Class: VORuby::ADQL::V1_0::UserDefinedFunction

Inherits:
ScalarExpression show all
Defined in:
lib/voruby/adql/1.0/adql.rb

Overview

Represents user defined function expressions

Defined Under Namespace

Classes: ListOfScalarExpression

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from SerializableToXml

#element

Constructor Details

#initialize(name, params = nil) ⇒ UserDefinedFunction

Returns a new instance of UserDefinedFunction.



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# File 'lib/voruby/adql/1.0/adql.rb', line 630

def initialize(name, params=nil)
  self.name = name
  self.params = params
end

Instance Attribute Details

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/voruby/adql/1.0/adql.rb', line 626

def name
  @name
end

#params ⇒ Object

Returns the value of attribute params.



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# File 'lib/voruby/adql/1.0/adql.rb', line 626

def params
  @params
end

Class Method Details

.from_xml(xml) ⇒ Object 



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# File 'lib/voruby/adql/1.0/adql.rb', line 673

def self.from_xml(xml)
  root = element_from(xml)
  
  params_el = REXML::XPath.match(root, 'x:Params', {'x' => obj_ns.uri})
  params = params_el ?
    UserDefinedFunction::ListOfScalarExpression.new(params_el.collect{ |pel| xml_to_obj(pel) }) :
    nil
  
  self.new(
    REXML::XPath.first(root, 'x:Name', {'x' => obj_ns.uri}).text,
    params
  )
end

.xml_type ⇒ Object 



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# File 'lib/voruby/adql/1.0/adql.rb', line 628

def self.xml_type; 'userDefinedFunctionType' end

Instance Method Details

#==(f) ⇒ Object 



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# File 'lib/voruby/adql/1.0/adql.rb', line 649

def ==(f)
  self.name == f.name and
  self.params == f.params
end

#to_s ⇒ Object 



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# File 'lib/voruby/adql/1.0/adql.rb', line 654

def to_s
  s = "#{self.name}("
  s << self.params.collect{ |p| p.to_s }.join(', ') if self.params
  s << ')'
  s
end

#to_xml(name = nil) ⇒ Object 



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# File 'lib/voruby/adql/1.0/adql.rb', line 661

def to_xml(name=nil)
  el = super(name)
  
  name_el = REXML::Element.new("#{obj_ns.prefix}:Name")
  name_el.text = self.name
  el.add_element(name_el)
  
  self.params.each{ |p| el.add_element(p.to_xml('Params'))} if self.params
  
  el
end