diff options
Diffstat (limited to 'sql/item.h')
| -rw-r--r-- | sql/item.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/sql/item.h b/sql/item.h index 466f8d15df8..bd72fed5300 100644 --- a/sql/item.h +++ b/sql/item.h @@ -707,6 +707,45 @@ protected: bool fixed_length, bool set_blob_packlength); Field *create_tmp_field(bool group, TABLE *table, uint convert_int_length); + /* Helper methods, to get an Item value from another Item */ + double val_real_from_item(Item *item) + { + DBUG_ASSERT(fixed == 1); + double value= item->val_real(); + null_value= item->null_value; + return value; + } + longlong val_int_from_item(Item *item) + { + DBUG_ASSERT(fixed == 1); + longlong value= item->val_int(); + null_value= item->null_value; + return value; + } + String *val_str_from_item(Item *item, String *str) + { + DBUG_ASSERT(fixed == 1); + String *res= item->val_str(str); + if (res) + res->set_charset(collation.collation); + if ((null_value= item->null_value)) + res= NULL; + return res; + } + my_decimal *val_decimal_from_item(Item *item, my_decimal *decimal_value) + { + DBUG_ASSERT(fixed == 1); + my_decimal *value= item->val_decimal(decimal_value); + if ((null_value= item->null_value)) + value= NULL; + return value; + } + bool get_date_from_item(Item *item, MYSQL_TIME *ltime, ulonglong fuzzydate) + { + bool rc= item->get_date(ltime, fuzzydate); + null_value= MY_TEST(rc || item->null_value); + return rc; + } /* This method is used if the item was not null but convertion to TIME/DATE/DATETIME failed. We return a zero date if allowed, @@ -2862,6 +2901,10 @@ public: { return result_field->type(); } + CHARSET_INFO *charset_for_protocol(void) const + { + return collation.collation; + } #else const Type_handler *type_handler() const { @@ -4361,6 +4404,12 @@ public: void save_org_in_field(Field *field, fast_field_copier optimizer_data); fast_field_copier setup_fast_field_copier(Field *field) { return (*ref)->setup_fast_field_copier(field); } +#if MARIADB_VERSION_ID < 100300 + CHARSET_INFO *charset_for_protocol(void) const + { + return (*ref)->charset_for_protocol(); + } +#endif enum Item_result result_type () const { return (*ref)->result_type(); } enum_field_types field_type() const { return (*ref)->field_type(); } Field *get_tmp_table_field() |