~drizzle-trunk/drizzle/development

489.1.8 by Monty Taylor
Split out Item_int_func and Item_func from Item_func. (don't think too hard about the second one)
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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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 *
1999.6.1 by kalebral at gmail
update Copyright strings to a more common format to help with creating the master debian copyright file
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 *  Copyright (C) 2008 Sun Microsystems, Inc.
489.1.8 by Monty Taylor
Split out Item_int_func and Item_func from Item_func. (don't think too hard about the second one)
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 *
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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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 *
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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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 *
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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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 */
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2119.4.1 by Monty Taylor
Turns on -fvisibility=hidden by default. Symbols intended to be used by
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2234 by Brian Aker
Mass removal of ifdef/endif in favor of pragma once.
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#pragma once
489.1.8 by Monty Taylor
Split out Item_int_func and Item_func from Item_func. (don't think too hard about the second one)
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/// TODO: Rename this file - func.h is stupid.
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2154.2.4 by Brian Aker
This fixes 716459
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#include <drizzled/charset_info.h>
489.1.8 by Monty Taylor
Split out Item_int_func and Item_func from Item_func. (don't think too hard about the second one)
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#include <drizzled/item.h>
2154.2.4 by Brian Aker
This fixes 716459
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#include <drizzled/item/bin_string.h>
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#include <drizzled/lex_string.h>
489.1.8 by Monty Taylor
Split out Item_int_func and Item_func from Item_func. (don't think too hard about the second one)
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#include <drizzled/sql_list.h>
2154.2.4 by Brian Aker
This fixes 716459
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#include <drizzled/type/decimal.h>
489.1.8 by Monty Taylor
Split out Item_int_func and Item_func from Item_func. (don't think too hard about the second one)
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2173.2.1 by Monty Taylor
Fixes incorrect usage of include
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#include <drizzled/visibility.h>
2119.4.1 by Monty Taylor
Turns on -fvisibility=hidden by default. Symbols intended to be used by
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1280.1.10 by Monty Taylor
Put everything in drizzled into drizzled namespace.
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namespace drizzled
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{
489.1.8 by Monty Taylor
Split out Item_int_func and Item_func from Item_func. (don't think too hard about the second one)
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2119.4.1 by Monty Taylor
Turns on -fvisibility=hidden by default. Symbols intended to be used by
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class DRIZZLED_API Item_func :
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  public Item_result_field
489.1.8 by Monty Taylor
Split out Item_int_func and Item_func from Item_func. (don't think too hard about the second one)
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{
1633.4.7 by Brian Aker
Put a copy of the Session in the root of function to make use of.
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  Session &_session;
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489.1.8 by Monty Taylor
Split out Item_int_func and Item_func from Item_func. (don't think too hard about the second one)
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protected:
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  Item **args, *tmp_arg[2];
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  /*
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    Allowed numbers of columns in result (usually 1, which means scalar value)
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    0 means get this number from first argument
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  */
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  uint32_t allowed_arg_cols;
2154.2.19 by Brian Aker
Remove need for current_session in include.
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489.1.8 by Monty Taylor
Split out Item_int_func and Item_func from Item_func. (don't think too hard about the second one)
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public:
779.3.18 by Monty Taylor
Cleaned up warnings up through innodb.
