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4c157007f5
Instead of using ExternalLoader::reload() now it's used reloadConfig() which reloads only what necessary. Functions attachDictionary() and detachDictionary() are simplified and have lesser number of parameters. Instead of injecting into LoadablesConfigReader's internals for creating dictionary a temp repository is used.
71 lines
2.0 KiB
C++
71 lines
2.0 KiB
C++
#pragma once
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#include <Databases/DatabasesCommon.h>
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namespace Poco { class Logger; }
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namespace DB
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{
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/** A non-persistent database to store temporary data.
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* It doesn't make any manipulations with filesystem.
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* All tables are created by calling code.
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* TODO: Maybe DatabaseRuntime is more suitable class name.
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*/
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class DatabaseMemory : public DatabaseWithOwnTablesBase
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{
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public:
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DatabaseMemory(String name_);
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String getDatabaseName() const override;
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String getEngineName() const override { return "Memory"; }
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void loadStoredObjects(
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Context & context,
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bool has_force_restore_data_flag) override;
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void createTable(
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const Context & context,
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const String & table_name,
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const StoragePtr & table,
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const ASTPtr & query) override;
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void createDictionary(
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const Context & context,
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const String & dictionary_name,
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const ASTPtr & query) override;
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void attachDictionary(
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const String & name,
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const Context & context) override;
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void removeTable(
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const Context & context,
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const String & table_name) override;
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void removeDictionary(
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const Context & context,
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const String & dictionary_name) override;
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void detachDictionary(
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const String & name,
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const Context & context) override;
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time_t getObjectMetadataModificationTime(const Context & context, const String & table_name) override;
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ASTPtr getCreateTableQuery(const Context & context, const String & table_name) const override;
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ASTPtr getCreateDictionaryQuery(const Context & context, const String & table_name) const override;
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ASTPtr tryGetCreateTableQuery(const Context &, const String &) const override { return nullptr; }
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ASTPtr tryGetCreateDictionaryQuery(const Context &, const String &) const override { return nullptr; }
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ASTPtr getCreateDatabaseQuery(const Context & context) const override;
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private:
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Poco::Logger * log;
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};
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}
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