dd_utility.h

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#ifndef DD__UTILITY_INCLUDED
#define DD__UTILITY_INCLUDED
 
#include "sql/dd/string_type.h"  // dd::String_type
 
struct CHARSET_INFO;
class THD;
 
namespace dd {
 
///////////////////////////////////////////////////////////////////////////
 
/**
  Normalize (or transform) the multibyte character set string.
 
  The normalized string contains the weight of the each character of the source
  string. The normalized strings are suitable for the comparisons (strings
  yields the correct collation order).
 
  @param      cs                          Character set.
  @param      src                         Source string.
  @param[out] normalized_str_buf          Buffer to store the normalized string.
  @param      normalized_str_buf_length   Size of the normalized_str_buf.
 
  @returns length of the normalized string. 0 is returned if buffer length is
  insufficient to store the normalized string.
*/
size_t normalize_string(const CHARSET_INFO *cs, const String_type &src,
                        char *normalized_str_buf,
                        size_t normalized_str_buf_length);
 
/**
  Check if DDSE (Data Dictionary Storage Engine) is in
  readonly mode.
 
  @param thd                 Thread
  @param schema_name         Abbreviation or name of schema (I_S, P_S, ndbinfo)
                             for use in warning message output; nullptr if no
                             warning should be emitted
 
  @returns false on success, otherwise true.
*/
bool check_if_server_ddse_readonly(THD *thd, const char *schema_name = nullptr);
 
///////////////////////////////////////////////////////////////////////////
 
}  // namespace dd
 
#endif