AbstractUserComparator.java

package fr.openwide.core.jpa.security.business.person.util;

import fr.openwide.core.jpa.business.generic.util.AbstractGenericEntityComparator;
import fr.openwide.core.jpa.security.business.person.model.GenericUser;

public class AbstractUserComparator extends AbstractGenericEntityComparator<Long, GenericUser<?, ?>> {

	private static final long serialVersionUID = 5465095061690808293L;
	
	private static final AbstractUserComparator INSTANCE = new AbstractUserComparator();
	
	public static AbstractUserComparator get() {
		return INSTANCE;
	}

	@Override
	protected int compareNotNullObjects(GenericUser<?, ?> left, GenericUser<?, ?> right) {
		@SuppressWarnings({ "unchecked", "rawtypes" }) // Hack allowing applications to override user order. Will work as expected as long as there is only one user type.
		int order = ((GenericUser)left).compareTo((GenericUser)right);
		if (order == 0) {
			order = super.compareNotNullObjects(left, right);
		}
		return order;
	}
	
}