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by brian
clean slate |
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/* Copyright (C) 2000 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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class Item_row: public Item |
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{
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Item **items; |
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table_map used_tables_cache; |
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uint arg_count; |
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bool const_item_cache; |
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bool with_null; |
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public: |
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Item_row(List<Item> &); |
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Item_row(Item_row *item): |
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Item(), |
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items(item->items), |
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used_tables_cache(item->used_tables_cache), |
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arg_count(item->arg_count), |
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const_item_cache(item->const_item_cache), |
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with_null(0) |
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{}
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enum Type type() const { return ROW_ITEM; }; |
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void illegal_method_call(const char *); |
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bool is_null() { return null_value; } |
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void make_field(Send_field *) |
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{
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illegal_method_call((const char*)"make_field"); |
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};
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double val_real() |
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{
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illegal_method_call((const char*)"val"); |
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return 0; |
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};
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longlong val_int() |
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{
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illegal_method_call((const char*)"val_int"); |
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return 0; |
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};
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String *val_str(String *) |
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{
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illegal_method_call((const char*)"val_str"); |
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return 0; |
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};
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my_decimal *val_decimal(my_decimal *) |
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{
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illegal_method_call((const char*)"val_decimal"); |
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return 0; |
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};
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bool fix_fields(THD *thd, Item **ref); |
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void fix_after_pullout(st_select_lex *new_parent, Item **ref); |
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void cleanup(); |
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void split_sum_func(THD *thd, Item **ref_pointer_array, List<Item> &fields); |
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table_map used_tables() const { return used_tables_cache; }; |
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bool const_item() const { return const_item_cache; }; |
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enum Item_result result_type() const { return ROW_RESULT; } |
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void update_used_tables(); |
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virtual void print(String *str, enum_query_type query_type); |
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bool walk(Item_processor processor, bool walk_subquery, uchar *arg); |
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Item *transform(Item_transformer transformer, uchar *arg); |
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uint cols() { return arg_count; } |
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Item* element_index(uint i) { return items[i]; } |
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Item** addr(uint i) { return items + i; } |
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bool check_cols(uint c); |
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bool null_inside() { return with_null; }; |
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void bring_value(); |
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};
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