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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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* Copyright (C) 2008 Sun Microsystems
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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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#ifndef DRIZZLED_ITEM_FIELD_H
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#define DRIZZLED_ITEM_FIELD_H
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extern Item **not_found_item;
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class Item_field :public Item_ident
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void set_field(Field *field);
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Field *field,*result_field;
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Item_equal *item_equal;
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if any_privileges set to true then here real effective privileges will
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uint32_t have_privileges;
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/* field need any privileges (for VIEW creation) */
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Item_field(Name_resolution_context *context_arg,
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const char *db_arg,const char *table_name_arg,
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const char *field_name_arg);
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Constructor needed to process subselect with temporary tables (see Item)
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Item_field(Session *session, Item_field *item);
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Constructor used inside setup_wild(), ensures that field, table,
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and database names will live as long as Item_field (this is important
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in prepared statements).
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Item_field(Session *session, Name_resolution_context *context_arg, Field *field);
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If this constructor is used, fix_fields() won't work, because
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db_name, table_name and column_name are unknown. It's necessary to call
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reset_field() before fix_fields() for all fields created this way.
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Item_field(Field *field);
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enum Type type() const { return FIELD_ITEM; }
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bool eq(const Item *item, bool binary_cmp) const;
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my_decimal *val_decimal(my_decimal *);
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String *val_str(String*);
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int64_t val_int_result();
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String *str_result(String* tmp);
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my_decimal *val_decimal_result(my_decimal *);
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bool val_bool_result();
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bool send(Protocol *protocol, String *str_arg);
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void reset_field(Field *f);
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bool fix_fields(Session *, Item **);
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void fix_after_pullout(Select_Lex *new_parent, Item **ref);
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void make_field(SendField *tmp_field);
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int save_in_field(Field *field,bool no_conversions);
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void save_org_in_field(Field *field);
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table_map used_tables() const;
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enum Item_result result_type () const;
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Item_result cast_to_int_type() const;
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enum_field_types field_type() const;
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int64_t val_int_endpoint(bool left_endp, bool *incl_endp);
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Field *get_tmp_table_field() { return result_field; }
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Field *tmp_table_field(Table *) { return result_field; }
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bool get_date(DRIZZLE_TIME *ltime,uint32_t fuzzydate);
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bool get_date_result(DRIZZLE_TIME *ltime,uint32_t fuzzydate);
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bool get_time(DRIZZLE_TIME *ltime);
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void update_null_value();
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Item *get_tmp_table_item(Session *session);
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bool collect_item_field_processor(unsigned char * arg);
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bool find_item_in_field_list_processor(unsigned char *arg);
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bool register_field_in_read_map(unsigned char *arg);
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bool result_as_int64_t();
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Item_equal *find_item_equal(COND_EQUAL *cond_equal);
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bool subst_argument_checker(unsigned char **arg);
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Item *equal_fields_propagator(unsigned char *arg);
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bool set_no_const_sub(unsigned char *arg);
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Item *replace_equal_field(unsigned char *arg);
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uint32_t max_disp_length();
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Item_field *filed_for_view_update() { return this; }
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Item *safe_charset_converter(const CHARSET_INFO * const tocs);
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int fix_outer_field(Session *session, Field **field, Item **reference);
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virtual Item *update_value_transformer(unsigned char *select_arg);
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virtual void print(String *str, enum_query_type query_type);
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friend class Item_default_value;
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friend class Item_insert_value;
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friend class Select_Lex_Unit;
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#endif /* DRIZZLED_ITEM_FIELD_H */