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97f2a2213e
* Move some code outside dbms/src folder * Fix paths
52 lines
1.3 KiB
C++
52 lines
1.3 KiB
C++
#pragma once
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#include <memory>
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#include "Entries.h"
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// Iterates over all name entries in data source
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class ILanguageRegionsNamesReader
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{
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public:
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virtual bool readNext(RegionNameEntry & entry) = 0;
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virtual ~ILanguageRegionsNamesReader() {}
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};
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using ILanguageRegionsNamesReaderPtr = std::unique_ptr<ILanguageRegionsNamesReader>;
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// Regions names data source for one language
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class ILanguageRegionsNamesDataSource
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{
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public:
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// data modified since last createReader invocation
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virtual bool isModified() const = 0;
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// Upper bound on total length of all names
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virtual size_t estimateTotalSize() const = 0;
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virtual ILanguageRegionsNamesReaderPtr createReader() = 0;
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virtual std::string getLanguage() const = 0;
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virtual std::string getSourceName() const = 0;
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virtual ~ILanguageRegionsNamesDataSource() {}
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};
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using ILanguageRegionsNamesDataSourcePtr = std::unique_ptr<ILanguageRegionsNamesDataSource>;
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// Provides regions names data sources for different languages
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class IRegionsNamesDataProvider
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{
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public:
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/// Returns nullptr if the language data does not exist.
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virtual ILanguageRegionsNamesDataSourcePtr getLanguageRegionsNamesSource(const std::string & language) const = 0;
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virtual ~IRegionsNamesDataProvider() {}
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};
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using IRegionsNamesDataProviderPtr = std::unique_ptr<IRegionsNamesDataProvider>;
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