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65 lines
1.6 KiB
C++
65 lines
1.6 KiB
C++
#pragma once
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#include "config_core.h"
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#if USE_MYSQL
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#include <ext/shared_ptr_helper.h>
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#include <Storages/IStorage.h>
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#include <mysqlxx/Pool.h>
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namespace DB
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{
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/** Implements storage in the MySQL database.
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* Use ENGINE = mysql(host_port, database_name, table_name, user_name, password)
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* Read only.
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*/
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class StorageMySQL : public ext::shared_ptr_helper<StorageMySQL>, public IStorage
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{
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public:
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StorageMySQL(
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const std::string & database_name_,
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const std::string & table_name_,
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mysqlxx::Pool && pool_,
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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 bool replace_query_,
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const std::string & on_duplicate_clause_,
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const ColumnsDescription & columns_,
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const Context & context_);
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std::string getName() const override { return "MySQL"; }
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std::string getTableName() const override { return table_name; }
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std::string getDatabaseName() const override { return database_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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BlockOutputStreamPtr write(const ASTPtr & query, const Context & context) override;
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private:
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friend class StorageMySQLBlockOutputStream;
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std::string table_name;
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std::string database_name;
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std::string remote_database_name;
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std::string remote_table_name;
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bool replace_query;
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std::string on_duplicate_clause;
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mysqlxx::Pool pool;
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Context global_context;
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};
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}
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#endif
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