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Viewing changes to drizzled/function/str/conv_charset.h

  • Committer: Brian Aker
  • Date: 2011-02-12 08:10:17 UTC
  • mto: This revision was merged to the branch mainline in revision 2161.
  • Revision ID: brian@tangent.org-20110212081017-7793i41ybt7gp5ty
More removal of session from includes.

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drizzled/function/str/conv_charset.h
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 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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 */
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#pragma once
 
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#ifndef DRIZZLED_FUNCTION_STR_CONV_CHARSET_H
 
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#define DRIZZLED_FUNCTION_STR_CONV_CHARSET_H
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#include <drizzled/function/str/strfunc.h>
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namespace drizzled {
 
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namespace drizzled
 
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{
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class Item_func_conv_charset :public Item_str_func
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{
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  bool use_cached_value;
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public:
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  bool safe;
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  const charset_info_st *conv_charset; // keep it public
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  Item_func_conv_charset(Item *a, const charset_info_st * const cs) :Item_str_func(a)
 
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  const CHARSET_INFO *conv_charset; // keep it public
 
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  Item_func_conv_charset(Item *a, const CHARSET_INFO * const cs) :Item_str_func(a)
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  { conv_charset= cs; use_cached_value= 0; safe= 0; }
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  Item_func_conv_charset(Item *a, const charset_info_st * const cs, bool cache_if_const)
 
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  Item_func_conv_charset(Item *a, const CHARSET_INFO * const cs, bool cache_if_const)
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    :Item_str_func(a)
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  {
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    assert(args[0]->fixed);
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    conv_charset= cs;
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    if (cache_if_const && args[0]->const_item())
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    {
 
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      size_t errors= 0;
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      String tmp, *str= args[0]->val_str(&tmp);
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      if (!str)
 
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      if (!str || str_value.copy(str->ptr(), str->length(),
 
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                                 str->charset(), conv_charset, &errors))
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        null_value= 1;
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      else
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        str_value.copy(str->ptr(), str->length(), conv_charset);
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      use_cached_value= 1;
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      str_value.mark_as_const();
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      safe= true;
 
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      safe= (errors == 0);
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    }
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    else
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    {
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      use_cached_value= false;
 
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      use_cached_value= 0;
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      /*
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        Conversion from and to "binary" is safe.
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        Conversion to Unicode is safe.
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  String *val_str(String *);
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  void fix_length_and_dec();
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  const char *func_name() const { return "convert"; }
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  virtual void print(String *str);
 
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  virtual void print(String *str, enum_query_type query_type);
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};
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} /* namespace drizzled */
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#endif /* DRIZZLED_FUNCTION_STR_CONV_CHARSET_H */