diff options
Diffstat (limited to 'sql/item.h')
| -rw-r--r-- | sql/item.h | 85 |
1 files changed, 62 insertions, 23 deletions
diff --git a/sql/item.h b/sql/item.h index 70729afe28e..206d7b5bd78 100644 --- a/sql/item.h +++ b/sql/item.h @@ -32,7 +32,8 @@ public: enum Type {FIELD_ITEM,FUNC_ITEM,SUM_FUNC_ITEM,STRING_ITEM, INT_ITEM,REAL_ITEM,NULL_ITEM,VARBIN_ITEM, COPY_STR_ITEM,FIELD_AVG_ITEM, DEFAULT_ITEM, - PROC_ITEM,COND_ITEM,REF_ITEM,FIELD_STD_ITEM, CONST_ITEM}; + PROC_ITEM,COND_ITEM,REF_ITEM,FIELD_STD_ITEM, CONST_ITEM, + SUBSELECT_ITEM}; enum cond_result { COND_UNDEF,COND_OK,COND_TRUE,COND_FALSE }; String str_value; /* used to store value */ @@ -46,14 +47,13 @@ public: my_bool unsigned_flag; my_bool with_sum_func; - // alloc & destruct is done as start of select using sql_alloc Item(); virtual ~Item() { name=0; } /*lint -e1509 */ void set_name(char* str,uint length=0); void init_make_field(Send_field *tmp_field,enum enum_field_types type); - virtual bool fix_fields(THD *,struct st_table_list *); - virtual bool save_in_field(Field *field); + virtual bool fix_fields(THD *, struct st_table_list *, Item **); + virtual int save_in_field(Field *field); virtual void save_org_in_field(Field *field) { (void) save_in_field(field); } virtual bool send(THD *thd, String *str); @@ -86,15 +86,18 @@ public: }; +class st_select_lex; class Item_ident :public Item { public: const char *db_name; const char *table_name; const char *field_name; + st_select_lex *depended_from; Item_ident(const char *db_name_par,const char *table_name_par, const char *field_name_par) - :db_name(db_name_par),table_name(table_name_par),field_name(field_name_par) + :db_name(db_name_par),table_name(table_name_par), + field_name(field_name_par), depended_from(0) { name = (char*) field_name_par; } const char *full_name() const; unsigned int size_of() { return sizeof(*this);} @@ -126,8 +129,8 @@ public: return result_field->send(thd,str_arg); } void make_field(Send_field *field); - bool fix_fields(THD *,struct st_table_list *); - bool save_in_field(Field *field); + bool fix_fields(THD *, struct st_table_list *, Item **); + int save_in_field(Field *field); void save_org_in_field(Field *field); table_map used_tables() const; enum Item_result result_type () const @@ -153,7 +156,7 @@ public: longlong val_int(); String *val_str(String *str); void make_field(Send_field *field); - bool save_in_field(Field *field); + int save_in_field(Field *field); enum Item_result result_type () const { return STRING_RESULT; } bool send(THD *thd, String *str); @@ -163,6 +166,40 @@ public: unsigned int size_of() { return sizeof(*this);} }; +class Item_param :public Item +{ +public: + longlong int_value; + double real_value; + enum Item_result item_result_type; + enum Type item_type; + enum enum_field_types buffer_type; + my_bool long_data_supplied; + + Item_param(char *name_par=0){ + name= name_par ? name_par : (char*) "?"; + long_data_supplied = false; + item_type = STRING_ITEM; item_result_type = STRING_RESULT; + } + enum Type type() const { return item_type; } + double val(); + longlong val_int(); + String *val_str(String*); + void make_field(Send_field *field); + int save_in_field(Field *field); + void set_null(); + void set_int(longlong i); + void set_double(float i); + void set_double(double i); + void set_value(const char *str, uint length); + void set_long_str(const char *str, ulong length); + void set_long_binary(const char *str, ulong length); + void set_longdata(const char *str, ulong length); + void set_long_end(); + enum Item_result result_type () const + { return item_result_type; } + Item *new_item() { return new Item_param(name); } +}; class Item_int :public Item { @@ -186,7 +223,7 @@ public: double val() { return (double) value; } String *val_str(String*); void make_field(Send_field *field); - bool save_in_field(Field *field); + int save_in_field(Field *field); bool basic_const_item() const { return 1; } Item *new_item() { return new Item_int(name,value,max_length); } void print(String *str); @@ -228,7 +265,7 @@ public: max_length=length; } Item_real(double value_par) :value(value_par) {} - bool save_in_field(Field *field); + int save_in_field(Field *field); enum Type type() const { return REAL_ITEM; } double val() { return value; } longlong val_int() { return (longlong) (value+(value > 0 ? 