type file { } 

(file result_A) process_A (file input_A) {
	app { 
		blackbox_A "string_param_A" @filename(input_A) stdout=@filename(result_A);
	}		
}

(file result_B) process_B (file input_B) {
	app { 
		blackbox_B "string_param_B" @filename(input_B) stdout=@filename(result_B);
	}		
}

(file result_C) process_C (file input_C) {
	app { 
		blackbox_C "string_param_C" @filename(input_C) stdout=@filename(result_C);
	}		
}

(file outputFromSplitter) splitter(file inputToSplitter) { 
	outputFromSplitter = process_A(inputToSplitter);
	inputToSplitter    = process_A(outputFromSplitter);
	outputFromSplitter = process_A(inputToSplitter);
}

file input_to_A <simple_mapper; prefix="input/input_A", suffix=".txt">;
file output_from_A <simple_mapper; prefix="output/output_A", suffix=".txt">;
file output_from_B <simple_mapper; prefix="output/output_B", suffix=".txt">;
file output_from_C <simple_mapper; prefix="output/output_C", suffix=".txt">;

input_to_A = splitter(input_to_A);
output_from_A = process_A(input_to_A);
output_from_B = process_B(output_from_A);
output_from_C = process_C(output_from_B);