Drizzled Public API Documentation

set_user_var.h
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4  * Copyright (C) 2008 Sun Microsystems, Inc.
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18  */
19 
20 #pragma once
21 
22 #include <drizzled/function/func.h>
23 
24 namespace drizzled {
25 
26 /* Handling of user definable variables */
27 
29 {
30  enum Item_result cached_result_type;
31  user_var_entry *entry;
32  char buffer[MAX_FIELD_WIDTH];
33  String value;
34  type::Decimal decimal_buff;
35  bool null_item;
36  union
37  {
38  int64_t vint;
39  double vreal;
40  String *vstr;
41  type::Decimal *vdec;
42  } save_result;
43 
44 public:
45  str_ref name; // keep it public
47  Item_func(b), cached_result_type(INT_RESULT), name(a)
48  {}
49  Functype functype() const { return SUSERVAR_FUNC; }
50  double val_real();
51  int64_t val_int();
52  String *val_str(String *str);
54  double val_result();
55  int64_t val_int_result();
56  String *str_result(String *str);
57  type::Decimal *val_decimal_result(type::Decimal *);
58  void update_hash(data_ref, Item_result type, const charset_info_st* cs, Derivation dv, bool unsigned_arg);
59  void send(plugin::Client *client, String *str_arg);
60  void make_field(SendField *tmp_field);
61  bool check(bool use_result_field);
62  void update();
63  Item_result result_type () const { return cached_result_type; }
64  bool fix_fields(Session *session, Item **ref);
65  void fix_length_and_dec();
66  virtual void print(String *str);
67 
68  const char *func_name() const { return "set_user_var"; }
69  int save_in_field(Field *field, bool no_conversions,
70  bool can_use_result_field);
71  int save_in_field(Field *field, bool no_conversions)
72  {
73  return save_in_field(field, no_conversions, 1);
74  }
75  void save_org_in_field(Field *field) { (void)save_in_field(field, 1, 0); }
76  bool register_field_in_read_map(unsigned char *arg);
77 };
78 
79 } /* namespace drizzled */
80 
bool check(bool use_result_field)
TODO: Rename this file - func.h is stupid.
void send(plugin::Client *client, String *str_arg)
type::Decimal * val_decimal(type::Decimal *)
Definition: wakeup.h:27
virtual void print(String *str)
String * val_str(String *str)
Derivation
Definition: enum.h:38