1 | #pragma once |
2 | |
3 | #include <Databases/DatabasesCommon.h> |
4 | |
5 | |
6 | namespace Poco { class Logger; } |
7 | |
8 | |
9 | namespace DB |
10 | { |
11 | |
12 | /** A non-persistent database to store temporary data. |
13 | * It doesn't make any manipulations with filesystem. |
14 | * All tables are created by calling code. |
15 | * TODO: Maybe DatabaseRuntime is more suitable class name. |
16 | */ |
17 | class DatabaseMemory : public DatabaseWithOwnTablesBase |
18 | { |
19 | public: |
20 | DatabaseMemory(const String & name_); |
21 | |
22 | String getEngineName() const override { return "Memory" ; } |
23 | |
24 | void createTable( |
25 | const Context & context, |
26 | const String & table_name, |
27 | const StoragePtr & table, |
28 | const ASTPtr & query) override; |
29 | |
30 | void removeTable( |
31 | const Context & context, |
32 | const String & table_name) override; |
33 | |
34 | ASTPtr getCreateDatabaseQuery() const override; |
35 | }; |
36 | |
37 | } |
38 | |