diff options
Diffstat (limited to 'sql/item_cmpfunc.h')
| -rw-r--r-- | sql/item_cmpfunc.h | 44 |
1 files changed, 20 insertions, 24 deletions
diff --git a/sql/item_cmpfunc.h b/sql/item_cmpfunc.h index 506de05f0ea..ec5ba8bb616 100644 --- a/sql/item_cmpfunc.h +++ b/sql/item_cmpfunc.h @@ -33,32 +33,22 @@ class Arg_comparator: public Sql_alloc Item **a, **b; arg_cmp_func func; Item_result_field *owner; + bool set_null; // TRUE <=> set owner->null_value Arg_comparator *comparators; // used only for compare_row() double precision; /* Fields used in DATE/DATETIME comparison. */ THD *thd; - enum_field_types a_type, b_type; // Types of a and b items Item *a_cache, *b_cache; // Cached values of a and b items - bool is_nulls_eq; // TRUE <=> compare for the EQUAL_FUNC - bool set_null; // TRUE <=> set owner->null_value // when one of arguments is NULL. - enum enum_date_cmp_type { CMP_DATE_DFLT= 0, CMP_DATE_WITH_DATE, - CMP_DATE_WITH_STR, CMP_STR_WITH_DATE }; - longlong (*get_value_a_func)(THD *thd, Item ***item_arg, Item **cache_arg, - Item *warn_item, bool *is_null); - longlong (*get_value_b_func)(THD *thd, Item ***item_arg, Item **cache_arg, - Item *warn_item, bool *is_null); - bool try_year_cmp_func(Item_result type); public: DTCollation cmp_collation; /* Allow owner function to use string buffers. */ String value1, value2; - Arg_comparator(): comparators(0), thd(0), a_cache(0), b_cache(0), set_null(TRUE), - get_value_a_func(0), get_value_b_func(0) {}; - Arg_comparator(Item **a1, Item **a2): a(a1), b(a2), comparators(0), thd(0), - a_cache(0), b_cache(0), set_null(TRUE), - get_value_a_func(0), get_value_b_func(0) {}; + Arg_comparator(): set_null(TRUE), comparators(0), thd(0), + a_cache(0), b_cache(0) {}; + Arg_comparator(Item **a1, Item **a2): a(a1), b(a2), set_null(TRUE), + comparators(0), thd(0), a_cache(0), b_cache(0) {}; int set_compare_func(Item_result_field *owner, Item_result type); inline int set_compare_func(Item_result_field *owner_arg) @@ -75,8 +65,8 @@ public: { set_null= set_null_arg; return set_cmp_func(owner_arg, a1, a2, - item_cmp_type((*a1)->result_type(), - (*a2)->result_type())); + item_cmp_type((*a1)->cmp_type(), + (*a2)->cmp_type())); } inline int compare() { return (this->*func)(); } @@ -99,14 +89,12 @@ public: int compare_real_fixed(); int compare_e_real_fixed(); int compare_datetime(); // compare args[0] & args[1] as DATETIMEs - - static enum enum_date_cmp_type can_compare_as_dates(Item *a, Item *b, - ulonglong *const_val_arg); + int compare_e_datetime(); Item** cache_converted_constant(THD *thd, Item **value, Item **cache, Item_result type); void set_datetime_cmp_func(Item_result_field *owner_arg, Item **a1, Item **b1); - static arg_cmp_func comparator_matrix [5][2]; + static arg_cmp_func comparator_matrix [6][2]; inline bool is_owner_equal_func() { return (owner->type() == Item::FUNC_ITEM && @@ -614,9 +602,7 @@ public: Item_result cmp_type; String value0,value1,value2; /* TRUE <=> arguments will be compared as dates. */ - bool compare_as_dates; - /* Comparators used for DATE/DATETIME comparison. */ - Arg_comparator ge_cmp, le_cmp; + Item *compare_as_dates; Item_func_between(Item *a, Item *b, Item *c) :Item_func_opt_neg(a, b, c), compare_as_dates(FALSE) {} longlong val_int(); @@ -894,6 +880,16 @@ public: lval_cache(0) {}; void set(uint pos,Item *item); uchar *get_value(Item *item); + Item* create_item() + { + return new Item_datetime(); + } + void value_to_item(uint pos, Item *item) + { + packed_longlong *val= reinterpret_cast<packed_longlong*>(base)+pos; + Item_datetime *dt= reinterpret_cast<Item_datetime*>(item); + dt->set(val->val); + } friend int cmp_longlong(void *cmp_arg, packed_longlong *a,packed_longlong *b); }; |