Drizzled Public API Documentation

set_var.h
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19 
20 #pragma once
21 
22 #include <boost/shared_ptr.hpp>
23 
24 #include <drizzled/common_fwd.h>
25 #include <drizzled/enum.h>
26 #include <drizzled/lex_string.h>
27 
28 namespace drizzled {
29 
30 /* Classes to support the SET command */
31 
32 
33 /****************************************************************************
34  Variables that are changable runtime are declared using the
35  following classes
36 ****************************************************************************/
37 
38 /****************************************************************************
39  Classes for parsing of the SET command
40 ****************************************************************************/
41 
43 {
44 public:
45  virtual ~set_var_base() {}
46  virtual int check(Session*)= 0; /* To check privileges etc. */
47  virtual int update(Session*)= 0; /* To set the value */
48  /* light check for PS */
49 };
50 
51 /* MySQL internal variables */
52 class set_var : public set_var_base
53 {
54  uint64_t uint64_t_value;
55  std::string str_value;
56 public:
57  sys_var *var;
58  Item *value;
59  sql_var_t type;
60  str_ref base; // for structs
61 
62  set_var(sql_var_t type_arg, sys_var *var_arg, str_ref base_name_arg, Item *value_arg);
63  int check(Session *session);
64  int update(Session *session);
65  void setValue(const std::string &new_value);
66  void setValue(uint64_t new_value);
67  void updateValue();
68 
69  uint64_t getInteger()
70  {
71  return uint64_t_value;
72  }
73 
74 };
75 
76 /* User variables like @my_own_variable */
77 
79 {
80  Item_func_set_user_var *user_var_item;
81 public:
82  explicit set_var_user(Item_func_set_user_var *item) :
83  user_var_item(item)
84  {}
85  int check(Session *session);
86  int update(Session *session);
87 };
88 
89 typedef boost::shared_ptr<set_var_base> SetVarPtr;
90 typedef std::vector<SetVarPtr> SetVarVector;
91 int sql_set_variables(Session *session, const SetVarVector &var_list);
92 
93 } /* namespace drizzled */
94 
int sql_set_variables(Session *session, const SetVarVector &var_list)
Definition: set_var.cc:58
TODO: Rename this file - func.h is stupid.
int update(Session *session)
Definition: set_var.cc:151