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52 lines
1.2 KiB
C++
52 lines
1.2 KiB
C++
#pragma once
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#include <DB/Dictionaries/IDictionarySource.h>
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namespace DB
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{
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/// Allows loading dictionaries from executable
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class ExecutableDictionarySource final : public IDictionarySource
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{
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static constexpr auto max_block_size = 8192;
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public:
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ExecutableDictionarySource(const std::string & name, const std::string & format, Block & sample_block,
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const Context & context);
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ExecutableDictionarySource(const ExecutableDictionarySource & other);
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BlockInputStreamPtr loadAll() override;
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BlockInputStreamPtr loadIds(const std::vector<UInt64> & ids) override;
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BlockInputStreamPtr loadKeys(
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const ConstColumnPlainPtrs & key_columns, const std::vector<std::size_t> & requested_rows) override;
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bool isModified() const override;
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bool supportsSelectiveLoad() const override;
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DictionarySourcePtr clone() const override;
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std::string toString() const override;
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private:
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Logger * log = &Logger::get("ExecutableDictionarySource");
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static std::string quoteForLike(const std::string s);
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LocalDateTime getLastModification() const;
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const std::string name;
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const std::string format;
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Block sample_block;
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const Context & context;
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const std::string load_all_query;
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LocalDateTime last_modification;
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};
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}
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