Module: Rews::Restriction::Xml

Defined in:
lib/rews/restriction.rb

Constant Summary collapse

COMPARISON_OPS = 
{
:< => :IsLessThan,
:<= => :IsLessThanOrEqualTo,
:== => :IsEqualTo,
:>= => :IsGreaterThanOrEqualTo,
:> => :IsGreaterThan,
:"!=" => :IsNotEqualTo}
LOGICAL_OPS = 
{
  :and => :And,
  :or => :Or,
  :not => :Not
}

Class Method Summary collapse

Class Method Details

.write_comparison(xml, expr) ⇒ Object 



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# File 'lib/rews/restriction.rb', line 55

def write_comparison(xml, expr)
  xml.t COMPARISON_OPS[expr[0]] do
    write_field_uri(xml, expr[1])
    write_field_uri_or_constant(xml, expr[2])
  end
end

.write_constant(xml, expr) ⇒ Object 



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# File 'lib/rews/restriction.rb', line 76

def write_constant(xml, expr)
  xml.t :Constant, :Value=>expr
end

.write_expr(xml, expr) ⇒ Object 



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# File 'lib/rews/restriction.rb', line 36

def write_expr(xml, expr)
  case expr[0]
  when :<, :<=, :==, :>=, :>, :"!=" then
    write_comparison(xml, expr)
  when :and, :or, :not then
    write_logical(xml, expr)
  else
    raise "unknown operator: #{expr[0]}"
  end
end

.write_field_uri(xml, expr) ⇒ Object 



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# File 'lib/rews/restriction.rb', line 72

def write_field_uri(xml, expr)
  xml.t :FieldURI, :FieldURI=>expr
end

.write_field_uri_or_constant(xml, expr) ⇒ Object 



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# File 'lib/rews/restriction.rb', line 62

def write_field_uri_or_constant(xml, expr)
  xml.t :FieldURIOrConstant do
    if expr.is_a?(Array) && expr[0] == :field_uri
      write_field_uri(xml, expr[1])
    else
      write_constant(xml, expr)
    end
  end
end

.write_logical(xml, expr) ⇒ Object 



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# File 'lib/rews/restriction.rb', line 85

def write_logical(xml, expr)
  xml.t LOGICAL_OPS[expr[0]] do
    expr[1..-1].each do |clause|
      Xml::write_expr(xml, clause)
    end
  end
end

.write_restriction(expr) ⇒ Object 



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# File 'lib/rews/restriction.rb', line 28

def write_restriction(expr)
  xml = Builder::XmlMarkup.new
  xml.wsdl :Restriction do
    write_expr(xml, expr)
  end
  xml.target!
end