diff options
Diffstat (limited to 'sql/item.h')
| -rw-r--r-- | sql/item.h | 136 |
1 files changed, 119 insertions, 17 deletions
diff --git a/sql/item.h b/sql/item.h index 4201978201b..4f1bd10612a 100644 --- a/sql/item.h +++ b/sql/item.h @@ -18,6 +18,24 @@ #pragma interface /* gcc class implementation */ #endif +inline +bool trace_unsupported_func(const char *where, const char *processor_name) +{ + char buff[64]; + sprintf(buff, "%s::%s", where, processor_name); + DBUG_ENTER(buff); + sprintf(buff, "%s returns TRUE: unsupported function", processor_name); + DBUG_PRINT("info", ("%s", buff)); + DBUG_RETURN(TRUE); +} + +inline +bool trace_unsupported_by_check_vcol_func_processor(const char *where) +{ + return trace_unsupported_func(where, "check_vcol_func_processor"); +} + + class Protocol; struct TABLE_LIST; void item_init(void); /* Init item functions */ @@ -522,19 +540,19 @@ public: uint name_length; /* Length of name */ int8 marker; uint8 decimals; - my_bool maybe_null; /* If item may be null */ - my_bool in_rollup; /* If used in GROUP BY list + bool maybe_null; /* If item may be null */ + bool in_rollup; /* If used in GROUP BY list of a query with ROLLUP */ - my_bool null_value; /* if item is null */ - my_bool unsigned_flag; - my_bool with_sum_func; - my_bool fixed; /* If item fixed with fix_fields */ - my_bool is_autogenerated_name; /* indicate was name of this Item + bool null_value; /* if item is null */ + bool unsigned_flag; + bool with_sum_func; + bool fixed; /* If item fixed with fix_fields */ + bool is_autogenerated_name; /* indicate was name of this Item autogenerated or set by user */ - DTCollation collation; - my_bool with_subselect; /* If this item is a subselect or some + bool with_subselect; /* If this item is a subselect or some of its arguments is or contains a subselect */ + DTCollation collation; Item_result cmp_context; /* Comparison context */ // alloc & destruct is done as start of select using sql_alloc Item(); @@ -938,6 +956,11 @@ public: return FALSE; } /* + The next function differs from the previous one that a bitmap to be updated + is passed as uchar *arg. + */ + virtual bool register_field_in_bitmap(uchar *arg) { return 0; } + /* Check if a partition function is allowed SYNOPSIS check_partition_func_processor() @@ -989,11 +1012,43 @@ public: fields. */ virtual bool check_partition_func_processor(uchar *bool_arg) { return TRUE;} + /* + @brief + Processor used to mark virtual columns used in partitioning expression + + @param + arg always ignored + + @retval + FALSE always + */ + virtual bool vcol_in_partition_func_processor(uchar *arg) + { + return FALSE; + } + virtual bool subst_argument_checker(uchar **arg) - { + { if (*arg) - *arg= NULL; - return TRUE; + *arg= NULL; + return TRUE; + } + /* + @brief + Processor used to check acceptability of an item in the defining + expression for a virtual column + + @param + arg always ignored + + @retval + FALSE the item is accepted in the definition of a virtual column + @retval + TRUE otherwise + */ + virtual bool check_vcol_func_processor(uchar *arg) + { + return trace_unsupported_by_check_vcol_func_processor(full_name()); } virtual Item *equal_fields_propagator(uchar * arg) { return this; } @@ -1402,6 +1457,10 @@ public: { return value_item->send(protocol, str); } + bool check_vcol_func_processor(uchar *arg) + { + return trace_unsupported_by_check_vcol_func_processor("name_const"); + } }; bool agg_item_collations(DTCollation &c, const char *name, @@ -1421,6 +1480,7 @@ public: virtual Item_num *neg()= 0; Item *safe_charset_converter(CHARSET_INFO *tocs); bool check_partition_func_processor(uchar *int_arg) { return FALSE;} + bool check_vcol_func_processor(uchar *arg) { return FALSE;} }; #define NO_CACHED_FIELD_INDEX ((uint)(-1)) @@ -1581,7 +1641,10 @@ public: bool collect_item_field_processor(uchar * arg); bool find_item_in_field_list_processor(uchar *arg); bool register_field_in_read_map(uchar *arg); + bool register_field_in_bitmap(uchar *arg); bool check_partition_func_processor(uchar *int_arg) {return FALSE;} + bool vcol_in_partition_func_processor(uchar *bool_arg); + bool check_vcol_func_processor(uchar *arg) { return FALSE;} bool enumerate_field_refs_processor(uchar *arg); void cleanup(); bool result_as_longlong() @@ -1642,6 +1705,7 @@ public: Item *safe_charset_converter(CHARSET_INFO *tocs); bool check_partition_func_processor(uchar *int_arg) {return FALSE;} + bool check_vcol_func_processor(uchar *arg) { return FALSE;} }; class Item_null_result :public Item_null @@ -1655,7 +1719,11 @@ public: save_in_field(result_field, no_conversions); } bool check_partition_func_processor(uchar *int_arg) {return