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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 "attributememoryfilewriter.h"
#include "iattributesavetarget.h"
#include <vespa/searchlib/common/tunefileinfo.h>
#include <vespa/vespalib/stllike/hash_fun.h>
#include <memory>
#include <unordered_map>
namespace search::common { class FileHeaderContext; }
namespace search {
class AttributeVector;
/**
* Class used to save an attribute vector to memory buffer(s).
**/
class AttributeMemorySaveTarget : public IAttributeSaveTarget {
private:
using FileWriterUP = std::unique_ptr<AttributeMemoryFileWriter>;
struct WriterEntry {
FileWriterUP writer;
vespalib::string desc;
WriterEntry(FileWriterUP writer_in, const vespalib::string& desc_in)
: writer(std::move(writer_in)), desc(desc_in) {}
};
using WriterMap = std::unordered_map<vespalib::string, WriterEntry, vespalib::hash<vespalib::string>>;
AttributeMemoryFileWriter _datWriter;
AttributeMemoryFileWriter _idxWriter;
AttributeMemoryFileWriter _weightWriter;
AttributeMemoryFileWriter _udatWriter;
WriterMap _writers;
public:
AttributeMemorySaveTarget();
~AttributeMemorySaveTarget() override;
/**
* Write the underlying buffer(s) to file(s).
**/
bool writeToFile(const TuneFileAttributes &tuneFileAttributes,
const common::FileHeaderContext &fileHeaderContext);
bool setup() override { return true; }
void close() override {}
IAttributeFileWriter &datWriter() override;
IAttributeFileWriter &idxWriter() override;
IAttributeFileWriter &weightWriter() override;
IAttributeFileWriter &udatWriter() override;
bool setup_writer(const vespalib::string& file_suffix,
const vespalib::string& desc) override;
IAttributeFileWriter& get_writer(const vespalib::string& file_suffix) override;
};
} // namespace search
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