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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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* Copyright (C) 2008 Sun Microsystems
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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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* 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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* 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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#ifndef DRIZZLED_FUNCTION_TIME_DATE_H
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#define DRIZZLED_FUNCTION_TIME_DATE_H
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#include "drizzled/function/func.h"
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#include "drizzled/function/str/strfunc.h"
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/* forward declarations */
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namespace drizzled {class Date;}
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/* A function which evaluates to a Date */
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class Item_date :public Item_func
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using Item_func::tmp_table_field;
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Item_date() :Item_func() {}
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Item_date(Item *a) :Item_func(a) {}
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enum Item_result result_type () const { return STRING_RESULT; }
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enum_field_types field_type() const { return DRIZZLE_TYPE_DATE; }
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String *val_str(String *str);
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double val_real() { return val_real_from_decimal(); }
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const char *func_name() const { return "date"; }
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void fix_length_and_dec()
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collation.set(&my_charset_bin);
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max_length=MAX_DATE_WIDTH*MY_CHARSET_BIN_MB_MAXLEN;
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* All functions which inherit from Item_date must implement
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* their own get_temporal() method, which takes a supplied
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* drizzled::Date reference and populates it with a correct
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* date based on the semantics of the function.
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* Returns whether the function was able to correctly fill
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* the supplied date temporal with a proper date.
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* @param Reference to a drizzled::Date to populate
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virtual bool get_temporal(drizzled::Date &temporal)= 0;
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Field *tmp_table_field(Table *table)
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return tmp_table_field_from_field_type(table, 0);
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bool result_as_int64_t() { return true; }
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my_decimal *val_decimal(my_decimal *decimal_value)
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return val_decimal_from_date(decimal_value);
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int save_in_field(Field *field,
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return save_date_in_field(field);
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class Item_date_func :public Item_str_func
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Item_date_func() :Item_str_func() {}
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Item_date_func(Item *a) :Item_str_func(a) {}
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Item_date_func(Item *a,Item *b) :Item_str_func(a,b) {}
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Item_date_func(Item *a,Item *b, Item *c) :Item_str_func(a,b,c) {}
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enum_field_types field_type() const { return DRIZZLE_TYPE_DATETIME; }
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using Item_func::tmp_table_field;
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Field *tmp_table_field(Table *table)
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return tmp_table_field_from_field_type(table, 0);
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bool result_as_int64_t() { return true; }
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double val_real() { return (double) val_int(); }
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my_decimal *val_decimal(my_decimal *decimal_value)
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return val_decimal_from_date(decimal_value);
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int save_in_field(Field *field,
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return save_date_in_field(field);
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#endif /* DRIZZLED_FUNCTION_TIME_DATE_H */