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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 "search_context.h"
#include "enumstore.h"
namespace search::attribute {
/*
* SingleEnumSearchContext handles the creation of search iterators for
* a query term on a single value enumerated attribute vector.
* This class should be considered to be an abstract class.
*/
template <typename T, typename BaseSC>
class SingleEnumSearchContext : public BaseSC
{
protected:
using DocId = ISearchContext::DocId;
using AtomicEntryRef = vespalib::datastore::AtomicEntryRef;
using EnumIndices = vespalib::ConstArrayRef<AtomicEntryRef>;
EnumIndices _enum_indices;
const EnumStoreT<T>& _enum_store;
int32_t onFind(DocId docId, int32_t elemId, int32_t & weight) const final {
return find(docId, elemId, weight);
}
int32_t onFind(DocId docId, int32_t elemId) const final {
return find(docId, elemId);
}
public:
SingleEnumSearchContext(typename BaseSC::MatcherType&& matcher, const AttributeVector& toBeSearched, EnumIndices enum_indices, const EnumStoreT<T>& enum_store);
int32_t find(DocId docId, int32_t elemId, int32_t & weight) const {
if ( elemId != 0) return -1;
T v = _enum_store.get_value(_enum_indices[docId].load_acquire());
weight = 1;
return this->match(v) ? 0 : -1;
}
int32_t find(DocId docId, int32_t elemId) const {
if ( elemId != 0) return -1;
T v = _enum_store.get_value(_enum_indices[docId].load_acquire());
return this->match(v) ? 0 : -1;
}
std::unique_ptr<queryeval::SearchIterator>
createFilterIterator(fef::TermFieldMatchData* matchData, bool strict) override;
uint32_t get_committed_docid_limit() const noexcept override;
};
}
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