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# redMine - project management software

# Copyright (C) 2006-2008  Jean-Philippe Lang

#

# This program is free software; you can redistribute it and/or

# modify it under the terms of the GNU General Public License

# as published by the Free Software Foundation; either version 2

# of the License, or (at your option) any later version.

# 

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

# 

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

class ARCondition

  attr_reader :conditions

  def initialize(condition=nil)

    @conditions = ['1=1']

    add(condition) if condition

  end

  def add(condition)

    if condition.is_a?(Array)

      @conditions.first << " AND (#{condition.first})"

      @conditions += condition[1..-1]

    elsif condition.is_a?(String)

      @conditions.first << " AND (#{condition})"

    else

      raise "Unsupported #{condition.class} condition: #{condition}"

    end

    self

  end

  def <<(condition)

    add(condition)

  end

end