TRUE;} -}; + bool check_vcol_func_processor(uchar *arg) + { + return trace_unsupported_by_check_vcol_func_processor(full_name()); + } +}; /* Item represents one placeholder ('?') of prepared statement */ @@ -1796,6 +1864,7 @@ public: /** Item is a argument to a limit clause. */ bool limit_clause_param; void set_param_type_and_swap_value(Item_param *from); + }; @@ -1831,6 +1900,7 @@ public: { return (uint)(max_length - test(value < 0)); } bool eq(const Item *, bool binary_cmp) const; bool check_partition_func_processor(uchar *bool_arg) { return FALSE;} + bool check_vcol_func_processor(uchar *arg) { return FALSE;} }; @@ -1849,6 +1919,7 @@ public: Item_num *neg (); uint decimal_precision() const { return max_length; } bool check_partition_func_processor(uchar *bool_arg) { return FALSE;} + bool check_vcol_func_processor(uchar *arg) { return FALSE;} }; @@ -1890,6 +1961,7 @@ public: bool eq(const Item *, bool binary_cmp) const; void set_decimal_value(my_decimal *value_par); bool check_partition_func_processor(uchar *bool_arg) { return FALSE;} + bool check_vcol_func_processor(uchar *arg) { return FALSE;} }; @@ -2047,6 +2119,7 @@ public: } virtual void print(String *str, enum_query_type query_type); bool check_partition_func_processor(uchar *int_arg) {return FALSE;} + bool check_vcol_func_processor(uchar *arg) { return FALSE;} /** Return TRUE if character-set-introducer was explicitly specified in the @@ -2100,7 +2173,7 @@ double_from_string_with_check (CHARSET_INFO *cs, const char *cptr, char *end); class Item_static_string_func :public Item_string { const char *func_name; -public: + public: Item_static_string_func(const char *name_par, const char *str, uint length, CHARSET_INFO *cs, Derivation dv= DERIVATION_COERCIBLE) @@ -2114,6 +2187,10 @@ public: } bool check_partition_func_processor(uchar *int_arg) {return TRUE;} + bool check_vcol_func_processor(uchar *arg) + { + return trace_unsupported_by_check_vcol_func_processor(func_name); + } }; @@ -2125,6 +2202,10 @@ public: CHARSET_INFO *cs= NULL): Item_string(name_arg, length, cs) {} + bool check_vcol_func_processor(uchar *arg) + { + return trace_unsupported_by_check_vcol_func_processor("safe_string"); + } }; @@ -2204,6 +2285,7 @@ public: bool eq(const Item *item, bool binary_cmp) const; virtual Item *safe_charset_converter(CHARSET_INFO *tocs); bool check_partition_func_processor(uchar *int_arg) {return FALSE;} + bool check_vcol_func_processor(uchar *arg) { return FALSE;} private: void hex_string_init(const char *str, uint str_length); }; @@ -2236,6 +2318,7 @@ public: save_in_field(result_field, no_conversions); } void cleanup(); + bool check_vcol_func_processor(uchar *arg) { return FALSE;} /* This method is used for debug purposes to print the name of an item to the debug log. The second use of this method is as @@ -2395,12 +2478,15 @@ public: if (ref && result_type() == ROW_RESULT) (*ref)->bring_value(); } + bool check_vcol_func_processor(uchar *arg) + { + return trace_unsupported_by_check_vcol_func_processor("ref"); + } bool get_time(MYSQL_TIME *ltime) { DBUG_ASSERT(fixed); return (*ref)->get_time(ltime); } - }; @@ -2577,7 +2663,7 @@ class Item_int_with_ref :public Item_int { Item *ref; public: - Item_int_with_ref(longlong i, Item *ref_arg, my_bool unsigned_arg) : + Item_int_with_ref(longlong i, Item *ref_arg, bool unsigned_arg) : Item_int(i), ref(ref_arg) { unsigned_flag= unsigned_arg; @@ -2689,6 +2775,10 @@ public: table_map used_tables() const { return (table_map) 1L; } bool const_item() const { return 0; } bool is_null() { return null_value; } + bool check_vcol_func_processor(uchar *arg) + { + return trace_unsupported_by_check_vcol_func_processor("copy"); + } /* Override the methods below as pure virtual to make sure all the @@ -2807,7 +2897,7 @@ public: class Cached_item :public Sql_alloc { public: - my_bool null_value; + bool null_value; Cached_item() :null_value(0) {} virtual bool cmp(void)=0; virtual ~Cached_item(); /*line -e1509 */ @@ -2933,6 +3023,10 @@ public: return arg->walk(processor, walk_subquery, args) || (this->*processor)(args); } + bool check_vcol_func_processor(uchar *arg) + { + return trace_unsupported_by_check_vcol_func_processor("values"); + } }; @@ -3029,6 +3123,10 @@ private: BEFORE INSERT of BEFORE UPDATE trigger. */ bool read_only; + virtual bool check_vcol_func_processor(uchar *arg) + { + return trace_unsupported_by_check_vcol_func_processor("trigger"); + } }; @@ -3097,6 +3195,10 @@ public: { return this == item; } + bool check_vcol_func_processor(uchar *arg) + { + return trace_unsupported_by_check_vcol_func_processor("cache"); + } /** If this item caches a field value, return pointer to underlying field. |