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drizzled/item/null.h
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#ifndef DRIZZLED_ITEM_NULL_H
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#define DRIZZLED_ITEM_NULL_H
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#include "drizzled/item/basic_constant.h"
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namespace drizzled
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{
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class Item_null :public Item_basic_constant
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{
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public:
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  my_decimal *val_decimal(my_decimal *);
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  int save_in_field(Field *field, bool no_conversions);
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  int save_safe_in_field(Field *field);
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  bool send(plugin::Client *client, String *str);
 
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  bool send(Protocol *protocol, String *str);
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  enum Item_result result_type () const { return STRING_RESULT; }
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  enum_field_types field_type() const   { return DRIZZLE_TYPE_NULL; }
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  bool basic_const_item() const { return 1; }
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  virtual void print(String *str, enum_query_type);
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  Item *safe_charset_converter(const CHARSET_INFO * const tocs);
 
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  bool check_vcol_func_processor(unsigned char *)
 
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  { return false; }
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};
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class Item_null_result :public Item_null
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  {
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    save_in_field(result_field, no_conversions);
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  }
 
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  bool check_vcol_func_processor(unsigned char *)
 
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  { return true; }
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};
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} /* namespace drizzled */
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#endif /* DRIZZLED_ITEM_NULL_H */