Class: VORuby::VOTable::V1_0::Td

Inherits:
Base show all
Includes:
Castable
Defined in:
lib/voruby/votable/1.0/votable.rb

Overview

A data element in a table row.

Constant Summary collapse

ELEMENT_NAME = 
'TD'

Instance Attribute Summary

Attributes inherited from XML::Object::Base

#node

Instance Method Summary collapse

Methods included from Castable

#as_obj, #as_string, #cast, #convert_to_s

Methods inherited from Base

#==, element_name, #get_element, #xpath_for

Methods inherited from XML::Object::Base

#==, element_name, from_file, #to_s

Constructor Details

#initialize(defn = nil) ⇒ Td

Create a new data element.

td = Td.new(:text => '123.2')



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# File 'lib/voruby/votable/1.0/votable.rb', line 1739

def initialize(defn=nil)
  super(defn)
end

Instance Method Details

#field ⇒ Object

Retrieve the Field associated with this column.



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# File 'lib/voruby/votable/1.0/votable.rb', line 1779

def field
  node_path = self.node.path
  
  # use the xpath to determine the position
  pos = (node_path =~ /TD\[\d+\]$/) ?
   node_path.split('/').last.match(/TD\[(\d+)\]$/)[1] :
   '1'
  
  field_node = self.node.find_first("../../../../*[local-name()='FIELD'][#{pos}]")
  field_node ? Field.new(field_node) : raise("Unable to associate a FIELD with this TD")
end

#ref ⇒ Object 



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# File 'lib/voruby/votable/1.0/votable.rb', line 1743

def ref
  self.node['ref']
end

#ref=(r) ⇒ Object 



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# File 'lib/voruby/votable/1.0/votable.rb', line 1747

def ref=(r)
  @node['ref'] = r.to_s
end

#text ⇒ Object

Retrieve the value of the data element as text.



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# File 'lib/voruby/votable/1.0/votable.rb', line 1752

def text
  self.node.content
end

#text=(txt) ⇒ Object

Set the value of the data element as text.



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# File 'lib/voruby/votable/1.0/votable.rb', line 1757

def text=(txt)
  @node.content = txt.to_s
end

#to_html ⇒ Object

Convert a column to HTML.

td = Td.new(:text => 'hello')
puts td.to_html # => <td>hello</td>



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# File 'lib/voruby/votable/1.0/votable.rb', line 1794

def to_html
  builder = Builder::XmlMarkup.new(:indent => 2, :margin => 5)
  
  builder.td(self.text)
end

#value ⇒ Object

Retrieve the value of the data element as an appropriate object (or list of objects), according to the datatype and arraysize of the Field corresponding to this column. See Castable#as_obj for more details.



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# File 'lib/voruby/votable/1.0/votable.rb', line 1765

def value
  cfield = self.field
  as_obj(self.text, cfield.datatype, cfield.arraysize)
end

#value=(v) ⇒ Object

Set the value of the data element. An attempt is made to convert native ruby types using the datatype and arraysize parameters of the associated Field.



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# File 'lib/voruby/votable/1.0/votable.rb', line 1773

def value=(v)
  cfield = self.field
  self.text = as_string(v, cfield.datatype, cfield.arraysize)
end