|
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
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
#ifndef CondCore_CondDB_GTProxy_h
#define CondCore_CondDB_GTProxy_h
//
// Package: CondDB
// Class : GTProxy
//
/**\class GTProxy GTProxy.h CondCore/CondDB/interface/GTProxy.h
Description: service for read/only access to the condition Global Tags.
*/
//
// Author: Giacomo Govi
// Created: Jul 2013
//
#include "CondCore/CondDB/interface/Time.h"
#include "CondCore/CondDB/interface/Types.h"
//
#include <boost/date_time/posix_time/posix_time.hpp>
namespace cond {
namespace persistency {
// required to handle the tag overriding
std::string fullyQualifiedTag(const std::string& tag, const std::string& connectionString);
std::pair<std::string, std::string> parseTag(const std::string& tag);
class SessionImpl;
class GTProxyData;
// value semantics. to be used WITHIN the parent session transaction ( therefore the session should be kept alive ).
class GTProxy {
public:
typedef std::vector<std::tuple<std::string, std::string, std::string> > GTContainer;
public:
// more or less compliant with typical iterator semantics...
class Iterator {
public:
// C++17 compliant iterator definition
using iterator_category = std::input_iterator_tag;
using value_type = cond::GTEntry_t;
using difference_type = void; // Not used
using pointer = void; // Not used
using reference = void; // Not used
//
Iterator();
explicit Iterator(GTContainer::const_iterator current);
Iterator(const Iterator& rhs);
//
Iterator& operator=(const Iterator& rhs);
// returns a VALUE not a reference!
cond::GTEntry_t operator*();
//
Iterator& operator++();
Iterator operator++(int);
//
bool operator==(const Iterator& rhs) const;
bool operator!=(const Iterator& rhs) const;
private:
GTContainer::const_iterator m_current;
};
public:
GTProxy();
// the only way to construct it from scratch...
explicit GTProxy(const std::shared_ptr<SessionImpl>& session);
//
GTProxy(const GTProxy& rhs);
//
GTProxy& operator=(const GTProxy& rhs);
// loads in memory the gtag information and the tags. to be resurrected after the changeover.
//void load( const std::string& gtName );
// overloading for pre- and post-fix. Used in the ORA implementation
void load(const std::string& gtName, const std::string& preFix = "", const std::string& postFix = "");
// reset the data in memory and execute again the queries for the current tag
void reload();
// clear all the iov data in memory
void reset();
std::string name() const;
cond::Time_t validity() const;
boost::posix_time::ptime snapshotTime() const;
// start the iteration.
Iterator begin() const;
//
Iterator end() const;
//
int size() const;
private:
void checkTransaction(const std::string& ctx);
private:
std::shared_ptr<GTProxyData> m_data;
std::shared_ptr<SessionImpl> m_session;
};
} // namespace persistency
} // namespace cond
#endif
|