← Back to branch summary

~drizzle-trunk/drizzle/development

« back to all changes in this revision

Viewing changes to drizzled/functions/unsigned.cc

  • Committer: Mark Atwood
  • Date: 2008-10-16 11:33:16 UTC
  • mto: (520.1.13 drizzle)
  • mto: This revision was merged to the branch mainline in revision 530.
  • Revision ID: mark@fallenpegasus.com-20081016113316-ff6jdt31ck90sjdh
an implemention of the errmsg plugin

Show diffs side-by-side

added added

removed removed

Lines of Context:
drizzled/functions/unsigned.cc
 
1
/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
 
2
 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
 
3
 *
 
4
 *  Copyright (C) 2008 Sun Microsystems
 
5
 *
 
6
 *  This program is free software; you can redistribute it and/or modify
 
7
 *  it under the terms of the GNU General Public License as published by
 
8
 *  the Free Software Foundation; version 2 of the License.
 
9
 *
 
10
 *  This program is distributed in the hope that it will be useful,
 
11
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 
12
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
13
 *  GNU General Public License for more details.
 
14
 *
 
15
 *  You should have received a copy of the GNU General Public License
 
16
 *  along with this program; if not, write to the Free Software
 
17
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
18
 */
 
19
 
 
20
#include <drizzled/server_includes.h>
 
21
#include CSTDINT_H
 
22
#include <drizzled/functions/unsigned.h>
 
23
 
 
24
void Item_func_unsigned::print(String *str, enum_query_type query_type)
 
25
{
 
26
  str->append(STRING_WITH_LEN("cast("));
 
27
  args[0]->print(str, query_type);
 
28
  str->append(STRING_WITH_LEN(" as unsigned)"));
 
29
 
 
30
}
 
31
 
 
32
int64_t Item_func_unsigned::val_int()
 
33
{
 
34
  int64_t value;
 
35
  int error;
 
36
 
 
37
  if (args[0]->cast_to_int_type() == DECIMAL_RESULT)
 
38
  {
 
39
    my_decimal tmp, *dec= args[0]->val_decimal(&tmp);
 
40
    if (!(null_value= args[0]->null_value))
 
41
      my_decimal2int(E_DEC_FATAL_ERROR, dec, 1, &value);
 
42
    else
 
43
      value= 0;
 
44
    return value;
 
45
  }
 
46
  else if (args[0]->cast_to_int_type() != STRING_RESULT ||
 
47
           args[0]->result_as_int64_t())
 
48
  {
 
49
    value= args[0]->val_int();
 
50
    null_value= args[0]->null_value;
 
51
    return value;
 
52
  }
 
53
 
 
54
  value= val_int_from_str(&error);
 
55
  if (error < 0)
 
56
    push_warning(current_thd, DRIZZLE_ERROR::WARN_LEVEL_WARN, ER_UNKNOWN_ERROR,
 
57
                 "Cast to unsigned converted negative integer to it's "
 
58
                 "positive complement");
 
59
  return value;
 
60
}
 
61
 
 
62