cdmlib-services/src/main/java/eu/etaxonomy/cdm/api/service/ServiceBase.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
  11 package eu.etaxonomy.cdm.api.service;
  12
  13 import java.util.ArrayList;
  14 import java.util.Collection;
  15 import java.util.List;
  16 import java.util.Map;
  17 import java.util.Set;
  18 import java.util.UUID;
  19
  20 import org.apache.log4j.Logger;
  21 import org.hibernate.LockMode;
  22 import org.hibernate.Session;
  23 import org.springframework.context.ApplicationContext;
  24 import org.springframework.context.ApplicationContextAware;
  25 import org.springframework.security.access.prepost.PreAuthorize;
  26 import org.springframework.security.core.Authentication;
  27 import org.springframework.transaction.annotation.Transactional;
  28
  29 import eu.etaxonomy.cdm.api.service.pager.Pager;
  30 import eu.etaxonomy.cdm.api.service.pager.impl.DefaultPagerImpl;
  31 import eu.etaxonomy.cdm.model.common.CdmBase;
  32 import eu.etaxonomy.cdm.permission.CdmPermission;
  33 import eu.etaxonomy.cdm.permission.CdmPermissionEvaluator;
  34 import eu.etaxonomy.cdm.persistence.dao.common.ICdmEntityDao;
  35 import eu.etaxonomy.cdm.persistence.query.Grouping;
  36 import eu.etaxonomy.cdm.persistence.query.OrderHint;
  37
  38 public abstract class ServiceBase<T extends CdmBase, DAO extends ICdmEntityDao<T>> implements IService<T>, ApplicationContextAware {
  39         @SuppressWarnings("unused")
  40         private static final Logger logger = Logger.getLogger(ServiceBase.class);
  41
  42         //flush after saving this number of objects
  43         int flushAfterNo = 2000;
  44         protected ApplicationContext appContext;
  45
  46         protected DAO dao;
  47
  48         @Transactional(readOnly = true)
  49         public void lock(T t, LockMode lockMode) {
  50                 dao.lock(t, lockMode);
  51         }
  52
  53         @Transactional(readOnly = true)
  54         public void refresh(T t, LockMode lockMode, List<String> propertyPaths) {
  55                 dao.refresh(t, lockMode, propertyPaths);
  56         }
  57
  58         @Transactional(readOnly = false)
  59         public void clear() {
  60                 dao.clear();
  61         }
  62
  63         @Transactional(readOnly = true)
  64         public int count(Class<? extends T> clazz) {
  65                 return dao.count(clazz);
  66         }
  67
  68         @Transactional(readOnly = false)
  69         public UUID delete(T persistentObject) {
  70                 return dao.delete(persistentObject);
  71         }
  72
  73         @Transactional(readOnly = true)
  74         public boolean exists(UUID uuid) {
  75                 return dao.exists(uuid);
  76         }
  77
  78         @Transactional(readOnly = true)
  79         public List<T> find(Set<UUID> uuidSet) {
  80                 return dao.findByUuid(uuidSet);
  81         }
  82
  83         @Transactional(readOnly = true)
  84         public T find(UUID uuid) {
  85                 return dao.findByUuid(uuid);
  86         }
  87
  88         @Transactional(readOnly = true)
  89         public Session getSession() {
  90                 return dao.getSession();
  91         }
  92
  93         @Transactional(readOnly = true)
  94         public List<Object[]> group(Class<? extends T> clazz,Integer limit, Integer start, List<Grouping> groups, List<String> propertyPaths) {
  95                 return dao.group(clazz, limit, start, groups, propertyPaths);
  96         }
  97
  98         @Transactional(readOnly = true)
  99         public  List<T> list(Class<? extends T> type, Integer limit, Integer start, List<OrderHint> orderHints, List<String> propertyPaths){
 100                 return dao.list(type,limit, start, orderHints,propertyPaths);
 101         }
 102
 103         @Transactional(readOnly = true)
 104         public T load(UUID uuid) {
 105                 return dao.load(uuid);
 106         }
 107