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  using Item::split_sum_func;
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489.1.8 by Monty Taylor
Split out Item_int_func and Item_func from Item_func. (don't think too hard about the second one)
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  uint32_t arg_count;
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  table_map used_tables_cache, not_null_tables_cache;
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  bool const_item_cache;
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  enum Functype { UNKNOWN_FUNC,EQ_FUNC,EQUAL_FUNC,NE_FUNC,LT_FUNC,LE_FUNC,
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                  GE_FUNC,GT_FUNC,
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                  LIKE_FUNC,ISNULL_FUNC,ISNOTNULL_FUNC,
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                  COND_AND_FUNC, COND_OR_FUNC, COND_XOR_FUNC,
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                  BETWEEN, IN_FUNC, MULT_EQUAL_FUNC,
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                  INTERVAL_FUNC, ISNOTNULLTEST_FUNC,
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                  NOT_FUNC, NOT_ALL_FUNC,
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                  NOW_FUNC, TRIG_COND_FUNC,
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                  SUSERVAR_FUNC, GUSERVAR_FUNC, COLLATE_FUNC,
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                  EXTRACT_FUNC, CHAR_TYPECAST_FUNC, FUNC_SP,
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                  NEG_FUNC };
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  enum optimize_type { OPTIMIZE_NONE,OPTIMIZE_KEY,OPTIMIZE_OP, OPTIMIZE_NULL,
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                       OPTIMIZE_EQUAL };
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  enum Type type() const { return FUNC_ITEM; }
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  virtual enum Functype functype() const   { return UNKNOWN_FUNC; }
1022.2.29 by Monty Taylor
Fixed some no-inline warnings.
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  virtual ~Item_func() {}
1633.4.7 by Brian Aker
Put a copy of the Session in the root of function to make use of.
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2154.2.19 by Brian Aker
Remove need for current_session in include.
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  Item_func(void);
1633.4.7 by Brian Aker
Put a copy of the Session in the root of function to make use of.
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2154.2.19 by Brian Aker
Remove need for current_session in include.
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  Item_func(Item *a);
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  Item_func(Item *a,Item *b);
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  Item_func(Item *a,Item *b,Item *c);
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  Item_func(Item *a,Item *b,Item *c,Item *d);
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  Item_func(Item *a,Item *b,Item *c,Item *d,Item* e);
1633.4.7 by Brian Aker
Put a copy of the Session in the root of function to make use of.
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489.1.8 by Monty Taylor
Split out Item_int_func and Item_func from Item_func. (don't think too hard about the second one)
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  Item_func(List<Item> &list);
1633.4.7 by Brian Aker
Put a copy of the Session in the root of function to make use of.
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489.1.8 by Monty Taylor
Split out Item_int_func and Item_func from Item_func. (don't think too hard about the second one)
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  // Constructor used for Item_cond_and/or (see Item comment)
520.1.22 by Brian Aker
Second pass of thd cleanup
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  Item_func(Session *session, Item_func *item);
1633.4.7 by Brian Aker
Put a copy of the Session in the root of function to make use of.
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520.1.21 by Brian Aker
THD -> Session rename
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  bool fix_fields(Session *, Item **ref);
846 by Brian Aker
Removing on typedeffed class.
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  void fix_after_pullout(Select_Lex *new_parent, Item **ref);
489.1.8 by Monty Taylor
Split out Item_int_func and Item_func from Item_func. (don't think too hard about the second one)
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  table_map used_tables() const;
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  table_map not_null_tables() const;
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  void update_used_tables();
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  bool eq(const Item *item, bool binary_cmp) const;
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  virtual optimize_type select_optimize() const { return OPTIMIZE_NONE; }
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  virtual bool have_rev_func() const { return 0; }
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  virtual Item *key_item() const { return args[0]; }
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  /*
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    This method is used for debug purposes to print the name of an
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    item to the debug log. The second use of this method is as
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    a helper function of print(), where it is applicable.
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    To suit both goals it should return a meaningful,
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    distinguishable and sintactically correct string.  This method
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    should not be used for runtime type identification, use enum
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    {Sum}Functype and Item_func::functype()/Item_sum::sum_func()
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    instead.
