Function create_hash

sql/item_jsonfunc.cc:5707–5759

static bool create_hash(json_engine_t *value, HASH *items,
                        bool &item_hash_inited,
                        MEM_ROOT *hash_root, MEM_ROOT *current_mem_root,
                        json_engine_t *temp_je, MEM_ROOT_DYNAMIC_ARRAY *stack)
{
  int level= value->stack_p;
  if (my_hash_init(PSI_INSTRUMENT_ME, items, value->s.cs, 0, 0, 0,
                   get_key_name, NULL, 0))
    return true;
  item_hash_inited= true;

  while (json_scan_next(value) == 0 && value->stack_p >= level)
  {
    const uchar *value_start= NULL;
    size_t value_len= 0;
    DYNAMIC_STRING norm_val;

    if (json_read_value(value) ||
        get_current_value(value, value_start, value_len) ||
        init_dynamic_string(&norm_val, NULL, 0, 0))
      return true;

    if (json_normalize(&norm_val, (const char*) value_start,
                       value_len, value->s.cs, current_mem_root,
                       temp_je, stack))
    {
      dynstr_free(&norm_val);
      return true;
    }

    char *new_entry= (char*)alloc_root(hash_root,
                                       norm_val.length+1);
    if (!new_entry)
    {
      dynstr_free(&norm_val);
      return true;
    }
    else
    {
      strncpy(new_entry, norm_val.str, norm_val.length);
      new_entry[norm_val.length]='\0';

      dynstr_free(&norm_val);

      if (my_hash_insert(items, (const uchar *) new_entry))
      {
        my_free(new_entry);
        return true;
      }
    }
  }
  return false;
}


/*