Mercurial > lada > lada-server
view src/main/java/de/intevation/lada/data/LProbeRepository.java @ 39:e0a5477f657e
Documentation.
author | Raimund Renkert <rrenkert@intevation.de> |
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date | Thu, 23 May 2013 15:29:13 +0200 |
parents | 8155d2ed5cb8 |
children | 0dd63fcc9581 |
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package de.intevation.lada.data; import java.util.Date; import java.util.List; import javax.enterprise.context.ApplicationScoped; import javax.inject.Inject; import javax.persistence.EntityManager; import javax.persistence.PersistenceContext; import javax.persistence.PersistenceContextType; import javax.persistence.criteria.CriteriaBuilder; import javax.persistence.criteria.CriteriaQuery; import javax.persistence.criteria.Predicate; import javax.persistence.criteria.Root; import de.intevation.lada.model.LProbe; import de.intevation.lada.service.LProbeService; /** * This Container is an interface to request, filter and select LProbe * obejcts from the connected database. * * @author <a href="mailto:rrenkert@intevation.de">Raimund Renkert</a> */ @ApplicationScoped public class LProbeRepository { /** * The entitymanager managing the data. */ @Inject @PersistenceContext(type=PersistenceContextType.EXTENDED) private EntityManager em; /** * Service class for LPRobe. Used to manipulate data objects. */ @Inject private LProbeService service; /** * Find a single LProbe object identified by its id. * * @param id The mst_id * @return The SMessStelle object. */ public LProbe findById(String id) { return em.find(LProbe.class, id); } /** * Filter for LProbe objects. * * @param mstId mst_id * @param uwbId umw_id * @param begin probeentnahmebegin * @return */ public List<LProbe> filter(String mstId, String uwbId, Long begin) { CriteriaBuilder cb = em.getCriteriaBuilder(); CriteriaQuery<LProbe> criteria = cb.createQuery(LProbe.class); Root<LProbe> member = criteria.from(LProbe.class); Predicate mst = cb.equal(member.get("mstId"), mstId); Predicate uwb = cb.equal(member.get("umwId"), uwbId); if (!mstId.isEmpty() && !uwbId.isEmpty() && begin != null) { Predicate beg = cb.equal(member.get("probeentnahmeBeginn"), new Date(begin)); criteria.where(cb.and(mst, uwb, beg)); } else if (!mstId.isEmpty() && !uwbId.isEmpty() && begin == null) { criteria.where(cb.and(mst, uwb)); } else if (!mstId.isEmpty() && uwbId.isEmpty() && begin != null) { Predicate beg = cb.equal(member.get("probeentnahmeBeginn"), new Date(begin)); criteria.where(cb.and(mst, beg)); } else if (mstId.isEmpty() && !uwbId.isEmpty() && begin != null) { Predicate beg = cb.equal(member.get("probeentnahmeBeginn"), new Date(begin)); criteria.where(cb.and(uwb, beg)); } else if (!mstId.isEmpty() && uwbId.isEmpty() && begin == null) { criteria.where(mst); } else if (mstId.isEmpty() && !uwbId.isEmpty() && begin == null) { criteria.where(uwb); } else if (mstId.isEmpty() && uwbId.isEmpty() && begin != null) { Predicate beg = cb.equal(member.get("probeentnahmeBeginn"), new Date(begin)); criteria.where(beg); } return em.createQuery(criteria).getResultList(); } /** * Get all LProbe objects from database. * * @return List of LProbe objects. */ public List<LProbe> findAll() { CriteriaBuilder cb = em.getCriteriaBuilder(); CriteriaQuery<LProbe> criteria = cb.createQuery(LProbe.class); Root<LProbe> member = criteria.from(LProbe.class); criteria.select(member); return em.createQuery(criteria).getResultList(); } }