~drizzle-trunk/drizzle/development

/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-

 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:

 *

 *  Copyright (C) 2008 Sun Microsystems, Inc.

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation; version 2 of the License.

 *

 *  This program is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU General Public License for more details.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with this program; if not, write to the Free Software

 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 */

#include <config.h>

#include <drizzled/field.h>

#include <drizzled/item/cache.h>

#include <drizzled/item/cache_decimal.h>

#include <drizzled/item/cache_int.h>

#include <drizzled/item/cache_real.h>

#include <drizzled/item/cache_row.h>

#include <drizzled/item/cache_str.h>

#include <drizzled/lex_string.h>

namespace drizzled {

Item_cache* Item_cache::get_cache(const Item *item)

{

  switch (item->result_type()) 

  {

  case INT_RESULT:

    return new Item_cache_int();

  case REAL_RESULT:

    return new Item_cache_real();

  case DECIMAL_RESULT:

    return new Item_cache_decimal();

  case STRING_RESULT:

    return new Item_cache_str(item);

  case ROW_RESULT:

    return new Item_cache_row();

  }

  assert(false);

  abort();

}

void Item_cache::print(String *str)

{

  str->append(STRING_WITH_LEN("<cache>("));

  if (example)

    example->print(str);

  else

    Item::print(str);

  str->append(')');

}

bool Item_cache::eq_def(Field *field)

{

  return cached_field ? cached_field->eq_def(field) : false;

}

} /* namespace drizzled */