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This commit is contained in:
bell@sanja.is.com.ua
2002-11-27 19:31:11 +02:00
parent a3ae370db8 5f2016bb20
commit 4be2cfd62d
47 changed files with 550 additions and 131 deletions
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104
sql/item_cmpfunc.h
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@@ -30,6 +30,61 @@ public:
void fix_length_and_dec() { decimals=0; max_length=1; }
};
class Item_bool_func2;
class Compare_func
{
protected:
Item_bool_func2 *owner;
public:
static void *operator new(size_t size)
{
return (void*) sql_alloc((uint) size);
}
static void operator delete(void *ptr,size_t size) {}
Compare_func(Item_bool_func2 *o) { owner= o; }
virtual ~Compare_func() {};
virtual int compare(Item *, Item*)= 0;
static Compare_func* get_compare_func(Item_bool_func2 *owner,
Item* a, Item* b);
};
class Compare_func_string: public Compare_func
{
public:
Compare_func_string(Item_bool_func2 *owner): Compare_func(owner) {};
int compare(Item *, Item*);
};
class Compare_func_real: public Compare_func
{
public:
Compare_func_real(Item_bool_func2 *owner): Compare_func(owner) {};
int compare(Item *, Item*);
};
class Compare_func_int: public Compare_func
{
public:
Compare_func_int(Item_bool_func2 *owner): Compare_func(owner) {};
int compare(Item *, Item*);
};
class Compare_func_row: public Compare_func
{
Compare_func **cmp_func;
public:
Compare_func_row(Item_bool_func2 *owner, Item* a, Item* b);
~Compare_func_row()
{
if(cmp_func)
sql_element_free(cmp_func);
}
int compare(Item *, Item*);
};
class Item_bool_func2 :public Item_int_func
{ /* Bool with 2 string args */
protected:
@@ -37,17 +92,18 @@ protected:
public:
Item_bool_func2(Item *a,Item *b) :Item_int_func(a,b) {}
void fix_length_and_dec();
void set_cmp_func(Item_result type);
int (Item_bool_func2::*cmp_func)();
int compare_string(); /* compare arg[0] & arg[1] */
int compare_real(); /* compare arg[0] & arg[1] */
int compare_int(); /* compare arg[0] & arg[1] */
Compare_func *cmp_func;
void set_cmp_func(Item *a, Item *b)
{
cmp_func= Compare_func::get_compare_func(this, args[0], args[1]);
}
optimize_type select_optimize() const { return OPTIMIZE_OP; }
virtual enum Functype rev_functype() const { return UNKNOWN_FUNC; }
bool have_rev_func() const { return rev_functype() != UNKNOWN_FUNC; }
void print(String *str) { Item_func::print_op(str); }
bool is_null() { return test(args[0]->is_null() || args[1]->is_null()); }
friend class Compare_func_string;
static Item_bool_func2* eq_creator(Item *a, Item *b);
static Item_bool_func2* ne_creator(Item *a, Item *b);
static Item_bool_func2* gt_creator(Item *a, Item *b);
@@ -56,6 +112,14 @@ public:
static Item_bool_func2* le_creator(Item *a, Item *b);
};
class Item_bool_rowready_func2 :public Item_bool_func2
{
public:
Item_bool_rowready_func2(Item *a,Item *b) :Item_bool_func2(a,b)
{
allowed_arg_cols= a->cols();
}
};
class Item_func_not :public Item_bool_func
{
@@ -65,10 +129,10 @@ public:
const char *func_name() const { return "not"; }
};
class Item_func_eq :public Item_bool_func2
class Item_func_eq :public Item_bool_rowready_func2
{
public:
Item_func_eq(Item *a,Item *b) :Item_bool_func2(a,b) { };
Item_func_eq(Item *a,Item *b) :Item_bool_rowready_func2(a,b) { };
longlong val_int();
enum Functype functype() const { return EQ_FUNC; }
enum Functype rev_functype() const { return EQ_FUNC; }
@@ -90,10 +154,10 @@ public:
};
class Item_func_ge :public Item_bool_func2
class Item_func_ge :public Item_bool_rowready_func2
{
public:
Item_func_ge(Item *a,Item *b) :Item_bool_func2(a,b) { };
Item_func_ge(Item *a,Item *b) :Item_bool_rowready_func2(a,b) { };
longlong val_int();
enum Functype functype() const { return GE_FUNC; }
enum Functype rev_functype() const { return LE_FUNC; }
@@ -102,10 +166,10 @@ public:
};
class Item_func_gt :public Item_bool_func2
class Item_func_gt :public Item_bool_rowready_func2
{
public:
Item_func_gt(Item *a,Item *b) :Item_bool_func2(a,b) { };
Item_func_gt(Item *a,Item *b) :Item_bool_rowready_func2(a,b) { };
longlong val_int();
enum Functype functype() const { return GT_FUNC; }
enum Functype rev_functype() const { return LT_FUNC; }
@@ -114,10 +178,10 @@ public:
};
class Item_func_le :public Item_bool_func2
class Item_func_le :public Item_bool_rowready_func2
{
public:
Item_func_le(Item *a,Item *b) :Item_bool_func2(a,b) { };
Item_func_le(Item *a,Item *b) :Item_bool_rowready_func2(a,b) { };
longlong val_int();
enum Functype functype() const { return LE_FUNC; }
enum Functype rev_functype() const { return GE_FUNC; }
@@ -126,10 +190,10 @@ public:
};
class Item_func_lt :public Item_bool_func2
class Item_func_lt :public Item_bool_rowready_func2
{
public:
Item_func_lt(Item *a,Item *b) :Item_bool_func2(a,b) { }
Item_func_lt(Item *a,Item *b) :Item_bool_rowready_func2(a,b) { }
longlong val_int();
enum Functype functype() const { return LT_FUNC; }
enum Functype rev_functype() const { return GT_FUNC; }
@@ -138,10 +202,10 @@ public:
};
class Item_func_ne :public Item_bool_func2
class Item_func_ne :public Item_bool_rowready_func2
{
public:
Item_func_ne(Item *a,Item *b) :Item_bool_func2(a,b) { }
Item_func_ne(Item *a,Item *b) :Item_bool_rowready_func2(a,b) { }
longlong val_int();
enum Functype functype() const { return NE_FUNC; }
cond_result eq_cmp_result() const { return COND_FALSE; }
@@ -186,7 +250,8 @@ public:
longlong val_int();
bool fix_fields(THD *thd, struct st_table_list *tlist, Item **ref)
{
return (item->fix_fields(thd, tlist, &item) ||
return (item->check_cols(1) ||
item->fix_fields(thd, tlist, &item) ||
Item_func::fix_fields(thd, tlist, ref));
}
void fix_length_and_dec();
@@ -426,7 +491,8 @@ class Item_func_in :public Item_int_func
longlong val_int();
bool fix_fields(THD *thd, struct st_table_list *tlist, Item **ref)
{
return (item->fix_fields(thd, tlist, &item) ||
return (item->check_cols(1) ||
item->fix_fields(thd, tlist, &item) ||
Item_func::fix_fields(thd, tlist, ref));
}
void fix_length_and_dec();