0.5 : -0.5));} @@ -254,16 +291,16 @@ public: class Item_string :public Item { public: - Item_string(const char *str,uint length) + Item_string(const char *str,uint length,CHARSET_INFO *cs) { - str_value.set(str,length); + str_value.set(str,length,cs); max_length=length; name=(char*) str_value.ptr(); decimals=NOT_FIXED_DEC; } - Item_string(const char *name_par,const char *str,uint length) + Item_string(const char *name_par,const char *str,uint length,CHARSET_INFO *cs) { - str_value.set(str,length); + str_value.set(str,length,cs); max_length=length; name=(char*) name_par; decimals=NOT_FIXED_DEC; @@ -273,12 +310,12 @@ public: double val() { return atof(str_value.ptr()); } longlong val_int() { return strtoll(str_value.ptr(),(char**) 0,10); } String *val_str(String*) { return (String*) &str_value; } - bool save_in_field(Field *field); + int save_in_field(Field *field); void make_field(Send_field *field); enum Item_result result_type () const { return STRING_RESULT; } bool basic_const_item() const { return 1; } bool eq(const Item *item, bool binary_cmp) const; - Item *new_item() { return new Item_string(name,str_value.ptr(),max_length); } + Item *new_item() { return new Item_string(name,str_value.ptr(),max_length,default_charset_info); } String *const_string() { return &str_value; } inline void append(char *str,uint length) { str_value.append(str,length); } void print(String *str); @@ -312,7 +349,7 @@ public: class Item_datetime :public Item_string { public: - Item_datetime(const char *item_name): Item_string(item_name,"",0) + Item_datetime(const char *item_name): Item_string(item_name,"",0,default_charset_info) { max_length=19;} void make_field(Send_field *field); unsigned int size_of() { return sizeof(*this);} @@ -321,7 +358,7 @@ public: class Item_empty_string :public Item_string { public: - Item_empty_string(const char *header,uint length) :Item_string("",0) + Item_empty_string(const char *header,uint length) :Item_string("",0,default_charset_info) { name=(char*) header; max_length=length;} unsigned int size_of() { return sizeof(*this);} }; @@ -329,13 +366,13 @@ public: class Item_varbinary :public Item { public: - Item_varbinary(const char *str,uint str_length); + Item_varbinary(const char *str,uint str_length,CHARSET_INFO *cs); ~Item_varbinary() {} enum Type type() const { return VARBIN_ITEM; } double val() { return (double) Item_varbinary::val_int(); } longlong val_int(); String *val_str(String*) { return &str_value; } - bool save_in_field(Field *field); + int save_in_field(Field *field); void make_field(Send_field *field); enum Item_result result_type () const { return INT_RESULT; } unsigned int size_of() { return sizeof(*this);} @@ -396,8 +433,8 @@ public: } bool send(THD *thd, String *tmp) { return (*ref)->send(thd, tmp); } void make_field(Send_field *field) { (*ref)->make_field(field); } - bool fix_fields(THD *,struct st_table_list *); - bool save_in_field(Field *field) { return (*ref)->save_in_field(field); } + bool fix_fields(THD *, struct st_table_list *, Item **); + int save_in_field(Field *field) { return (*ref)->save_in_field(field); } void save_org_in_field(Field *field) { (*ref)->save_org_in_field(field); } enum Item_result result_type () const { return (*ref)->result_type(); } table_map used_tables() const { return (*ref)->used_tables(); } @@ -417,7 +454,7 @@ class Item_int_with_ref :public Item_int public: Item_int_with_ref(longlong i, Item *ref_arg) :Item_int(i), ref(ref_arg) {} - bool save_in_field(Field *field) + int save_in_field(Field *field) { return ref->save_in_field(field); } @@ -425,12 +462,14 @@ public: }; +#include "spatial.h" #include "item_sum.h" #include "item_func.h" #include "item_cmpfunc.h" #include "item_strfunc.h" #include "item_timefunc.h" #include "item_uniq.h" +#include "item_subselect.h" class Item_copy_string :public Item { |