Class: TaskJuggler::ChargeSet

Inherits:
Object
  • Object
show all
Defined in:
lib/taskjuggler/ChargeSet.rb

Overview

A charge set describes how a given amount is distributed over a set of accounts. It stores the percentage share for each account. The accumulated percentages must always be 100% for a valid charge set. For consistency reasons, accounts must always be leaf accounts of the same top-level account. Percentage values must range from 0.0 to 1.0.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ ChargeSet

Create a new ChargeSet object.



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# File 'lib/taskjuggler/ChargeSet.rb', line 29

def initialize
  @set = {}
  @master = nil
end

Instance Attribute Details

#master ⇒ Object (readonly)

Returns the value of attribute master.



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# File 'lib/taskjuggler/ChargeSet.rb', line 26

def master
  @master
end

Instance Method Details

#addAccount(account, share) ⇒ Object

Add a new account to the set. Accounts and share rates must meet a number of requirements. This method does some error checking and raises a TjException in case of problems. It cannot check everything. Accounts can later be turned into group accounts or the total share sum may not be 100%. This needs to be checked at a later stage. Accounts may have a share of nil. This will be set in ChargeSet#complete later.



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# File 'lib/taskjuggler/ChargeSet.rb', line 40

def addAccount(, share)
  unless .leaf?
    raise TjException.new,
      "Account #{.fullId} is a group account and cannot be used " +
      "in a chargeset."
  end
  if @set.include?()
    raise TjException.new,
      "Account #{.fullId} is already a member of the charge set."
  end
  if @master.nil?
    @master = .root
  elsif @master != .root
    raise TjException.new,
      "All members of this charge set must belong to the " +
      "#{@master.fullId} account. #{.fullId} belongs to " +
      "#{.root.fullId}."
  end
  if .container?
    raise TjException.new,
      "#{.fullId} is a group account. Only leaf accounts are " +
      "allowed for a charge set."
  end
  if share && (share < 0.0 || share > 1.0)
    raise TjException.new, "Charge set shares must be between 0 and 100%"
  end
  @set[] = share
end

#complete ⇒ Object

Check for accounts that don’t have a share yet and distribute the remainder to 100% evenly accross them.



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# File 'lib/taskjuggler/ChargeSet.rb', line 77

def complete
  # Calculate the current total share.
  totalPercent = 0.0
  undefined = 0
  @set.each_value do |share|
    if share
      totalPercent += share
    else
      undefined += 1
    end
  end
  # Must be less than 100%.
  if totalPercent > 1.0
    raise TjException.new,
      "Total share of this set (#{totalPercent * 100}%) excedes 100%."
  end
  if undefined > 0
    commonShare = (1.0 - totalPercent) / undefined
    if commonShare <= 0
      raise TjException.new,
        "Total share is 100% but #{undefined} account(s) still exist."
    end
    @set.each do |, share|
      if share.nil?
        @set[] = commonShare
      end
    end
  elsif totalPercent != 1.0
    raise TjException.new,
      "Total share of this set is #{totalPercent * 100} instead of 100%."
  end
end

#each ⇒ Object 



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# File 'lib/taskjuggler/ChargeSet.rb', line 69

def each
  @set.each do |, share|
    yield , share
  end
end

#share(account) ⇒ Object

Return the share percentage for a given Account account.



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# File 'lib/taskjuggler/ChargeSet.rb', line 111

def share()
  @set[]
end

#to_s ⇒ Object

Return the set as comma separated list of account ID + share pairs.



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# File 'lib/taskjuggler/ChargeSet.rb', line 116

def to_s
  str = '('
  @set.each do |, share|
    str += ', ' unless str == '('
    str += "#{.fullId} #{share * 100}%"
  end
  str += ')'
end