MapQueueRulesFacade.java
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/*
* Copyright Codecrew Ry
*
* All rights reserved.
*
* This license applies to any software containing a notice placed by the
* copyright holder. Such software is herein referred to as the Software.
* This license covers modification, distribution and use of the Software.
*
* Any distribution and use in source and binary forms, with or without
* modification is not permitted without explicit written permission from the
* copyright owner.
*
* A non-exclusive royalty-free right is granted to the copyright owner of the
* Software to use, modify and distribute all modifications to the Software in
* future versions of the Software.
*
*/
package fi.codecrew.moya.facade;
import fi.codecrew.moya.model.EventMap;
import fi.codecrew.moya.model.MapQueueRules;
import fi.codecrew.moya.model.MapQueueRules_;
import javax.ejb.LocalBean;
import javax.ejb.Stateless;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Root;
@Stateless
@LocalBean
public class MapQueueRulesFacade extends IntegerPkGenericFacade<MapQueueRules> {
public MapQueueRulesFacade() {
super(MapQueueRules.class);
}
public MapQueueRules findByMap(EventMap map) {
if(map == null) {
throw new NullPointerException("Map must be given to MapQueueRules.findByMap");
}
CriteriaBuilder cb = getEm().getCriteriaBuilder();
CriteriaQuery<MapQueueRules> cq = cb.createQuery(MapQueueRules.class);
Root<MapQueueRules> root = cq.from(MapQueueRules.class);
cq.where(cb.equal(root.get(MapQueueRules_.map), map));
return getSingleNullableResult(getEm().createQuery(cq).setMaxResults(1));
}
}