diff options
Diffstat (limited to 'sql/item.h')
| -rw-r--r-- | sql/item.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/sql/item.h b/sql/item.h index 1bfd0b529f2..c3c5b512722 100644 --- a/sql/item.h +++ b/sql/item.h @@ -2151,6 +2151,11 @@ public: return ((this->*transformer) (thd, arg_t)); return 0; } + virtual Item* top_level_compile(THD *thd, Item_analyzer analyzer, uchar **arg_p, + Item_transformer transformer, uchar *arg_t) + { + return compile(thd, analyzer, arg_p, transformer, arg_t); + } virtual void traverse_cond(Cond_traverser traverser, void *arg, traverse_order order) @@ -6190,6 +6195,14 @@ public: Item_direct_ref::save_in_result_field(no_conversions); } + int save_in_field(Field *field, bool no_conversions) override + { + if (check_null_ref()) + return set_field_to_null_with_conversions(field, no_conversions); + + return Item_direct_ref::save_in_field(field, no_conversions); + } + void cleanup() override { null_ref_table= NULL; @@ -7788,6 +7801,104 @@ inline void Virtual_column_info::print(String* str) expr->print_for_table_def(str); } +class Item_direct_ref_to_item : public Item_direct_ref +{ + Item *m_item; +public: + Item_direct_ref_to_item(THD *thd, Item *item); + + void change_item(THD *thd, Item *); + + bool fix_fields(THD *thd, Item **it); + + void print(String *str, enum_query_type query_type); + + Item *safe_charset_converter(THD *thd, CHARSET_INFO *tocs); + Item *get_tmp_table_item(THD *thd) + { return m_item->get_tmp_table_item(thd); } + Item *get_copy(THD *thd) + { return m_item->get_copy(thd); } + COND *build_equal_items(THD *thd, COND_EQUAL *inherited, + bool link_item_fields, + COND_EQUAL **cond_equal_ref) + { + return m_item->build_equal_items(thd, inherited, link_item_fields, + cond_equal_ref); + } + const char *full_name() const { return m_item->full_name(); } + void make_send_field(THD *thd, Send_field *field) + { m_item->make_send_field(thd, field); } + bool eq(const Item *item, bool binary_cmp) const + { + Item *it= ((Item *) item)->real_item(); + return m_item->eq(it, binary_cmp); + } + void fix_after_pullout(st_select_lex *new_parent, Item **refptr, bool merge) + { m_item->fix_after_pullout(new_parent, &m_item, merge); } + void save_val(Field *to) + { return m_item->save_val(to); } + void save_result(Field *to) + { return m_item->save_result(to); } + int save_in_field(Field *to, bool no_conversions) + { return m_item->save_in_field(to, no_conversions); } + const Type_handler *type_handler() const { return m_item->type_handler(); } + table_map used_tables() const { return m_item->used_tables(); } + void update_used_tables() + { m_item->update_used_tables(); } + bool const_item() const { return m_item->const_item(); } + table_map not_null_tables() const { return m_item->not_null_tables(); } + bool walk(Item_processor processor, bool walk_subquery, void *arg) + { + return m_item->walk(processor, walk_subquery, arg) || + (this->*processor)(arg); + } + bool enumerate_field_refs_processor(void *arg) + { return m_item->enumerate_field_refs_processor(arg); } + Item_field *field_for_view_update() + { return m_item->field_for_view_update(); } + + /* Row emulation: forwarding of ROW-related calls to orig_item */ + uint cols() const + { return m_item->cols(); } + Item* element_index(uint i) + { return this; } + Item** addr(uint i) + { return &m_item; } + bool check_cols(uint c) + { return Item::check_cols(c); } + bool null_inside() + { return m_item->null_inside(); } + void bring_value() + {} + + Item_equal *get_item_equal() { return m_item->get_item_equal(); } + void set_item_equal(Item_equal *item_eq) { m_item->set_item_equal(item_eq); } + Item_equal *find_item_equal(COND_EQUAL *cond_equal) + { return m_item->find_item_equal(cond_equal); } + Item *propagate_equal_fields(THD *thd, const Context &ctx, COND_EQUAL *cond) + { return m_item->propagate_equal_fields(thd, ctx, cond); } + Item *replace_equal_field(THD *thd, uchar *arg) + { return m_item->replace_equal_field(thd, arg); } + + bool excl_dep_on_table(table_map tab_map) + { return m_item->excl_dep_on_table(tab_map); } + bool excl_dep_on_grouping_fields(st_select_lex *sel) + { return m_item->excl_dep_on_grouping_fields(sel); } + bool is_expensive() { return m_item->is_expensive(); } + Item* build_clone(THD *thd) { return get_copy(thd); } + + void split_sum_func(THD *thd, Ref_ptr_array ref_pointer_array, + List<Item> &fields, uint flags) + { + m_item->split_sum_func(thd, ref_pointer_array, fields, flags); + } + /* + This processor states that this is safe for virtual columns + (because this Item transparency) + */ + bool check_vcol_func_processor(void *arg) { return FALSE;} +}; + inline bool TABLE::mark_column_with_deps(Field *field) { bool res; |