jdeferred example

SimpleParser.java

import java.util.Arrays;

import org.jdeferred2.Deferred;
import org.jdeferred2.DonePipe;
import org.jdeferred2.Promise;
import org.jdeferred2.impl.DeferredObject;

public class SimpleParser
{

	private final Deferred<String[], String, String> deferred = new DeferredObject<>();

	public Promise<String[], String, String> parse(String source)
	{
		if (source.contains(" "))
		{
			return deferred.reject("Spaces not allowed.");
		}
		
		return deferred.resolve(source.split(","));
	}

	public static void main(String[] args)
	{
		new SimpleParser().parse("a,b,c")
		        .fail(System.out::println)
		        .pipe((DonePipe<String[], String, String, String>) result -> new DeferredObject<String, String, String>().resolve(Arrays.toString(result)))
		        .then(System.out::println);
		
		new SimpleParser().parse("a, b,c")
		        .fail(System.out::println)
		        .done(Arrays::toString)
		        .then(System.out::println);
	}
	
}