Class: VORuby::VOTable::V1_1::Td

Inherits:
Base show all
Includes:
Castable
Defined in:
lib/voruby/votable/1.1/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')



2030
2031
2032
 
# File 'lib/voruby/votable/1.1/votable.rb', line 2030

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

Instance Method Details

#encoding ⇒ Object 



2034
2035
2036
 
# File 'lib/voruby/votable/1.1/votable.rb', line 2034

def encoding
  self.node['encoding']
end

#encoding=(e) ⇒ Object 



2038
2039
2040
 
# File 'lib/voruby/votable/1.1/votable.rb', line 2038

def encoding=(e)
  @node['encoding'] = e.to_s
end

#field ⇒ Object

Retrieve the Field associated with this column.



2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
 
# File 'lib/voruby/votable/1.1/votable.rb', line 2070

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

#text ⇒ Object

Retrieve the value of the data element as text.



2043
2044
2045
 
# File 'lib/voruby/votable/1.1/votable.rb', line 2043

def text
  self.node.content
end

#text=(txt) ⇒ Object

Set the value of the data element as text.



2048
2049
2050
 
# File 'lib/voruby/votable/1.1/votable.rb', line 2048

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>



2085
2086
2087
2088
2089
 
# File 'lib/voruby/votable/1.1/votable.rb', line 2085

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.



2056
2057
2058
2059
 
# File 'lib/voruby/votable/1.1/votable.rb', line 2056

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.



2064
2065
2066
2067
 
# File 'lib/voruby/votable/1.1/votable.rb', line 2064

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