2017-04-28 18:33:31 +00:00
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#pragma once
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2018-08-24 05:37:06 +00:00
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2019-01-23 14:48:50 +00:00
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#include <DataStreams/IBlockInputStream.h>
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2017-04-28 18:33:31 +00:00
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2017-05-26 16:08:56 +00:00
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namespace DB
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2017-04-28 18:33:31 +00:00
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{
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2019-01-23 14:48:50 +00:00
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class DictionaryBlockInputStreamBase : public IBlockInputStream
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2017-04-28 18:33:31 +00:00
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{
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protected:
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2019-08-03 11:02:40 +00:00
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DictionaryBlockInputStreamBase(size_t rows_count_, size_t max_block_size_);
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2017-04-28 18:33:31 +00:00
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2017-05-26 16:08:56 +00:00
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virtual Block getBlock(size_t start, size_t length) const = 0;
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2018-02-18 03:23:48 +00:00
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Block getHeader() const override;
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2018-01-06 18:10:44 +00:00
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2017-04-28 18:33:31 +00:00
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private:
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2017-05-26 16:08:56 +00:00
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const size_t rows_count;
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2019-02-18 18:51:46 +00:00
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const size_t max_block_size;
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2018-01-06 18:10:44 +00:00
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size_t next_row = 0;
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2017-04-28 18:33:31 +00:00
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Block readImpl() override;
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};
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2017-05-26 16:08:56 +00:00
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}
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