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