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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 "docsum_field_writer.h"
#include "docsumstore.h"
#include "juniperproperties.h"
#include "resultclass.h"
#include "resultconfig.h"
#include <vespa/vespalib/stllike/string.h>
namespace search { class IAttributeManager; }
namespace vespalib { class Slime; }
namespace search::docsummary {
static constexpr uint32_t SLIME_MAGIC_ID = 0x55555555;
/**
* Interface for writing a docsum payload (in Slime) for a given document.
*/
class IDocsumWriter
{
public:
using Inserter = vespalib::slime::Inserter;
struct ResolveClassInfo {
bool all_fields_generated;
const ResultClass* res_class;
ResolveClassInfo()
: all_fields_generated(false),
res_class(nullptr)
{ }
};
virtual ~IDocsumWriter() = default;
virtual void initState(const search::IAttributeManager & attrMan, GetDocsumsState& state, const ResolveClassInfo& rci) = 0;
virtual void insertDocsum(const ResolveClassInfo & rci, uint32_t docid, GetDocsumsState& state,
IDocsumStore &docinfos, Inserter & target) = 0;
virtual ResolveClassInfo resolveClassInfo(vespalib::stringref class_name,
const vespalib::hash_set<vespalib::string>& fields) const = 0;
};
//--------------------------------------------------------------------------
class DynamicDocsumWriter : public IDocsumWriter
{
private:
std::unique_ptr<ResultConfig> _resultConfig;
public:
DynamicDocsumWriter(std::unique_ptr<ResultConfig> config);
DynamicDocsumWriter(const DynamicDocsumWriter &) = delete;
DynamicDocsumWriter& operator=(const DynamicDocsumWriter &) = delete;
~DynamicDocsumWriter() override;
const ResultConfig *GetResultConfig() { return _resultConfig.get(); }
void initState(const search::IAttributeManager & attrMan, GetDocsumsState& state, const ResolveClassInfo& rci) override;
void insertDocsum(const ResolveClassInfo & outputClassInfo, uint32_t docid, GetDocsumsState& state,
IDocsumStore &docinfos, Inserter & inserter) override;
ResolveClassInfo resolveClassInfo(vespalib::stringref class_name,
const vespalib::hash_set<vespalib::string>& fields) const override;
};
}
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