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# redMine - project management software
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# Copyright (C) 2006-2008  Jean-Philippe Lang
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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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 Street, Fifth Floor, Boston, MA  02110-1301, USA.
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class ARCondition
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  attr_reader :conditions
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  def initialize(condition=nil)
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    @conditions = ['1=1']
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    add(condition) if condition
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  end
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  def add(condition)
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    if condition.is_a?(Array)
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      @conditions.first << " AND (#{condition.first})"
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      @conditions += condition[1..-1]
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    elsif condition.is_a?(String)
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      @conditions.first << " AND (#{condition})"
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    else
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      raise "Unsupported #{condition.class} condition: #{condition}"
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    end
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    self
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  end
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  def <<(condition)
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    add(condition)
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  end
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end
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