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00020 #pragma once
00021
00022 #include <drizzled/common.h>
00023 #include <drizzled/item_result.h>
00024
00025 namespace drizzled
00026 {
00027
00028 class Item;
00029 class Field;
00030 class Hybrid_type;
00031 class String;
00032
00033 namespace type {
00034 class Decimal;
00035 }
00036
00037
00038
00039 class Hybrid_type_traits
00040 {
00041 public:
00042
00043 virtual Item_result type() const;
00044
00045 virtual void
00046 fix_length_and_dec(Item *item, Item *arg) const;
00047
00048
00049 virtual void set_zero(Hybrid_type *val) const;
00050 virtual void add(Hybrid_type *val, Field *f) const;
00051 virtual void div(Hybrid_type *val, uint64_t u) const;
00052
00053 virtual int64_t val_int(Hybrid_type *val,
00054 bool unsigned_flag) const;
00055 virtual double val_real(Hybrid_type *val) const;
00056 virtual type::Decimal *val_decimal(Hybrid_type *val, type::Decimal *buf) const;
00057 virtual String *val_str(Hybrid_type *val, String *buf,
00058 uint8_t decimals) const;
00059
00060 static const Hybrid_type_traits *instance();
00061 Hybrid_type_traits();
00062 virtual ~Hybrid_type_traits();
00063
00064 };
00065
00066 }
00067