00001
00002
00003
00004
00005
00006
00007
00008
00009
00010
00011
00012
00013
00014
00015
00016
00017
00018
00019
00020
00021 #pragma once
00022
00023 #include <drizzled/field/num.h>
00024
00025 namespace drizzled
00026 {
00027
00028 namespace field
00029 {
00030
00031 class Int32 :public Field_num {
00032 public:
00033
00034 using Field::val_int;
00035 using Field::val_str;
00036 using Field::cmp;
00037 using Field::pack;
00038 using Field::store;
00039 using Field::unpack;
00040
00041 Int32(unsigned char *ptr_arg, uint32_t len_arg, unsigned char *null_ptr_arg,
00042 unsigned char null_bit_arg,
00043 enum utype unireg_check_arg,
00044 const char *field_name_arg) :
00045 Field_num(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
00046 unireg_check_arg, field_name_arg,
00047 0, false, false)
00048 {}
00049
00050 Int32(uint32_t len_arg,bool maybe_null_arg, const char *field_name_arg,
00051 bool unsigned_arg) :
00052 Field_num((unsigned char*) 0, len_arg, maybe_null_arg ? (unsigned char*) "": 0,0,
00053 NONE, field_name_arg,0,0,unsigned_arg)
00054 {}
00055
00056 enum Item_result result_type () const { return INT_RESULT; }
00057 enum_field_types type() const { return DRIZZLE_TYPE_LONG;}
00058 enum ha_base_keytype key_type() const
00059 { return unsigned_flag ? HA_KEYTYPE_ULONG_INT : HA_KEYTYPE_LONG_INT; }
00060 int store(const char *to,uint32_t length, const CHARSET_INFO * const charset);
00061 int store(double nr);
00062 int store(int64_t nr, bool unsigned_val);
00063 int reset(void) { ptr[0]=ptr[1]=ptr[2]=ptr[3]=0; return 0; }
00064 double val_real(void) const;
00065 int64_t val_int(void) const;
00066 String *val_str(String*,String *) const;
00067 int cmp(const unsigned char *,const unsigned char *);
00068 void sort_string(unsigned char *buff,uint32_t length);
00069 uint32_t pack_length() const { return 4; }
00070 void sql_type(String &str) const;
00071 uint32_t max_display_length() { return MY_INT32_NUM_DECIMAL_DIGITS; }
00072 virtual unsigned char *pack(unsigned char* to, const unsigned char *from,
00073 uint32_t max_length,
00074 bool low_byte_first);
00075
00076 virtual const unsigned char *unpack(unsigned char* to, const unsigned char *from,
00077 uint32_t param_data,
00078 bool low_byte_first);
00079 };
00080
00081 }
00082 }
00083
00084