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annotate src/main/java/edu/harvard/iq/dataverse/DataverseLinkingServiceBean.java @ 14:be7787c36e58 default tip

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new: nofity LGSercies for deleted files
author Zoe Hong <zhong@mpiwg-berlin.mpg.de>
date Mon, 02 Nov 2015 16:41:23 +0100
parents a50cf11e5178
children
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1 /*
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2 * To change this license header, choose License Headers in Project Properties.
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3 * To change this template file, choose Tools | Templates
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4 * and open the template in the editor.
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5 */
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6 package edu.harvard.iq.dataverse;
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7
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8 import java.util.ArrayList;
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9 import java.util.List;
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10 import javax.ejb.EJB;
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11 import javax.ejb.Stateless;
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12 import javax.inject.Named;
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13 import javax.persistence.EntityManager;
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14 import javax.persistence.PersistenceContext;
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15 import javax.persistence.Query;
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16 import javax.persistence.TypedQuery;
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17
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18 /**
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19 *
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20 * @author skraffmiller
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21 */
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22 @Stateless
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23 @Named
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24 public class DataverseLinkingServiceBean implements java.io.Serializable {
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25
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26 @PersistenceContext(unitName = "VDCNet-ejbPU")
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27 private EntityManager em;
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28
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29 @EJB
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30 DataverseServiceBean dataverseService;
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31
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32
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33 public List<Dataverse> findLinkedDataverses(Long linkingDataverseId) {
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34 List<Dataverse> retList = new ArrayList();
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35 Query query = em.createQuery("select object(o) from DataverseLinkingDataverse as o where o.linkingDataverse.id =:linkingDataverseId order by o.id");
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36 query.setParameter("linkingDataverseId", linkingDataverseId);
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37 for (Object o : query.getResultList()) {
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38 DataverseLinkingDataverse convterted = (DataverseLinkingDataverse) o;
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39 retList.add(convterted.getDataverse());
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40 }
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41 return retList;
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42 }
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43
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44 public List<Dataverse> findLinkingDataverses(Long dataverseId) {
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45 List<Dataverse> retList = new ArrayList();
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46 Query query = em.createQuery("select object(o) from DataverseLinkingDataverse as o where o.dataverse.id =:dataverseId order by o.id");
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47 query.setParameter("dataverseId", dataverseId);
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48 for (Object o : query.getResultList()) {
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49 DataverseLinkingDataverse convterted = (DataverseLinkingDataverse) o;
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50 retList.add(convterted.getLinkingDataverse());
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51 }
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52 return retList;
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53 }
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54
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55 public void save(DataverseLinkingDataverse dataverseLinkingDataverse) {
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56 if (dataverseLinkingDataverse.getId() == null) {
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57 em.persist(dataverseLinkingDataverse);
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58 } else {
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59 em.merge(dataverseLinkingDataverse);
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60 }
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61 }
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62
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63 public boolean alreadyLinked(Dataverse definitionPoint, Dataverse dataverseToLinkTo) {
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64 TypedQuery<DataverseLinkingDataverse> typedQuery = em.createQuery("SELECT OBJECT(o) FROM DataverseLinkingDataverse AS o WHERE o.linkingDataverse.id = :dataverseId AND o.dataverse.id = :dataverseToLinkTo", DataverseLinkingDataverse.class);
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65 typedQuery.setParameter("dataverseId", definitionPoint.getId());
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66 typedQuery.setParameter("dataverseToLinkTo", dataverseToLinkTo.getId());
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67 return !typedQuery.getResultList().isEmpty();
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68 }
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69 }