(lidLimit);
}
};
typedef SingleExtAttribute<int8_t> SingleInt8ExtAttribute;
typedef SingleExtAttribute<int16_t> SingleInt16ExtAttribute;
typedef SingleExtAttribute<int32_t> SingleInt32ExtAttribute;
typedef SingleExtAttribute<int64_t> SingleInt64ExtAttribute;
typedef SingleExtAttribute<double> SingleFloatExtAttribute;
typedef SingleInt64ExtAttribute SingleIntegerExtAttribute;
class SingleStringExtAttribute
: public StringDirectAttrVector< AttrVector::Features<false> >,
public IExtendAttribute
{
IExtendAttribute * getExtendInterface() override { return this; }
public:
SingleStringExtAttribute(const vespalib::string & name);
bool addDoc(DocId & docId) override;
bool add(const char * v, int32_t w = 1) override;
bool onLoad(vespalib::Executor *) override {
return false; // Emulate that this attribute is never loaded
}
void onAddDocs(DocId ) override { }
};
//******************** CollectionType::ARRAY ********************//
template <typename T>
class MultiExtAttribute
: public NumericDirectAttrVector<AttrVector::Features<true>, typename AttributeTemplate<T>::Type>,
public IExtendAttribute,
public attribute::IMultiValueAttribute
{
protected:
typedef typename MultiExtAttribute<T>::NumDirectAttrVec Super;
typedef typename Super::Config Config;
typedef typename Super::BasicType BasicType;
using QueryTermSimpleUP = AttributeVector::QueryTermSimpleUP;
MultiExtAttribute(const vespalib::string &name, const attribute::CollectionType &ctype)
: Super(name, Config(BasicType::fromType(T()), ctype))
{ }
private:
std::unique_ptr<attribute::SearchContext>
getSearch(QueryTermSimpleUP term, const attribute::SearchContextParams & params) const override
{
(void) term;
(void) params;
return {};
}
IExtendAttribute * getExtendInterface() override { return this; }
public:
MultiExtAttribute(const vespalib::string &name)
: Super(name, Config(BasicType::fromType(static_cast<T>(0)),
attribute::CollectionType::ARRAY)) {}
~MultiExtAttribute() override;
bool addDoc(typename Super::DocId &docId) override {
docId = this->_idx.size() - 1;
this->_idx.push_back(this->_idx.back());
this->incNumDocs();
this->setCommittedDocIdLimit(this->getNumDocs());
return true;
}
bool add(typename AddValueType<T>::Type v, int32_t = 1) override {
this->_data.push_back(v);
std::vector<uint32_t> &idx = this->_idx;
idx.back()++;
this->checkSetMaxValueCount(idx.back() - idx[idx.size() - 2]);
return true;
}
bool onLoad(vespalib::Executor *) override {
return false; // Emulate that this attribute is never loaded
}
void onAddDocs(uint32_t lidLimit) override {
this->_data.reserve(lidLimit);
}
const attribute::IMultiValueAttribute* as_multi_value_attribute() const override;
// Implements attribute::IMultiValueAttribute
const attribute::IArrayReadView<T>* make_read_view(attribute::IMultiValueAttribute::ArrayTag<T>, vespalib::Stash& stash) const override;
const attribute::IWeightedSetReadView<T>* make_read_view(attribute::IMultiValueAttribute::WeightedSetTag<T>, vespalib::Stash& stash) const override;
};
template <typename T>
MultiExtAttribute<T>::~MultiExtAttribute() = default;
typedef MultiExtAttribute<int8_t> MultiInt8ExtAttribute;
typedef MultiExtAttribute<int16_t> MultiInt16ExtAttribute;
typedef MultiExtAttribute<int32_t> MultiInt32ExtAttribute;
typedef MultiExtAttribute<int64_t> MultiInt64ExtAttribute;
typedef MultiExtAttribute<double> MultiFloatExtAttribute;
typedef MultiInt64ExtAttribute MultiIntegerExtAttribute;
class MultiStringExtAttribute :
public StringDirectAttrVector< AttrVector::Features<true> >,
public IExtendAttribute,
public attribute::IMultiValueAttribute
{
IExtendAttribute * getExtendInterface() override { return this; }
protected:
MultiStringExtAttribute(const vespalib::string & name, const attribute::CollectionType & ctype);
public:
MultiStringExtAttribute(const vespalib::string & name);
bool addDoc(DocId & docId) override;
