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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/searchcommon/common/range.h>
#include <vespa/vespalib/stllike/string.h>
namespace search {
namespace fef {
class TermFieldMatchData;
}
namespace queryeval {
class SearchIterator;
}
class QueryTermBase;
namespace attribute {
class ISearchContext {
public:
using UP = std::unique_ptr<ISearchContext>;
using DocId = uint32_t;
private:
virtual bool onCmp(DocId docId, int32_t &weight) const = 0;
virtual bool onCmp(DocId docId) const = 0;
public:
virtual ~ISearchContext() {}
virtual unsigned int approximateHits() const = 0;
/**
* Creates an attribute search iterator associated with this
* search context.
*
* @return attribute search iterator
*
* @param matchData the attribute match data used when
* unpacking data for a hit
*
* @param strict whether the iterator should be strict or not
**/
virtual std::unique_ptr<queryeval::SearchIterator>
createIterator(fef::TermFieldMatchData *matchData, bool strict) = 0;
/*
* Create temporary posting lists.
* Should be called before createIterator() is called.
*/
virtual void fetchPostings(bool strict) = 0;
virtual bool valid() const = 0;
virtual Int64Range getAsIntegerTerm() const = 0;
virtual const QueryTermBase &queryTerm() const = 0;
virtual const vespalib::string &attributeName() const = 0;
bool cmp(DocId docId, int32_t &weight) const { return onCmp(docId, weight); }
bool cmp(DocId docId) const { return onCmp(docId); }
};
}
}
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