EventUserPlacegroupPredicate.java

package fi.codecrew.moya.facade.callbacks;

import java.util.List;

import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Path;
import javax.persistence.criteria.Predicate;

import fi.codecrew.moya.model.EventUser;
import fi.codecrew.moya.model.EventUser_;
import fi.codecrew.moya.utilities.jpa.FacadeCallback;

public class EventUserPlacegroupPredicate implements FacadeCallback<EventUser> {

	@Override
	public void exec(CriteriaBuilder cb, CriteriaQuery<?> cq, Path<EventUser> root, List<Predicate> predicates) {
		predicates.add(cb.isNotEmpty(root.get(EventUser_.groupMemberships)));
	}

}