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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <vespa/searchlib/datastore/entryref.h>
#include <vespa/searchlib/btree/btreeiterator.h>
namespace search {
namespace query { class Node; }
typedef btree::BTreeConstIterator<uint32_t, int32_t, btree::MinMaxAggregated, std::less<uint32_t>, btree::BTreeDefaultTraits> DocumentWeightIterator;
struct IDocumentWeightAttribute
{
struct LookupResult {
const datastore::EntryRef posting_idx;
const uint32_t posting_size;
const int32_t min_weight;
const int32_t max_weight;
LookupResult() : posting_idx(), posting_size(0), min_weight(0), max_weight(0) {}
LookupResult(datastore::EntryRef posting_idx_in, uint32_t posting_size_in, int32_t min_weight_in, int32_t max_weight_in)
: posting_idx(posting_idx_in), posting_size(posting_size_in), min_weight(min_weight_in), max_weight(max_weight_in) {}
};
virtual LookupResult lookup(const vespalib::string &term) const = 0;
virtual void create(datastore::EntryRef idx, std::vector<DocumentWeightIterator> &dst) const = 0;
virtual DocumentWeightIterator create(datastore::EntryRef idx) const = 0;
virtual ~IDocumentWeightAttribute() {}
};
} // namespace search
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