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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <vespa/searchlib/attribute/singleenumattribute.h>
#include <vespa/searchlib/attribute/numericbase.h>
#include <vespa/searchlib/attribute/attributeiterators.h>
#include <vespa/searchlib/queryeval/emptysearch.h>
namespace search {
/*
* Implementation of single value numeric enum attribute that uses an underlying enum store
* to store unique numeric values.
*
* B: EnumAttribute<NumericBaseClass>
*/
template <typename B>
class SingleValueNumericEnumAttribute : public SingleValueEnumAttribute<B>
{
protected:
typedef typename B::BaseClass::BaseType T;
typedef typename B::BaseClass::Change Change;
typedef typename B::BaseClass::DocId DocId;
typedef typename B::BaseClass::EnumHandle EnumHandle;
typedef typename B::BaseClass::largeint_t largeint_t;
typedef typename B::BaseClass::Weighted Weighted;
typedef typename B::BaseClass::WeightedInt WeightedInt;
typedef typename B::BaseClass::WeightedFloat WeightedFloat;
typedef typename B::BaseClass::generation_t generation_t;
typedef typename B::BaseClass::LoadedNumericValueT LoadedNumericValueT;
typedef typename B::BaseClass::LoadedVector LoadedVector;
typedef SequentialReadModifyWriteVector<LoadedNumericValueT, vespalib::DefaultAlloc> LoadedVectorR;
typedef typename SingleValueEnumAttribute<B>::EnumStore EnumStore;
typedef typename SingleValueEnumAttributeBase::EnumIndex EnumIndex;
typedef typename SingleValueEnumAttribute<B>::UniqueSet UniqueSet;
typedef EnumStoreBase::IndexVector EnumIndexVector;
typedef EnumStoreBase::EnumVector EnumVector;
typedef attribute::LoadedEnumAttributeVector LoadedEnumAttributeVector;
typedef attribute::LoadedEnumAttribute LoadedEnumAttribute;
private:
// used to make sure several arithmetic operations on the same document in a single commit works
std::map<DocId, T> _currDocValues;
protected:
// from SingleValueEnumAttribute
virtual void considerUpdateAttributeChange(const Change & c);
virtual void considerArithmeticAttributeChange(const Change & c, UniqueSet & newUniques);
virtual void applyArithmeticValueChange(const Change & c, EnumStoreBase::IndexVector & unused);
/*
* Specialization of SearchContext
*/
class SingleSearchContext : public NumericAttribute::Range<T>, public AttributeVector::SearchContext
{
protected:
const SingleValueNumericEnumAttribute<B> & _toBeSearched;
virtual bool
onCmp(DocId docId, int32_t & weight) const
{
return cmp(docId, weight);
}
virtual bool
onCmp(DocId docId) const
{
return cmp(docId);
}
virtual bool valid() const { return this->isValid(); }
public:
SingleSearchContext(QueryTermSimple::UP qTerm, const NumericAttribute & toBeSearched) :
NumericAttribute::Range<T>(*qTerm, true),
AttributeVector::SearchContext(toBeSearched),
_toBeSearched(static_cast<const SingleValueNumericEnumAttribute<B> &>(toBeSearched))
{
}
virtual Int64Range getAsIntegerTerm() const {
return this->getRange();
}
bool
cmp(DocId docId, int32_t & weight) const
{
T v = _toBeSearched._enumStore.getValue(
_toBeSearched.getEnumIndex(docId));
weight = 1;
return this->match(v);
}
bool
cmp(DocId docId) const
{
T v = _toBeSearched._enumStore.getValue(
_toBeSearched.getEnumIndex(docId));
return this->match(v);
}
virtual std::unique_ptr<queryeval::SearchIterator>
createFilterIterator(fef::TermFieldMatchData * matchData, bool strict)
{
if (!valid()) {
return queryeval::SearchIterator::UP(
new queryeval::EmptySearch());
}
if (getIsFilter()) {
return queryeval::SearchIterator::UP
(strict
? new FilterAttributeIteratorStrict<SingleSearchContext>(*this, matchData)
: new FilterAttributeIteratorT<SingleSearchContext>(*this, matchData));
}
return queryeval::SearchIterator::UP
(strict
? new AttributeIteratorStrict<SingleSearchContext>(*this, matchData)
: new AttributeIteratorT<SingleSearchContext>(*this, matchData));
}
};
public:
SingleValueNumericEnumAttribute(const vespalib::string & baseFileName,
const AttributeVector::Config & c =
AttributeVector::Config(AttributeVector::BasicType::fromType(T()),
attribute::CollectionType::SINGLE));
virtual void onCommit();
virtual bool onLoad();
bool
onLoadEnumerated(typename B::ReaderBase &attrReader);
AttributeVector::SearchContext::UP
getSearch(QueryTermSimple::UP term, const AttributeVector::SearchContext::Params & params) const override;
//-------------------------------------------------------------------------
// Attribute read API
//-------------------------------------------------------------------------
virtual T get(DocId doc) const {
return this->_enumStore.getValue(this->_enumIndices[doc]);
}
virtual largeint_t getInt(DocId doc) const {
return static_cast<largeint_t>(get(doc));
}
virtual double getFloat(DocId doc) const {
return static_cast<double>(get(doc));
}
virtual uint32_t getAll(DocId doc, T * v, uint32_t sz) const {
if (sz > 0) {
v[0] = get(doc);
}
return 1;
}
virtual uint32_t get(DocId doc, largeint_t * v, uint32_t sz) const {
if (sz > 0) {
v[0] = getInt(doc);
}
return 1;
}
virtual uint32_t get(DocId doc, double * v, uint32_t sz) const {
if (sz > 0) {
v[0] = getFloat(doc);
}
return 1;
}
virtual uint32_t getAll(DocId doc, Weighted * v, uint32_t sz) const {
if (sz > 0) {
v[0] = Weighted(get(doc));
}
return 1;
}
virtual uint32_t get(DocId doc, WeightedInt * v, uint32_t sz) const {
if (sz > 0) {
v[0] = WeightedInt(getInt(doc));
}
return 1;
}
virtual uint32_t get(DocId doc, WeightedFloat * v, uint32_t sz) const {
if (sz > 0) {
v[0] = WeightedFloat(getFloat(doc));
}
return 1;
}
};
}
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