Class: Solver

Inherits:
Object show all
Defined in:
lib/solvers/solvers.rb

Direct Known Subclasses

Cbc, Glpk, PCbc, PScip, Scip

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(filename) ⇒ Solver

Returns a new instance of Solver.

Raises:

  • (StandardError) 


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# File 'lib/solvers/solvers.rb', line 2

def initialize(filename)
  @filename = filename
  @outfile = get_output_filename
  raise StandardError.new("Couldn't find solver #{executable}!") if `which #{executable}`.length == 0
  @solver_exists = true
end

Class Method Details

.exists? ⇒ Boolean 



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# File 'lib/solvers/solvers.rb', line 25

def self.exists?
  return `which #{self.executable}`.length != 0
end

Instance Method Details

#executable ⇒ Object 



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

def executable
  self.class.executable
end

#get_output_filename ⇒ Object 



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# File 'lib/solvers/solvers.rb', line 9

def get_output_filename
  "/tmp/rulp-#{Random.rand(0..1000)}.sol"
end

#solver_exists? ⇒ Boolean 



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# File 'lib/solvers/solvers.rb', line 21

def solver_exists?
  @solver_exists || false
end

#store_results(variables) ⇒ Object 



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# File 'lib/solvers/solvers.rb', line 13

def store_results(variables)
  puts "Not yet implemented"
end