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47 lines
1.1 KiB
C++
47 lines
1.1 KiB
C++
#pragma once
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#include <Core/Block.h>
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#include <DataStreams/IProfilingBlockInputStream.h>
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#include <Dictionaries/ExternalResultDescription.h>
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wunused-parameter"
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#include <Poco/Data/Session.h>
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#include <Poco/Data/Statement.h>
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#include <Poco/Data/RecordSet.h>
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#pragma GCC diagnostic pop
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#include <string>
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namespace DB
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{
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/// Allows processing results of a query to ODBC source as a sequence of Blocks, simplifies chaining
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class ODBCBlockInputStream final : public IProfilingBlockInputStream
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{
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public:
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ODBCBlockInputStream(
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Poco::Data::Session && session, const std::string & query_str, const Block & sample_block,
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const size_t max_block_size);
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String getName() const override { return "ODBC"; }
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Block getHeader() const override { return description.sample_block; };
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private:
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Block readImpl() override;
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Poco::Data::Session session;
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Poco::Data::Statement statement;
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Poco::Data::RecordSet result;
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Poco::Data::RecordSet::Iterator iterator;
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const size_t max_block_size;
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ExternalResultDescription description;
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Poco::Logger * log;
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};
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}
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