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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <vespa/searchlib/queryeval/searchiterator.h>
#include <vespa/searchlib/fef/termfieldmatchdata.h>
#include <vespa/searchlib/fef/termfieldmatchdataarray.h>
using search::fef::TermFieldMatchData;
using search::fef::TermFieldMatchDataPosition;
#include <map>
#include <vector>
#include <string>
namespace search::fakedata {
/*
* Base class for faked posting list formats.
*/
class FakePosting
{
private:
FakePosting(const FakePosting &);
FakePosting &
operator=(const FakePosting &);
std::string _name;
public:
using SP = std::shared_ptr<FakePosting>;
FakePosting(const std::string &name);
virtual ~FakePosting();
/*
* Size of posting list, in bits.
*/
virtual size_t bitSize() const = 0;
virtual size_t skipBitSize() const;
virtual size_t l1SkipBitSize() const;
virtual size_t l2SkipBitSize() const;
virtual size_t l3SkipBitSize() const;
virtual size_t l4SkipBitSize() const;
virtual bool hasWordPositions() const = 0;
virtual bool has_interleaved_features() const;
virtual bool enable_unpack_normal_features() const;
virtual bool enable_unpack_interleaved_features() const;
/*
* Single posting list performance, without feature unpack.
*/
virtual int lowLevelSinglePostingScan() const = 0;
/*
* Single posting list performance, with feature unpack.
*/
virtual int lowLevelSinglePostingScanUnpack() const = 0;
/*
* Two posting lists performance (same format) without feature unpack.
*/
virtual int lowLevelAndPairPostingScan(const FakePosting &rhs) const = 0;
/*
* Two posting lists performance (same format) with feature unpack.
*/
virtual int lowLevelAndPairPostingScanUnpack(const FakePosting &rhs) const = 0;
/*
* Iterator factory, for current query evaluation framework.
*/
virtual std::unique_ptr<search::queryeval::SearchIterator>
createIterator(const fef::TermFieldMatchDataArray &matchData) const = 0;
const std::string &getName() const
{
return _name;
}
};
}
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