~drizzle-trunk/drizzle/development

574.3.6 by Lee
moving functions from item_strfunc to functions/str directory
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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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 *
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 *  Copyright (C) 2008 Sun Microsystems
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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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#ifndef DRIZZLED_STR_FUNCTIONS_USER_H
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#define DRIZZLED_STR_FUNCTIONS_USER_H
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#include <drizzled/functions/str/strfunc.h> 
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class Item_func_user :public Item_func_sysconst
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{
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protected:
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  bool init (const char *user, const char *host);
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public:
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  Item_func_user()
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  {
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    str_value.set("", 0, system_charset_info);
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  }
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  String *val_str(String *)
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  {
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    assert(fixed == 1);
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    return (null_value ? 0 : &str_value);
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  }
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  bool fix_fields(Session *session, Item **ref);
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  void fix_length_and_dec()
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  {
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    max_length= (USERNAME_CHAR_LENGTH + HOSTNAME_LENGTH + 1) *
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                system_charset_info->mbmaxlen;
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  }
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  const char *func_name() const { return "user"; }
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  const char *fully_qualified_func_name() const { return "user()"; }
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  int save_in_field(Field *field,
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                    bool no_conversions __attribute__((unused)))
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  {
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    return save_str_value_in_field(field, &str_value);
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  }
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};
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class Item_func_current_user :public Item_func_user
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{
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  Name_resolution_context *context;
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public:
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  Item_func_current_user(Name_resolution_context *context_arg)
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    : context(context_arg) {}
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  bool fix_fields(Session *session, Item **ref);
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  const char *func_name() const { return "current_user"; }
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  const char *fully_qualified_func_name() const { return "current_user()"; }
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};
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#endif /* DRIZZLED_STR_FUNCTIONS_USER_H */