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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "i_direct_posting_store.h"
#include <vespa/searchlib/queryeval/searchiterator.h>
namespace search::fef { class MatchData; }
namespace search::attribute {
/**
* Filter iterator on top of low-level posting list iterators or regular search iterators with OR semantics.
*
* Used during calculation of global filter for DotProduct and WandTerm.
*/
class MultiTermOrFilterSearch : public queryeval::SearchIterator
{
protected:
MultiTermOrFilterSearch() = default;
public:
static std::unique_ptr<SearchIterator> create(std::vector<DocidIterator>&& children);
static std::unique_ptr<SearchIterator> create(std::vector<DocidIterator>&& children, fef::TermFieldMatchData& tfmd);
static std::unique_ptr<SearchIterator> create(std::vector<DocidWithWeightIterator>&& children);
static std::unique_ptr<SearchIterator> create(std::vector<DocidWithWeightIterator>&& children, fef::TermFieldMatchData& tfmd);
static std::unique_ptr<SearchIterator> create(const std::vector<SearchIterator *>& children,
std::unique_ptr<fef::MatchData> md);
};
}
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