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Viewing changes to drizzled/field/null.h

  • Committer: Olaf van der Spek
  • Date: 2011-06-16 21:54:21 UTC
  • mfrom: (2338 drizzle)
  • mto: (2318.6.3 refactor7)
  • mto: This revision was merged to the branch mainline in revision 2340.
  • Revision ID: olafvdspek@gmail.com-20110616215421-8jjy2xlyqck6hjtc
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drizzled/field/null.h
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#include <drizzled/field/str.h>
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namespace drizzled {
 
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namespace drizzled
 
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{
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/*
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 * Everything saved in this will disappear. It will always return NULL
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 */
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class Field_null : public Field_str
 
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class Field_null :public Field_str
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{
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  static unsigned char null;
 
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  static unsigned char null[1];
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public:
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  using Field::store;
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  using Field::cmp;
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  using Field::val_int;
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  Field_null(unsigned char *ptr_arg, uint32_t len_arg, const char *field_name_arg) :
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    Field_str(ptr_arg, len_arg, &null, 1, field_name_arg, &my_charset_bin)
 
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  Field_null(unsigned char *ptr_arg,
 
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             uint32_t len_arg,
 
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             const char *field_name_arg) :
 
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    Field_str(ptr_arg,
 
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              len_arg,
 
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              null,
 
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              1,
 
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              field_name_arg,
 
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              &my_charset_bin)
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  {}
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  enum_field_types type() const
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  {
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    return DRIZZLE_TYPE_NULL;
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  }
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  int store(const char *, uint32_t, const charset_info_st * const)
 
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  int  store(const char *, uint32_t, const charset_info_st * const)
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  {
 
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    null[0]= 1;
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    return 0;
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  }
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  int store(double)
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  {
 
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    null[0]= 1;
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    return 0;
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  }
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  int store(int64_t, bool)
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  {
 
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    null[0]= 1;
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    return 0;
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  }
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  int store_decimal(const type::Decimal *)
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  {
 
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    null[0]= 1;
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    return 0;
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  }
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  int reset()
 
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  int reset(void)
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  {
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    return 0;
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  }
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  double val_real() const
 
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  double val_real(void) const
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  {
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    return 0.0;
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  }
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  int64_t val_int() const
 
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  int64_t val_int(void) const
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  {
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    return 0;
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  }
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};
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} /* namespace drizzled */
 
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