1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
#pragma once
#include <Interpreters/Context_fwd.h>
#include "IDictionary.h"
#include "registerDictionaries.h"
#include <Parsers/ASTCreateQuery.h>
namespace Poco
{
namespace Util
{
class AbstractConfiguration;
}
class Logger;
}
namespace DB
{
/** Create dictionary according to its layout.
*/
class DictionaryFactory : private boost::noncopyable
{
public:
static DictionaryFactory & instance();
/// Create dictionary from AbstractConfiguration parsed
/// from xml-file on filesystem.
DictionaryPtr create(
const std::string & name,
const Poco::Util::AbstractConfiguration & config,
const std::string & config_prefix,
ContextPtr global_context,
bool created_from_ddl) const;
/// Create dictionary from DDL-query
DictionaryPtr create(const std::string & name,
const ASTCreateQuery & ast,
ContextPtr global_context) const;
using LayoutCreateFunction = std::function<DictionaryPtr(
const std::string & name,
const DictionaryStructure & dict_struct,
const Poco::Util::AbstractConfiguration & config,
const std::string & config_prefix,
DictionarySourcePtr source_ptr,
ContextPtr global_context,
bool created_from_ddl)>;
bool isComplex(const std::string & layout_type) const;
/// If the argument `layout_type` is not complex layout and has corresponding complex layout,
/// change `layout_type` to corresponding complex and return true; otherwise do nothing and return false.
bool convertToComplex(std::string & layout_type) const;
void registerLayout(const std::string & layout_type, LayoutCreateFunction create_layout, bool is_layout_complex, bool has_layout_complex = true);
private:
struct RegisteredLayout
{
LayoutCreateFunction layout_create_function;
bool is_layout_complex;
bool has_layout_complex;
};
using LayoutRegistry = std::unordered_map<std::string, RegisteredLayout>;
LayoutRegistry registered_layouts;
};
}
|
