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50 lines
1.3 KiB
C++
50 lines
1.3 KiB
C++
#pragma once
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#include <ext/shared_ptr_helper.h>
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#include <Storages/IStorage.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/SessionPool.h>
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#pragma GCC diagnostic pop
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namespace DB
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{
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/** Implements storage in the ODBC database.
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* Use ENGINE = odbc(connection_string, table_name)
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* Example ENGINE = odbc('dsn=test', table)
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* Read only.
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*/
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class StorageODBC : public ext::shared_ptr_helper<StorageODBC>, public IStorage
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{
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public:
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StorageODBC(
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const std::string & name,
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const std::string & connection_string,
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const std::string & remote_database_name,
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const std::string & remote_table_name,
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const ColumnsDescription & columns_);
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std::string getName() const override { return "ODBC"; }
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std::string getTableName() const override { return name; }
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BlockInputStreams read(
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const Names & column_names,
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const SelectQueryInfo & query_info,
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const Context & context,
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QueryProcessingStage::Enum & processed_stage,
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size_t max_block_size,
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unsigned num_streams) override;
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private:
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std::string name;
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std::string remote_database_name;
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std::string remote_table_name;
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std::shared_ptr<Poco::Data::SessionPool> pool;
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};
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}
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