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cache_row.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/item/cache.h>
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namespace
drizzled {
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class
Item_cache_row
:
public
Item_cache
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{
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Item_cache
**values;
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uint32_t item_count;
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bool
save_array;
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public
:
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Item_cache_row
()
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:
Item_cache
(), values(0), item_count(2), save_array(0) {}
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/*
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'allocate' used only in row transformer, to preallocate space for row
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cache.
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*/
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void
allocate(uint32_t num);
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/*
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'setup' is needed only by row => it not called by simple row subselect
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(only by IN subselect (in subselect optimizer))
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*/
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bool
setup(
Item
*);
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void
store(
Item
*);
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void
illegal_method_call(
const
char
* method_name);
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void
make_field(
SendField
*field);
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double
val_real
();
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int64_t
val_int
();
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String
*
val_str
(
String
*val);
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type::Decimal
*
val_decimal
(
type::Decimal
*val);
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enum
Item_result result_type()
const
;
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uint32_t cols();
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Item
*element_index(uint32_t i);
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Item
**addr(uint32_t i);
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bool
check_cols(uint32_t c);
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bool
null_inside();
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void
bring_value();
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void
keep_array();
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void
cleanup();
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};
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}
/* namespace drizzled */
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drizzled
item
cache_row.h
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