 108         @Transactional(readOnly = true)
 109         public T load(UUID uuid, List<String> propertyPaths){
 110                 return dao.load(uuid, propertyPaths);
 111         }
 112
 113         @Transactional(readOnly = false)
 114         public T merge(T newInstance) {
 115                 return dao.merge(newInstance);
 116         }
 117
 118         @Transactional(readOnly = true)
 119         public  Pager<T> page(Class<? extends T> type, Integer pageSize, Integer pageNumber, List<OrderHint> orderHints, List<String> propertyPaths){
 120                 Integer numberOfResults = dao.count(type);
 121                 List<T> results = new ArrayList<T>();
 122                 pageNumber = pageNumber == null ? 0 : pageNumber;
 123                 if(numberOfResults > 0) { // no point checking again  //TODO use AbstractPagerImpl.hasResultsInRange(numberOfResults, pageNumber, pageSize)
 124                         Integer start = pageSize == null ? 0 : pageSize * pageNumber;
 125                         results = dao.list(type, pageSize, start, orderHints,propertyPaths);
 126                 }
 127                 return new DefaultPagerImpl<T>(pageNumber, numberOfResults, pageSize, results);
 128         }
 129
 130         @Transactional(readOnly = true)
 131     public UUID refresh(T persistentObject) {
 132                 return dao.refresh(persistentObject);
 133         }
 134
 135         /**
 136          * FIXME Candidate for harmonization
 137          * is this method used, and if so, should it be exposed in the service layer?
 138          * it seems a bit incongruous that we use an ORM to hide the fact that there is a
 139          * database, then expose a method that talks about "rows" . . .
 140          */
 141         @Transactional(readOnly = true)
 142         public List<T> rows(String tableName, int limit, int start) {
 143                 return dao.rows(tableName, limit, start);
 144         }
 145
 146         @Transactional(readOnly = false)
 147         public Map<UUID, T> save(Collection<T> newInstances) {
 148                 return dao.saveAll(newInstances);
 149         }
 150
 151         @Transactional(readOnly = false)
 152         public UUID save(T newInstance) {
 153                 return dao.save(newInstance);
 154         }
 155
 156         @Transactional(readOnly = false)
 157         public UUID saveOrUpdate(T transientObject) {
 158                 return dao.saveOrUpdate(transientObject);
 159         }
 160
 161         @Transactional(readOnly = false)
 162         public Map<UUID, T> saveOrUpdate(Collection<T> transientInstances) {
 163                 return dao.saveOrUpdateAll(transientInstances);
 164         }
 165
 166         /* (non-Javadoc)
 167          * @see eu.etaxonomy.cdm.api.service.Iyyy#setApplicationContext(org.springframework.context.ApplicationContext)
 168          */
 169         public void setApplicationContext(ApplicationContext appContext){
 170                 this.appContext = appContext;
 171         }
 172
 173
 174         protected abstract void setDao(DAO dao);
 175
 176         @Transactional(readOnly = false)
 177         public UUID update(T transientObject) {
 178                 return dao.update(transientObject);
 179         }
 180
 181         @Transactional(readOnly = true)
 182         public List<T> list(T example, Set<String> includeProperties, Integer limit, Integer start, List<OrderHint> orderHints, List<String> propertyPaths) {
 183                 return dao.list(example, includeProperties, limit, start, orderHints, propertyPaths);
 184         }
 185
 186         @Transactional(readOnly = true)
 187         public boolean hasPermission(Authentication authentication, T target, CdmPermission permission) {
 188                 CdmPermissionEvaluator permissionEvaluator = new CdmPermissionEvaluator();
 189                 return permissionEvaluator.hasPermission(authentication, target, permission);
 190
 191         }
 192 }