Class: Rake::EventTask

Inherits:
FileTask
  • Object
show all
Defined in:
lib/biorake.rb

Overview

######################################################################### An EventTask is a task that includes time based dependencies with no associated file. Timestamps are contained in the .rake directory. If any of a DataTask’s prerequisites have a timestamp that is later than the represented by this task, then the file must be rebuilt (using the supplied actions).

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.clean ⇒ Object 



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# File 'lib/biorake.rb', line 59

def clean
  FileUtils.rm_rf ".rake"
end

.scope_name(scope, task_name) ⇒ Object

Apply the scope to the task name according to the rules for this kind of task. File based tasks ignore the scope when creating the name.



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# File 'lib/biorake.rb', line 50

def scope_name(scope, task_name)
  task_name
end

.touch(fn) ⇒ Object 



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# File 'lib/biorake.rb', line 54

def touch(fn)
  FileUtils.mkdir_p ".rake"
  FileUtils.touch ".rake/#{fn}"
end

Instance Method Details

#execute(args = nil) ⇒ Object 



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# File 'lib/biorake.rb', line 32

def execute(args=nil)
  super(args)
  # And save the timestamp in storage
  EventTask.touch(name.to_s)
end

#needed? ⇒ Boolean

Is this data task needed? Yes if it doesn’t exist, or if its time stamp is out of date.

Returns:

  • (Boolean) 


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# File 'lib/biorake.rb', line 17

def needed?
  return true if !File.exist?(taskfn)
  return true if out_of_date?(timestamp)
  false
end

#timestamp ⇒ Object

Time stamp for data task.



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# File 'lib/biorake.rb', line 24

def timestamp      
  if(File.exist?(taskfn))
    File.mtime(taskfn)
  else
    Rake::EARLY
  end
end