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Removing some duplicate code: deriving Item_func_opt_neg from Item_bool_func.

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This commit is contained in:
Alexander Barkov 2014-11-20 21:29:11 +04:00
parent 52b3d95f2a
commit cbc318fcf3
1 changed files with 5 additions and 7 deletions
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12
sql/item_cmpfunc.h
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@ -122,6 +122,8 @@ public:
Item_bool_func() :Item_int_func() {}
Item_bool_func(Item *a) :Item_int_func(a) {}
Item_bool_func(Item *a,Item *b) :Item_int_func(a,b) {}
Item_bool_func(Item *a, Item *b, Item *c) :Item_int_func(a, b, c) {}
Item_bool_func(List<Item> &list) :Item_int_func(list) { }
Item_bool_func(THD *thd, Item_bool_func *item) :Item_int_func(thd, item) {}
bool is_bool_func() { return 1; }
void fix_length_and_dec() { decimals=0; max_length=1; }
@ -644,16 +646,16 @@ public:
*/
class Item_func_opt_neg :public Item_int_func
class Item_func_opt_neg :public Item_bool_func
{
public:
bool negated; /* <=> the item represents NOT <func> */
bool pred_level; /* <=> [NOT] <func> is used on a predicate level */
public:
Item_func_opt_neg(Item *a, Item *b, Item *c)
:Item_int_func(a, b, c), negated(0), pred_level(0) {}
:Item_bool_func(a, b, c), negated(0), pred_level(0) {}
Item_func_opt_neg(List<Item> &list)
:Item_int_func(list), negated(0), pred_level(0) {}
:Item_bool_func(list), negated(0), pred_level(0) {}
public:
inline void negate() { negated= !negated; }
inline void top_level_item() { pred_level= 1; }
@ -684,9 +686,7 @@ public:
bool fix_fields(THD *, Item **);
void fix_length_and_dec();
virtual void print(String *str, enum_query_type query_type);
bool is_bool_func() { return 1; }
CHARSET_INFO *compare_collation() { return cmp_collation.collation; }
uint decimal_precision() const { return 1; }
bool eval_not_null_tables(uchar *opt_arg);
void fix_after_pullout(st_select_lex *new_parent, Item **ref);
bool count_sargable_conds(uchar *arg);
@ -1352,7 +1352,6 @@ public:
longlong val_int();
bool fix_fields(THD *, Item **);
void fix_length_and_dec();
uint decimal_precision() const { return 1; }
void cleanup()
{
uint i;
@ -1373,7 +1372,6 @@ public:
enum Functype functype() const { return IN_FUNC; }
const char *func_name() const { return " IN "; }
bool nulls_in_row();
bool is_bool_func() { return 1; }
CHARSET_INFO *compare_collation() { return cmp_collation.collation; }
bool eval_not_null_tables(uchar *opt_arg);
void fix_after_pullout(st_select_lex *new_parent, Item **ref);