diff options
Diffstat (limited to 'sql/item_timefunc.h')
| -rw-r--r-- | sql/item_timefunc.h | 126 |
1 files changed, 115 insertions, 11 deletions
diff --git a/sql/item_timefunc.h b/sql/item_timefunc.h index 6913d4c6809..aa4140192ab 100644 --- a/sql/item_timefunc.h +++ b/sql/item_timefunc.h @@ -1,15 +1,15 @@ /* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB - + 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; either version 2 of the License, or (at your option) any later version. - + 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ @@ -229,6 +229,33 @@ public: const char *func_name() const { return "date"; } void fix_length_and_dec() { decimals=0; max_length=10; } bool save_in_field(Field *to); + void make_field(Send_field *tmp_field) + { + init_make_field(tmp_field,FIELD_TYPE_DATE); + } + Field *tmp_table_field(TABLE *t_arg) + { + if (!t_arg) return result_field; + return new Field_date(maybe_null, name, t_arg); + } +}; + + +class Item_date_func :public Item_str_func +{ +public: + Item_date_func() :Item_str_func() {} + Item_date_func(Item *a) :Item_str_func(a) {} + Item_date_func(Item *a,Item *b) :Item_str_func(a,b) {} + void make_field(Send_field *tmp_field) + { + init_make_field(tmp_field,FIELD_TYPE_DATETIME); + } + Field *tmp_table_field(TABLE *t_arg) + { + if (!t_arg) return result_field; + return new Field_datetime(maybe_null, name, t_arg); + } }; @@ -247,6 +274,15 @@ public: { str_value.set(buff,buff_length); return &str_value; } const char *func_name() const { return "curtime"; } void fix_length_and_dec(); + void make_field(Send_field *tmp_field) + { + init_make_field(tmp_field,FIELD_TYPE_TIME); + } + Field *tmp_table_field(TABLE *t_arg) + { + if (!t_arg) return result_field; + return new Field_time(maybe_null, name, t_arg); + } }; @@ -263,15 +299,15 @@ public: }; -class Item_func_now :public Item_func +class Item_func_now :public Item_date_func { longlong value; char buff[20]; uint buff_length; TIME ltime; public: - Item_func_now() :Item_func() {} - Item_func_now(Item *a) :Item_func(a) {} + Item_func_now() :Item_date_func() {} + Item_func_now(Item *a) :Item_date_func(a) {} enum Item_result result_type () const { return STRING_RESULT; } double val() { return (double) value; } longlong val_int() { return value; } @@ -308,16 +344,16 @@ public: }; -class Item_func_from_unixtime :public Item_func +class Item_func_from_unixtime :public Item_date_func { public: - Item_func_from_unixtime(Item *a) :Item_func(a) {} + Item_func_from_unixtime(Item *a) :Item_date_func(a) {} double val() { return (double) Item_func_from_unixtime::val_int(); } longlong val_int(); String *val_str(String *str); const char *func_name() const { return "from_unixtime"; } void fix_length_and_dec() { decimals=0; max_length=19; } - enum Item_result result_type () const { return STRING_RESULT; } +// enum Item_result result_type () const { return STRING_RESULT; } bool get_date(TIME *res,bool fuzzy_date); }; @@ -331,6 +367,15 @@ public: String *val_str(String *); void fix_length_and_dec() { maybe_null=1; max_length=13; } const char *func_name() const { return "sec_to_time"; } + void make_field(Send_field *tmp_field) + { + init_make_field(tmp_field,FIELD_TYPE_TIME); + } + Field *tmp_table_field(TABLE *t_arg) + { + if (!t_arg) return result_field; + return new Field_time(maybe_null, name, t_arg); + } }; enum interval_type { INTERVAL_YEAR, INTERVAL_MONTH, INTERVAL_DAY, @@ -340,7 +385,7 @@ enum interval_type { INTERVAL_YEAR, INTERVAL_MONTH, INTERVAL_DAY, INTERVAL_HOUR_MINUTE, INTERVAL_HOUR_SECOND, INTERVAL_MINUTE_SECOND}; -class Item_date_add_interval :public Item_str_func +class Item_date_add_interval :public Item_date_func { const interval_type int_type; String value; @@ -348,7 +393,7 @@ class Item_date_add_interval :public Item_str_func public: Item_date_add_interval(Item *a,Item *b,interval_type type_arg,bool neg_arg) - :Item_str_func(a,b),int_type(type_arg), date_sub_interval(neg_arg) {} + :Item_date_func(a,b),int_type(type_arg), date_sub_interval(neg_arg) {} String *val_str(String *); const char *func_name() const { return "date_add_interval"; } void fix_length_and_dec() { maybe_null=1; max_length=19; value.alloc(32);} @@ -369,3 +414,62 @@ class Item_extract :public Item_int_func const char *func_name() const { return "extract"; } void fix_length_and_dec(); }; + +class Item_typecast :public Item_str_func +{ +public: + Item_typecast(Item *a) :Item_str_func(a) {} + String *val_str(String *a) + { a=args[0]->val_str(a); null_value=args[0]->null_value; return a; } + void fix_length_and_dec() { max_length=args[0]->max_length; } + void print(String *str); +}; + + +class Item_date_typecast :public Item_typecast +{ +public: + Item_date_typecast(Item *a) :Item_typecast(a) {} + const char *func_name() const { return "date"; } + void make_field(Send_field *tmp_field) + { + init_make_field(tmp_field,FIELD_TYPE_DATE); + } + Field *tmp_table_field(TABLE *t_arg) + { + if (!t_arg) return result_field; + return new Field_date(maybe_null, name, t_arg); + } +}; + +class Item_time_typecast :public Item_typecast +{ +public: + Item_time_typecast(Item *a) :Item_typecast(a) {} + const char *func_name() const { return "time"; } + void make_field(Send_field *tmp_field) + { + init_make_field(tmp_field,FIELD_TYPE_TIME); + } + Field *tmp_table_field(TABLE *t_arg) + { + if (!t_arg) return result_field; + return new Field_time(maybe_null, name, t_arg); + } +}; + +class Item_datetime_typecast :public Item_typecast +{ +public: + Item_datetime_typecast(Item *a) :Item_typecast(a) {} + const char *func_name() const { return "datetime"; } + void make_field(Send_field *tmp_field) + { + init_make_field(tmp_field,FIELD_TYPE_DATETIME); + } + Field *tmp_table_field(TABLE *t_arg) + { + if (!t_arg) return result_field; + return new Field_datetime(maybe_null, name, t_arg); + } +}; |