net.sf.qualitycheck.immutableobject.domain.Interface Maven / Gradle / Ivy

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package net.sf.qualitycheck.immutableobject.domain;

import javax.annotation.Nonnull;
import javax.annotation.concurrent.Immutable;

import net.sf.qualitycheck.Check;

@Immutable
public final class Interface {

	public static final Interface UNDEFINED = new Interface();

	public static Interface of(@Nonnull final Class interfaceType) {
		Check.notNull(interfaceType, "interfaceType");
		Check.stateIsTrue(interfaceType.isInterface(), "requires an interface");
		return new Interface(Type.of(interfaceType));
	}

	public static Interface of(@Nonnull final String interfaceType) {
		Check.notEmpty(interfaceType, "interfaceType");
		return new Interface(new Type(interfaceType));
	}

	@Nonnull
	final Type _type;

	public Interface() {
		_type = new Type("void");
	}

	public Interface(final Type interfaceType) {
		_type = Check.notNull(interfaceType, "interfaceType");
	}

	@Override
	public boolean equals(final Object obj) {
		if (this == obj) {
			return true;
		}
		if (obj == null) {
			return false;
		}
		if (getClass() != obj.getClass()) {
			return false;
		}
		final Interface other = (Interface) obj;
		if (!_type.equals(other._type)) {
			return false;
		}
		return true;
	}

	public Type getType() {
		return _type;
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + _type.hashCode();
		return result;
	}

	@Override
	public String toString() {
		return _type.getName();
	}

}