com.aol.cyclops.featuretoggle.FeatureToggleComprehender Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of cyclops-feature-toggle Show documentation

Enabled / Disabled monad (extends javaslang.control.Either)

There is a newer version: 7.2.4

Show newest version

package com.aol.cyclops.featuretoggle;
import java.util.function.Function;

import java.util.function.Predicate;

import com.aol.cyclops.lambda.api.Comprehender;

/**
 * @author johnmcclean
 *
 *  Behaviour in cross-type flatMap is to create an empty instance for Disabled Switches, but always pass Enabled values on
 */
public class FeatureToggleComprehender implements Comprehender{

	@Override
	public Object filter(FeatureToggle t, Predicate p) {
		return t.filter(p);
	}

	@Override
	public Object map(FeatureToggle t, Function fn) {
		return t.map(fn);
	}

	@Override
	public FeatureToggle flatMap(FeatureToggle t, Function fn) {
		return t.flatMap(fn);
	}

	@Override
	public boolean instanceOfT(Object apply) {
		return apply instanceof FeatureToggle;
	}
	
	

	@Override
	public FeatureToggle of(Object o) {
		return FeatureToggle.enable(o);
	}

	@Override
	public FeatureToggle empty() {
		return FeatureToggle.disable(null);
	}

	@Override
	public Class getTargetClass() {
		return FeatureToggle.class;
	}
	@Override
	public Object resolveForCrossTypeFlatMap(Comprehender comp,FeatureToggle apply){
		return apply.matches(
						c -> c.isType((Enabled e)-> comp.of(e.get())).anyValues(),
						c->	c.isType( (Disabled d) -> comp.empty()).anyValues()
					);
	}

}