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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_FUNCTION_GET_USER_VAR_H
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#define DRIZZLED_FUNCTION_GET_USER_VAR_H
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#include <drizzled/function/func.h>
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class Item_func_get_user_var :public Item_func
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user_var_entry *var_entry;
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Item_result m_cached_result_type;
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LEX_STRING name; // keep it public
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Item_func_get_user_var(Session &session_arg, LEX_STRING a):
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m_cached_result_type(STRING_RESULT),
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enum Functype functype() const { return GUSERVAR_FUNC; }
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LEX_STRING get_name() { return name; }
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my_decimal *val_decimal(my_decimal*);
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String *val_str(String* str);
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void fix_length_and_dec();
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virtual void print(String *str, enum_query_type query_type);
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enum Item_result result_type() const;
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We must always return variables as strings to guard against selects of type
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select @t1:=1,@t1,@t:="hello",@t from foo where (@t1:= t2.b)
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const char *func_name() const { return "get_user_var"; }
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bool const_item() const;
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table_map used_tables() const
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{ return const_item() ? 0 : RAND_TABLE_BIT; }
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bool eq(const Item *item, bool binary_cmp) const;
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} /* namespace drizzled */
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#endif /* DRIZZLED_FUNCTION_GET_USER_VAR_H */