Class: Twb::FieldCalculation

Inherits:
Object
  • Object
show all
Defined in:
lib/twb/fieldcalculation.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(calcNode) ⇒ FieldCalculation

Returns a new instance of FieldCalculation.



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# File 'lib/twb/fieldcalculation.rb', line 24

def initialize calcNode
  #puts "CALCNODE:: '#{calcNode}' -> #{calcNode.class}"
  if calcNode
    @node       = calcNode
   #-- Calculation --
    formulaCode     = calcNode.xpath('./@formula').text.gsub(/\r\n/, ' ')
    formulaLines    = calcNode.xpath('./@formula').text.split(/\r\n/)
    @formula        = getFormula(  formulaLines )
    @comments       = getComments( formulaLines )
    @class          = calcNode.xpath('./@class').text
    @scopeIsolation = calcNode.xpath('./@scope-isolation').text
   #-- Fields      --
    @fields   = parseFieldsFromFormula(formulaCode)
  end
end

Instance Attribute Details

#class ⇒ Object (readonly)

Returns the value of attribute class.



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# File 'lib/twb/fieldcalculation.rb', line 22

def class
  @class
end

#comments ⇒ Object (readonly)

Returns the value of attribute comments.



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# File 'lib/twb/fieldcalculation.rb', line 22

def comments
  @comments
end

#fields ⇒ Object (readonly)

Returns the value of attribute fields.



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# File 'lib/twb/fieldcalculation.rb', line 22

def fields
  @fields
end

#formula ⇒ Object (readonly)

Returns the value of attribute formula.



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# File 'lib/twb/fieldcalculation.rb', line 22

def formula
  @formula
end

#node ⇒ Object (readonly)

Returns the value of attribute node.



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# File 'lib/twb/fieldcalculation.rb', line 22

def node
  @node
end

Instance Method Details

#getComments(lines) ⇒ Object 



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# File 'lib/twb/fieldcalculation.rb', line 62

def getComments lines
  comments = ''
  lines.each do |line|
    if line =~ /\/\// then
      comments += ' ' + line.gsub(/^.*\/\//,'// ')
    end
  end
  return comments.strip
end

#getFormula(lines) ⇒ Object 



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# File 'lib/twb/fieldcalculation.rb', line 53

def getFormula lines
  formula = ''
  lines.each do |line|
      line.strip
      formula += ' ' + line.gsub(/\/\/.*/, '') # unless line =~ /^[ ]*\/\//
  end
  return formula.strip
end

#parseFieldsFromFormula(formula) ⇒ Object 



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# File 'lib/twb/fieldcalculation.rb', line 40

def parseFieldsFromFormula formula
  fieldSet = Set.new []
  if formula =~ /\[.+\]/ then
      stripFrt =  formula.gsub( /^[^\[]*[\[]/    , '['      )
      stripBck = stripFrt.gsub( /\][^\]]+$/      , ']'      )
      stripMid = stripBck.gsub( /\][^\]]{2,}\[/  , ']]..[[' )
      stripCom = stripMid.gsub( /\][ ]*,[ ]*\[/  , ']]..[[' )
      fields   = stripCom.split(']..[')
      fields.each { |field| fieldSet.add field}
  end
  return fieldSet
end