monniasza.collects.ListModelCollector Maven / Gradle / Ivy

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/**
 * 
 */
package monniasza.collects;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Set;
import java.util.function.BiConsumer;
import java.util.function.BinaryOperator;
import java.util.function.Function;
import java.util.function.Supplier;
import java.util.stream.Collector;

import javax.swing.DefaultListModel;

import mmb.NN;

/**
 * Collects a stream to a list
 * @author oskar
 * @param  type of values
 */
public class ListModelCollector implements Collector, DefaultListModel> {
	/** @return a list model collector */
	@SuppressWarnings("unchecked")
	/**
	 * @param  type of values
	 * @return a stream collector for list models
	 */
	@NN public static  ListModelCollector create(){return (ListModelCollector) collector;}
	@NN private static final ListModelCollector collector = new ListModelCollector<>();
	private ListModelCollector(){}
	
	@Override
	public Supplier> supplier() {
		return ArrayList::new;
	}

	@Override
	public BiConsumer, T> accumulator() {
		return List::add;
	}

	@SuppressWarnings("null")
	@Override
	public BinaryOperator> combiner() {
		return Collects::inplaceAddLists;
	}

	@SuppressWarnings("null")
	@Override
	public Function, DefaultListModel> finisher() {
		return Collects::newListModel;
	}

	@Override
	public Set characteristics() {
		return Collections.emptySet();
	}
}