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null.cc
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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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#include <config.h>
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#include <drizzled/field.h>
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#include <drizzled/item/null.h>
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#include <drizzled/lex_string.h>
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#include <drizzled/plugin/client.h>
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namespace
drizzled {
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bool
Item_null::eq
(
const
Item
*item,
bool
)
const
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{
return
item->type() == type(); }
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double
Item_null::val_real
()
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{
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// following assert is redundant, because fixed=1 assigned in constructor
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assert(
fixed
== 1);
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null_value
=1;
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return
0.0;
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}
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int64_t
Item_null::val_int
()
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{
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// following assert is redundant, because fixed=1 assigned in constructor
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assert(
fixed
== 1);
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null_value
=1;
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return
0;
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}
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/* ARGSUSED */
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String
*
Item_null::val_str
(
String
*)
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{
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// following assert is redundant, because fixed=1 assigned in constructor
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assert(
fixed
== 1);
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null_value
=1;
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return
0;
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}
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type::Decimal
*
Item_null::val_decimal
(
type::Decimal
*)
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{
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return
0;
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}
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void
Item_null::print
(
String
*str)
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{
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str->append(STRING_WITH_LEN(
"NULL"
));
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}
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Item
*Item_null::safe_charset_converter(
const
charset_info_st
*
const
tocs)
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{
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collation.set(tocs);
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return
this
;
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}
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int
Item_null::save_in_field
(
Field
*field,
bool
no_conversions)
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{
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return
set_field_to_null_with_conversions
(field, no_conversions);
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}
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int
Item_null::save_safe_in_field
(
Field
*field)
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{
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return
set_field_to_null(field);
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}
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void
Item_null::send
(
plugin::Client
*client,
String
*)
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{
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client->store();
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}
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}
/* namespace drizzled */
drizzled
item
null.cc
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