cdmlib-services/src/main/java/eu/etaxonomy/cdm/api/service/VersionableServiceBase.java

   1 // $Id$
   2 /**
   3  * Copyright (C) 2007 EDIT
   4  * European Distributed Institute of Taxonomy
   5  * http://www.e-taxonomy.eu
   6  *
   7  * The contents of this file are subject to the Mozilla Public License Version 1.1
   8  * See LICENSE.TXT at the top of this package for the full license terms.
   9  */
  10 package eu.etaxonomy.cdm.api.service;
  11
  12 import java.util.ArrayList;
  13 import java.util.List;
  14
  15 import org.hibernate.envers.query.criteria.AuditCriterion;
  16 import org.springframework.transaction.annotation.Transactional;
  17
  18 import eu.etaxonomy.cdm.api.service.pager.Pager;
  19 import eu.etaxonomy.cdm.api.service.pager.impl.DefaultPagerImpl;
  20 import eu.etaxonomy.cdm.model.common.VersionableEntity;
  21 import eu.etaxonomy.cdm.model.view.AuditEvent;
  22 import eu.etaxonomy.cdm.model.view.AuditEventRecord;
  23 import eu.etaxonomy.cdm.persistence.dao.common.AuditEventSort;
  24 import eu.etaxonomy.cdm.persistence.dao.common.IVersionableDao;
  25
  26 public abstract class VersionableServiceBase<T extends VersionableEntity, DAO extends IVersionableDao<T>> extends ServiceBase<T,DAO> implements IVersionableService<T> {
  27
  28         @Transactional(readOnly = true)
  29         public Pager<AuditEventRecord<T>> pageAuditEvents(T t, Integer pageSize,        Integer pageNumber, AuditEventSort sort, List<String> propertyPaths) {
  30                 Integer numberOfResults = dao.countAuditEvents(t, sort);
  31
  32                 List<AuditEventRecord<T>> results = new ArrayList<AuditEventRecord<T>>();
  33                 if(numberOfResults > 0) { // no point checking again //TODO use AbstractPagerImpl.hasResultsInRange(numberOfResults, pageNumber, pageSize)
  34                         results = dao.getAuditEvents(t, pageSize, pageNumber, sort,propertyPaths);
  35                 }
  36
  37                 return new DefaultPagerImpl<AuditEventRecord<T>>(pageNumber, numberOfResults, pageSize, results);
  38         }
  39
  40         @Transactional(readOnly = true)
  41         public AuditEventRecord<T> getNextAuditEvent(T t) {
  42                 return dao.getNextAuditEvent(t);
  43         }
  44
  45         @Transactional(readOnly = true)
  46         public AuditEventRecord<T> getPreviousAuditEvent(T t) {
  47                 return dao.getPreviousAuditEvent(t);
  48         }
  49
  50         @Transactional(readOnly = true)
  51         public Pager<AuditEventRecord<T>> pageAuditEvents(Class<? extends T> clazz,AuditEvent from,AuditEvent to, List<AuditCriterion> criteria, Integer pageSize, Integer pageNumber, AuditEventSort sort,List<String> propertyPaths) {
  52                 Integer numberOfResults = dao.countAuditEvents(clazz, from, to, criteria);
  53
  54                 List<AuditEventRecord<T>> results = new ArrayList<AuditEventRecord<T>>();
  55                 if(numberOfResults > 0) { // no point checking again //TODO use AbstractPagerImpl.hasResultsInRange(numberOfResults, pageNumber, pageSize)
  56                         results = dao.getAuditEvents(clazz,from,to,criteria, pageSize, pageNumber, sort,propertyPaths);
  57                 }
  58
  59                 return new DefaultPagerImpl<AuditEventRecord<T>>(pageNumber, numberOfResults, pageSize, results);
  60         }
  61 }