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min_max.h
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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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*
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* Copyright (C) 2008 Sun Microsystems, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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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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#include <drizzled/function/func.h>
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namespace
drizzled
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{
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class
Item_func_min_max
:
public
Item_func
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{
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Item_result cmp_type;
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String
tmp_value;
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int
cmp_sign;
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/* TRUE <=> arguments should be compared in the DATETIME context. */
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bool
compare_as_dates;
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/* An item used for issuing warnings while string to DATETIME conversion. */
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Item
*datetime_item;
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protected
:
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enum_field_types cached_field_type;
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public
:
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Item_func_min_max
(
List<Item>
&list,
int
cmp_sign_arg) :
Item_func
(list),
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cmp_type(INT_RESULT), cmp_sign(cmp_sign_arg), compare_as_dates(
false
),
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datetime_item(0) {}
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double
val_real
();
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int64_t
val_int
();
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String
*
val_str
(
String
*);
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type::Decimal
*
val_decimal
(
type::Decimal
*);
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void
fix_length_and_dec();
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enum
Item_result result_type ()
const
{
return
cmp_type; }
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bool
result_as_int64_t
() {
return
compare_as_dates; };
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uint32_t cmp_datetimes(uint64_t *value);
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enum_field_types field_type()
const
{
return
cached_field_type; }
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};
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class
Item_func_min
:
public
Item_func_min_max
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{
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public
:
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Item_func_min
(
List<Item>
&list) :
Item_func_min_max
(list,1) {}
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const
char
*func_name()
const
{
return
"least"
; }
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};
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class
Item_func_max
:
public
Item_func_min_max
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{
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public
:
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Item_func_max
(
List<Item>
&list) :
Item_func_min_max
(list,-1) {}
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const
char
*func_name()
const
{
return
"greatest"
; }
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};
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}
/* namespace drizzled */
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drizzled::Item_func_min_max::val_real
double val_real()
Definition:
min_max.cc:206
drizzled::Item_func_min_max::val_str
String * val_str(String *)
Definition:
min_max.cc:123
drizzled::Item_func_min_max::result_as_int64_t
bool result_as_int64_t()
Definition:
min_max.h:48
drizzled::Item_func_min
Definition:
min_max.h:53
drizzled::type::Decimal
Definition:
decimal.h:183
drizzled::Item_func_min_max
Definition:
min_max.h:27
drizzled::Item_func_max
Definition:
min_max.h:60
drizzled::Item_func_min_max::val_decimal
type::Decimal * val_decimal(type::Decimal *)
Definition:
min_max.cc:260
drizzled::Item
Definition:
item.h:56
drizzled::Item_func
Definition:
func.h:37
drizzled::Item_func_min_max::val_int
int64_t val_int()
Definition:
min_max.cc:233
drizzled::String
Definition:
sql_string.h:57
drizzled::List
Definition:
sql_list.h:324
drizzled
function
min_max.h
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