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  */
1891.2.1 by Monty Taylor
Fixed things to make things compile with clang
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  virtual const char *func_name() const { return NULL; }
489.1.8 by Monty Taylor
Split out Item_int_func and Item_func from Item_func. (don't think too hard about the second one)
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  virtual bool const_item() const { return const_item_cache; }
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  Item **arguments() const { return args; }
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  void set_arguments(List<Item> &list);
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  uint32_t argument_count() const { return arg_count; }
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  void remove_arguments() { arg_count=0; }
1005.1.2 by Monty Taylor
Merged Stewart from lp:~stewart-flamingspork/drizzle/fix-function-arguments
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  /**
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   * Check if the UDF supports the number of arguments passed in
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   * @param number of args
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   */
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  virtual bool check_argument_count(int) { return true ; }
779.3.16 by Monty Taylor
Some Sun warning fixes.
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  virtual void split_sum_func(Session *session, Item **ref_pointer_array,
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                              List<Item> &fields);
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2215.2.1 by Stewart Smith
remove enum_query_type which was effectively unused. It was set to one value once, compared to it once (i.e. always true) and passed around everywhere doing nothing.
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  virtual void print(String *str);
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  void print_op(String *str);
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  void print_args(String *str, uint32_t from);
489.1.8 by Monty Taylor
Split out Item_int_func and Item_func from Item_func. (don't think too hard about the second one)
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  virtual void fix_num_length_and_dec();
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  void count_only_length();
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  void count_real_length();
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  void count_decimal_length();
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2104.2.8 by Brian Aker
Merge in reference from pointer.
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  bool get_arg0_date(type::Time &ltime, uint32_t fuzzy_date);
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  bool get_arg0_time(type::Time &ltime);
489.1.8 by Monty Taylor
Split out Item_int_func and Item_func from Item_func. (don't think too hard about the second one)
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  bool is_null();
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2060 by Brian Aker
Added native functions into the function table.
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  virtual bool deterministic() const
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  {
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    return false;
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  }
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489.1.8 by Monty Taylor
Split out Item_int_func and Item_func from Item_func. (don't think too hard about the second one)
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  void signal_divide_by_null();
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779.3.16 by Monty Taylor
Some Sun warning fixes.
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  virtual Field *tmp_table_field() { return result_field; }
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  virtual Field *tmp_table_field(Table *t_arg);
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520.1.22 by Brian Aker
Second pass of thd cleanup
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  Item *get_tmp_table_item(Session *session);
489.1.8 by Monty Taylor
Split out Item_int_func and Item_func from Item_func. (don't think too hard about the second one)
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2030.1.4 by Brian Aker
Change my_decimal to Decimal
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  type::Decimal *val_decimal(type::Decimal *);
489.1.8 by Monty Taylor
Split out Item_int_func and Item_func from Item_func. (don't think too hard about the second one)
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  bool agg_arg_collations(DTCollation &c, Item **items, uint32_t nitems,
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                          uint32_t flags);
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  bool agg_arg_collations_for_comparison(DTCollation &c,
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                                         Item **items, uint32_t nitems,
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                                         uint32_t flags);
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  bool agg_arg_charsets(DTCollation &c, Item **items, uint32_t nitems,
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                        uint32_t flags, int item_sep);
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  bool walk(Item_processor processor, bool walk_subquery, unsigned char *arg);
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  Item *transform(Item_transformer transformer, unsigned char *arg);
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  Item* compile(Item_analyzer analyzer, unsigned char **arg_p,
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                Item_transformer transformer, unsigned char *arg_t);
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  void traverse_cond(Cond_traverser traverser,
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                     void * arg, traverse_order order);
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  double fix_result(double value);
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1633.4.7 by Brian Aker
Put a copy of the Session in the root of function to make use of.
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  Session &getSession()
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  {
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    return _session;
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  }
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  Session *getSessionPtr()
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  {
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    return &_session;
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  }
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489.1.8 by Monty Taylor
Split out Item_int_func and Item_func from Item_func. (don't think too hard about the second one)
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};
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1280.1.10 by Monty Taylor
Put everything in drizzled into drizzled namespace.
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} /* namespace drizzled */
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489.1.8 by Monty Taylor
Split out Item_int_func and Item_func from Item_func. (don't think too hard about the second one)
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