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55 lines
1.4 KiB
C++
55 lines
1.4 KiB
C++
#pragma once
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#include <Core/Types.h>
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#include <Parsers/ASTFunction.h>
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#include <Parsers/IAST.h>
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#include <Storages/IStorage_fwd.h>
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#include <Databases/IDatabase.h>
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#include <mutex>
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/// General functionality for several different database engines.
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namespace DB
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{
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class Context;
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/// A base class for databases that manage their own list of tables.
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class DatabaseWithOwnTablesBase : public IDatabase
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{
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public:
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bool isTableExist(
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const Context & context,
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const String & table_name) const override;
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StoragePtr tryGetTable(
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const Context & context,
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const String & table_name) const override;
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bool empty(const Context & context) const override;
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void attachTable(const String & table_name, const StoragePtr & table) override;
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StoragePtr detachTable(const String & table_name) override;
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DatabaseTablesIteratorPtr getTablesIterator(const Context & context, const FilterByNameFunction & filter_by_table_name) override;
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void shutdown() override;
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virtual ~DatabaseWithOwnTablesBase() override;
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protected:
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mutable std::mutex mutex;
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Tables tables;
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Dictionaries dictionaries;
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Poco::Logger * log;
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DatabaseWithOwnTablesBase(const String & name_, const String & logger);
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void attachTableUnlocked(const String & table_name, const StoragePtr & table);
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StoragePtr detachTableUnlocked(const String & table_name);
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};
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}
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