bool add(const char * v, int32_t w = 1) override;
bool onLoad(vespalib::Executor *) override {
return false; // Emulate that this attribute is never loaded
}
void onAddDocs(DocId ) override { }
const attribute::IMultiValueAttribute* as_multi_value_attribute() const override;
// Implements attribute::IMultiValueAttribute
const attribute::IArrayReadView<const char*>* make_read_view(attribute::IMultiValueAttribute::ArrayTag<const char*>, vespalib::Stash& stash) const override;
const attribute::IWeightedSetReadView<const char*>* make_read_view(attribute::IMultiValueAttribute::WeightedSetTag<const char*>, vespalib::Stash& stash) const override;
};
//******************** CollectionType::WSET ********************//
template <typename B>
class WeightedSetExtAttributeBase : public B
{
private:
std::vector<int32_t> _weights;
protected:
void addWeight(int32_t w) {
_weights.push_back(w);
}
int32_t getWeightHelper(AttributeVector::DocId docId, uint32_t idx) const {
return _weights[this->_idx[docId] + idx];
}
WeightedSetExtAttributeBase(const vespalib::string & name) :
B(name, attribute::CollectionType::WSET),
_weights()
{}
~WeightedSetExtAttributeBase() {}
const std::vector<int32_t>& get_weights() const noexcept { return _weights; }
};
class WeightedSetIntegerExtAttribute
: public WeightedSetExtAttributeBase<MultiIntegerExtAttribute>
{
std::unique_ptr<attribute::SearchContext>
getSearch(QueryTermSimpleUP term, const attribute::SearchContextParams & params) const override
{
(void) term;
(void) params;
return {};
}
public:
WeightedSetIntegerExtAttribute(const vespalib::string & name);
~WeightedSetIntegerExtAttribute();
bool add(int64_t v, int32_t w = 1) override;
uint32_t get(DocId doc, AttributeVector::WeightedInt * v, uint32_t sz) const override;
// Implements attribute::IMultiValueAttribute
const attribute::IWeightedSetReadView<int64_t>* make_read_view(attribute::IMultiValueAttribute::WeightedSetTag<int64_t>, vespalib::Stash& stash) const override;
};
class WeightedSetFloatExtAttribute
: public WeightedSetExtAttributeBase<MultiFloatExtAttribute>
{
std::unique_ptr<attribute::SearchContext>
getSearch(QueryTermSimpleUP term, const attribute::SearchContextParams & params) const override
{
(void) term;
(void) params;
return {};
}
public:
WeightedSetFloatExtAttribute(const vespalib::string & name);
~WeightedSetFloatExtAttribute();
bool add(double v, int32_t w = 1) override;
uint32_t get(DocId doc, AttributeVector::WeightedFloat * v, uint32_t sz) const override;
// Implements attribute::IMultiValueAttribute
const attribute::IWeightedSetReadView<double>* make_read_view(attribute::IMultiValueAttribute::WeightedSetTag<double>, vespalib::Stash& stash) const override;
};
class WeightedSetStringExtAttribute
: public WeightedSetExtAttributeBase<MultiStringExtAttribute>
{
private:
const char * getHelper(DocId doc, int idx) const {
return &_buffer[_offsets[_idx[doc] + idx]];
}
template <typename T>
uint32_t getAllHelper(DocId doc, T * v, uint32_t sz) const
{
uint32_t valueCount = _idx[doc + 1] - _idx[doc];
uint32_t num2Read = std::min(valueCount, sz);
for (uint32_t i = 0; i < num2Read; ++i) {
v[i] = T(getHelper(doc, i), getWeightHelper(doc, i));
}
return valueCount;
}
public:
WeightedSetStringExtAttribute(const vespalib::string & name);
~WeightedSetStringExtAttribute();
bool add(const char * v, int32_t w = 1) override;
uint32_t get(DocId doc, AttributeVector::WeightedString * v, uint32_t sz) const override;
uint32_t get(DocId doc, AttributeVector::WeightedConstChar * v, uint32_t sz) const override;
// Implements attribute::IMultiValueAttribute
const attribute::IWeightedSetReadView<const char*>* make_read_view(attribute::IMultiValueAttribute::WeightedSetTag<const char*>, vespalib::Stash& stash) const override;
};
} // namespace search
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