Drizzled Public API Documentation

int32.h
1 /* - mode: c++ c-basic-offset: 2; indent-tabs-mode: nil; -*-
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3  *
4  * Copyright (C) 2008 MySQL
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6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
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11  * This program is distributed in the hope that it will be useful,
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14  * GNU General Public License for more details.
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20 
21 #pragma once
22 
23 #include <drizzled/field/num.h>
24 
25 namespace drizzled
26 {
27 
28 namespace field
29 {
30 
31 class Int32 :public Field_num {
32 public:
33 
34  using Field::val_int;
35  using Field::val_str;
36  using Field::cmp;
37  using Field::pack;
38  using Field::store;
39  using Field::unpack;
40 
41  Int32(unsigned char *ptr_arg, uint32_t len_arg, unsigned char *null_ptr_arg,
42  unsigned char null_bit_arg,
43  enum utype unireg_check_arg,
44  const char *field_name_arg) :
45  Field_num(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
46  unireg_check_arg, field_name_arg,
47  0, false, false)
48  {}
49 
50  Int32(uint32_t len_arg,bool maybe_null_arg, const char *field_name_arg,
51  bool unsigned_arg) :
52  Field_num((unsigned char*) 0, len_arg, maybe_null_arg ? (unsigned char*) "": 0,0,
53  NONE, field_name_arg,0,0,unsigned_arg)
54  {}
55 
56  enum Item_result result_type () const { return INT_RESULT; }
57  enum_field_types type() const { return DRIZZLE_TYPE_LONG;}
58  enum ha_base_keytype key_type() const
59  { return unsigned_flag ? HA_KEYTYPE_ULONG_INT : HA_KEYTYPE_LONG_INT; }
60  int store(const char *to,uint32_t length, const charset_info_st * const charset);
61  int store(double nr);
62  int store(int64_t nr, bool unsigned_val);
63  int reset(void) { ptr[0]=ptr[1]=ptr[2]=ptr[3]=0; return 0; }
64  double val_real(void) const;
65  int64_t val_int(void) const;
66  String *val_str(String*,String *) const;
67  int cmp(const unsigned char *,const unsigned char *);
68  void sort_string(unsigned char *buff,uint32_t length);
69  uint32_t pack_length() const { return 4; }
70  uint32_t max_display_length() { return MY_INT32_NUM_DECIMAL_DIGITS; }
71  virtual unsigned char *pack(unsigned char* to, const unsigned char *from,
72  uint32_t max_length,
73  bool low_byte_first);
74 
75  virtual const unsigned char *unpack(unsigned char* to, const unsigned char *from,
76  uint32_t param_data,
77  bool low_byte_first);
78 };
79 
80 } /* namespace field */
81 } /* namespace drizzled */
82 
83