diff options
Diffstat (limited to 'sql/item.h')
| -rw-r--r-- | sql/item.h | 83 |
1 files changed, 80 insertions, 3 deletions
diff --git a/sql/item.h b/sql/item.h index c14a9499624..7572b7cece2 100644 --- a/sql/item.h +++ b/sql/item.h @@ -2,7 +2,7 @@ #define SQL_ITEM_INCLUDED /* Copyright (c) 2000, 2017, Oracle and/or its affiliates. - Copyright (c) 2009, 2017, MariaDB + Copyright (c) 2009, 2018, MariaDB Corporation 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 @@ -87,7 +87,11 @@ public: }; +#ifdef DBUG_OFF +static inline const char *dbug_print_item(Item *item) { return NULL; } +#else const char *dbug_print_item(Item *item); +#endif class Virtual_tmp_table; class sp_head; @@ -583,7 +587,7 @@ class Item: public Value_source, public: static void *operator new(size_t size, MEM_ROOT *mem_root) throw () { return alloc_root(mem_root, size); } - static void operator delete(void *ptr,size_t size) { TRASH(ptr, size); } + static void operator delete(void *ptr,size_t size) { TRASH_FREE(ptr, size); } static void operator delete(void *ptr, MEM_ROOT *mem_root) {} enum Type {FIELD_ITEM= 0, FUNC_ITEM, SUM_FUNC_ITEM, @@ -687,6 +691,12 @@ protected: DBUG_ASSERT(fixed == 1); return (null_value= item->get_date_with_conversion(ltime, fuzzydate)); } + /* + This method is used if the item was not null but convertion to + TIME/DATE/DATETIME failed. We return a zero date if allowed, + otherwise - null. + */ + bool make_zero_date(MYSQL_TIME *ltime, ulonglong fuzzydate); public: /* @@ -1369,7 +1379,12 @@ public: void split_sum_func2(THD *thd, Ref_ptr_array ref_pointer_array, List<Item> &fields, Item **ref, uint flags); - virtual bool get_date(MYSQL_TIME *ltime, ulonglong fuzzydate); + virtual bool get_date(MYSQL_TIME *ltime, ulonglong fuzzydate)= 0; + bool get_date_from_int(MYSQL_TIME *ltime, ulonglong fuzzydate); + bool get_date_from_year(MYSQL_TIME *ltime, ulonglong fuzzydate); + bool get_date_from_real(MYSQL_TIME *ltime, ulonglong fuzzydate); + bool get_date_from_decimal(MYSQL_TIME *ltime, ulonglong fuzzydate); + bool get_date_from_string(MYSQL_TIME *ltime, ulonglong fuzzydate); bool get_time(MYSQL_TIME *ltime) { return get_date(ltime, TIME_TIME_ONLY | TIME_INVALID_DATES); } // Get date with automatic TIME->DATETIME conversion @@ -1660,6 +1675,7 @@ public: */ virtual bool check_partition_func_processor(void *arg) { return 1;} virtual bool vcol_in_partition_func_processor(void *arg) { return 0; } + virtual bool rename_fields_processor(void *arg) { return 0; } /** Processor used to check acceptability of an item in the defining expression for a virtual column @@ -1673,6 +1689,12 @@ public: uint errors; /* Bits of possible errors */ const char *name; /* Not supported function */ }; + struct func_processor_rename + { + LEX_CSTRING db_name; + LEX_CSTRING table_name; + List<Create_field> fields; + }; virtual bool check_vcol_func_processor(void *arg) { return mark_unsupported_function(full_name(), arg, VCOL_IMPOSSIBLE); @@ -2324,6 +2346,7 @@ public: longlong val_int(); String *val_str(String *sp); my_decimal *val_decimal(my_decimal *decimal_value); + bool get_date(MYSQL_TIME *ltime, ulonglong fuzzydate); bool is_null(); public: @@ -2586,6 +2609,7 @@ public: longlong val_int(); String *val_str(String *sp); my_decimal *val_decimal(my_decimal *); + bool get_date(MYSQL_TIME *ltime, ulonglong fuzzydate); bool is_null(); virtual void print(String *str, enum_query_type query_type); @@ -2622,6 +2646,10 @@ public: Item_num(THD *thd): Item_basic_constant(thd) { collation.set_numeric(); } Item *safe_charset_converter(THD *thd, CHARSET_INFO *tocs); bool check_partition_func_processor(void *int_arg) { return FALSE;} + bool get_date(MYSQL_TIME *ltime, ulonglong fuzzydate) + { + return type_handler()->Item_get_date(this, ltime, fuzzydate); + } }; #define NO_CACHED_FIELD_INDEX ((uint)(-1)) @@ -2743,6 +2771,10 @@ public: longlong val_int() { return field->val_int(); } String *val_str(String *str) { return field->val_str(str); } my_decimal *val_decimal(my_decimal *dec) { return field->val_decimal(dec); } + bool get_date(MYSQL_TIME *ltime, ulonglong fuzzydate) + { + return field->get_date(ltime, fuzzydate); + } void make_field(THD *thd, Send_field *tmp_field); const Type_handler *type_handler() const { @@ -2898,6 +2930,7 @@ public: bool update_table_bitmaps_processor(void *arg); bool switch_to_nullable_fields_processor(void *arg); bool update_vcol_processor(void *arg); + bool rename_fields_processor(void *arg); bool check_vcol_func_processor(void *arg) { context= 0; @@ -3047,6 +3080,7 @@ public: longlong val_int(); String *val_str(String *str); my_decimal *val_decimal(my_decimal *); + bool get_date(MYSQL_TIME *ltime, ulonglong fuzzydate); int save_in_field(Field *field, bool no_conversions); int save_safe_in_field(Field *field); bool send(Protocol *protocol, st_value *buffer); @@ -3765,6 +3799,10 @@ public: return (String*) &str_value; } my_decimal *val_decimal(my_decimal *); + bool get_date(MYSQL_TIME *ltime, ulonglong fuzzydate) + { + return get_date_from_string(ltime, fuzzydate); + } int save_in_field(Field *field, bool no_conversions); const Type_handler *type_handler() const { return &type_handler_varchar; } bool basic_const_item() const { return 1; } @@ -4052,6 +4090,10 @@ public: str_value.bin_eq(&((Item_hex_constant*)item)->str_value); } String *val_str(String*) { DBUG_ASSERT(fixed == 1); return &str_value; } + bool get_date(MYSQL_TIME *ltime, ulonglong fuzzydate) + { + return type_handler()->Item_get_date(this, ltime, fuzzydate); + } }; @@ -5397,6 +5439,8 @@ public: my_decimal *val_decimal(my_decimal *); double val_real(); longlong val_int(); + bool get_date(MYSQL_TIME *ltime, ulonglong fuzzydate) + { return get_date_from_string(ltime, fuzzydate); } void copy(); int save_in_field(Field *field, bool no_conversions); Item *get_copy(THD *thd) @@ -5422,6 +5466,8 @@ public: { return null_value ? 0 : cached_value; } + bool get_date(MYSQL_TIME *ltime, ulonglong fuzzydate) + { return get_date_from_int(ltime, fuzzydate); } virtual void copy(); Item *get_copy(THD *thd) { return get_item_copy<Item_copy_int>(thd, this); } @@ -5464,6 +5510,10 @@ public: { return (longlong) rint(val_real()); } + bool get_date(MYSQL_TIME *ltime, ulonglong fuzzydate) + { + return get_date_from_real(ltime, fuzzydate); + } void copy() { cached_value= item->val_real(); @@ -5489,6 +5539,10 @@ public: } double val_real(); longlong val_int(); + bool get_date(MYSQL_TIME *ltime, ulonglong fuzzydate) + { + return get_date_from_decimal(ltime, fuzzydate); + } void copy(); Item *get_copy(THD *thd) { return get_item_copy<Item_copy_decimal>(thd, this); } @@ -5983,6 +6037,8 @@ public: longlong val_int(); String* val_str(String *str); my_decimal *val_decimal(my_decimal *); + bool get_date(MYSQL_TIME *ltime, ulonglong fuzzydate) + { return get_date_from_int(ltime, fuzzydate); } bool cache_value(); int save_in_field(Field *field, bool no_conversions); Item *convert_to_basic_const_item(THD *thd); @@ -5991,6 +6047,15 @@ public: }; +class Item_cache_year: public Item_cache_int +{ +public: + Item_cache_year(THD *thd): Item_cache_int(thd, &type_handler_year) { } + bool get_date(MYSQL_TIME *ltime, ulonglong fuzzydate) + { return get_date_from_year(ltime, fuzzydate); } +}; + + class Item_cache_temporal: public Item_cache_int { protected: @@ -6058,6 +6123,8 @@ public: longlong val_int(); String* val_str(String *str); my_decimal *val_decimal(my_decimal *); + bool get_date(MYSQL_TIME *ltime, ulonglong fuzzydate) + { return get_date_from_real(ltime, fuzzydate); } bool cache_value(); Item *convert_to_basic_const_item(THD *thd); Item *get_copy(THD *thd) @@ -6076,6 +6143,8 @@ public: longlong val_int(); String* val_str(String *str); my_decimal *val_decimal(my_decimal *); + bool get_date(MYSQL_TIME *ltime, ulonglong fuzzydate) + { return get_date_from_decimal(ltime, fuzzydate); } bool cache_value(); Item *convert_to_basic_const_item(THD *thd); Item *get_copy(THD *thd) @@ -6102,6 +6171,8 @@ public: longlong val_int(); String* val_str(String *); my_decimal *val_decimal(my_decimal *); + bool get_date(MYSQL_TIME *ltime, ulonglong fuzzydate) + { return get_date_from_string(ltime, fuzzydate); } CHARSET_INFO *charset() const { return value->charset(); }; int save_in_field(Field *field, bool no_conversions); bool cache_value(); @@ -6182,6 +6253,11 @@ public: illegal_method_call((const char*)"val_decimal"); return 0; }; + bool get_date(MYSQL_TIME *ltime, ulonglong fuzzydate) + { + illegal_method_call((const char*)"val_decimal"); + return true; + } uint cols() const { return item_count; } Item *element_index(uint i) { return values[i]; } @@ -6282,6 +6358,7 @@ public: longlong val_int(); my_decimal *val_decimal(my_decimal *); String *val_str(String*); + bool get_date(MYSQL_TIME *ltime, ulonglong fuzzydate); Field *create_tmp_field(bool group, TABLE *table) { return Item_type_holder::real_type_handler()-> |