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

   1 /**
   2 * Copyright (C) 2007 EDIT
   3 * European Distributed Institute of Taxonomy
   4 * http://www.e-taxonomy.eu
   5 *
   6 * The contents of this file are subject to the Mozilla Public License Version 1.1
   7 * See LICENSE.TXT at the top of this package for the full license terms.
   8 */
   9
  10 package eu.etaxonomy.cdm.api.service;
  11
  12 import java.util.ArrayList;
  13 import java.util.List;
  14 import java.util.Set;
  15 import java.util.UUID;
  16
  17 import org.apache.log4j.Logger;
  18 import org.springframework.beans.factory.annotation.Autowired;
  19 import org.springframework.stereotype.Service;
  20 import org.springframework.transaction.annotation.Transactional;
  21
  22 import eu.etaxonomy.cdm.api.service.config.FeatureNodeDeletionConfigurator;
  23 import eu.etaxonomy.cdm.api.service.config.NodeDeletionConfigurator.ChildHandling;
  24 import eu.etaxonomy.cdm.api.service.exception.ReferencedObjectUndeletableException;
  25 import eu.etaxonomy.cdm.hibernate.HibernateProxyHelper;
  26 import eu.etaxonomy.cdm.model.common.CdmBase;
  27 import eu.etaxonomy.cdm.model.description.Feature;
  28 import eu.etaxonomy.cdm.model.description.FeatureNode;
  29 import eu.etaxonomy.cdm.model.description.FeatureTree;
  30 import eu.etaxonomy.cdm.persistence.dao.description.IFeatureNodeDao;
  31
  32 /**
  33  * @author n.hoffmann
  34  * @created Aug 5, 2010
  35  * @version 1.0
  36  */
  37 @Service
  38 @Transactional(readOnly = false)
  39 public class FeatureNodeServiceImpl extends VersionableServiceBase<FeatureNode, IFeatureNodeDao> implements IFeatureNodeService {
  40         private static final Logger logger = Logger.getLogger(FeatureNodeServiceImpl.class);
  41
  42         @Override
  43     @Autowired
  44         protected void setDao(IFeatureNodeDao dao) {
  45                 this.dao = dao;
  46         }
  47
  48         @Autowired
  49     private ITermService termService;
  50
  51          @Override
  52          @Transactional(readOnly = false)
  53          public DeleteResult deleteFeatureNode(UUID nodeUuid, FeatureNodeDeletionConfigurator config) {
  54              DeleteResult result = new DeleteResult();
  55              FeatureNode node = HibernateProxyHelper.deproxy(dao.load(nodeUuid), FeatureNode.class);
  56              result = isDeletable(node, config);
  57              Feature feature;
  58              if (result.isOk()){
  59                  FeatureNode parent = node.getParent();
  60              parent = HibernateProxyHelper.deproxy(parent, FeatureNode.class);
  61                  List<FeatureNode> children = new ArrayList(node.getChildNodes());
  62
  63                  if (config.getChildHandling().equals(ChildHandling.DELETE)){
  64
  65                      for (FeatureNode child: children){
  66                          deleteFeatureNode(child.getUuid(), config);
  67                         // node.removeChild(child);
  68                      }
  69                      if (parent != null){
  70                          parent.removeChild(node);
  71                      }
  72
  73                  } else{
  74
  75                      if (parent != null){
  76                          parent.removeChild(node);
  77                          for (FeatureNode child: children){
  78                              node.removeChild(child);
  79                              parent.addChild(child);
  80                          }
  81                      }else{
  82                          result.setAbort();
  83                          result.addException(new ReferencedObjectUndeletableException("The root node can not be deleted without its child nodes"));
  84                          return result;
  85                      }
  86                  }
  87
  88                  dao.delete(node);
  89                  result.addDeletedObject(node);
  90                  if(parent!=null){
  91                      result.addUpdatedObject(parent);
  92                  }
  93                  if (config.isDeleteElement()){
  94                  feature = node.getFeature();
  95                  termService.delete(feature.getUuid());
  96                  result.addDeletedObject(feature);
  97              }
  98              }
  99              return result;
 100          }
 101
 102          @Override
 103          public UpdateResult addChildFeatureNode(FeatureNode node, Feature featureChild){
 104              UpdateResult result = new UpdateResult();
 105              FeatureNode childNode = FeatureNode.NewInstance(featureChild);
 106              save(childNode);
 107              node.addChild(childNode);
 108              result.addUpdatedObject(node);
 109              return result;
 110          }
 111
 112          @Override
 113          public UpdateResult addChildFeatureNode(UUID nodeUUID, UUID featureChildUuid){
 114              FeatureNode node = load(nodeUUID);
 115              Feature child = HibernateProxyHelper.deproxy(termService.load(featureChildUuid), Feature.class);
 116              return addChildFeatureNode(node, child);
 117          }
 118
 119          @Override
 120          public DeleteResult isDeletable(FeatureNode node, FeatureNodeDeletionConfigurator config){
 121              DeleteResult result = new DeleteResult();
 122              Set<CdmBase> references = commonService.getReferencingObjectsForDeletion(node);
 123              for (CdmBase ref:references){
 124                  if (ref instanceof FeatureNode){
 125                      break;
 126                  }
 127                  if (ref instanceof FeatureTree){
 128                      FeatureTree refTree = HibernateProxyHelper.deproxy(ref, FeatureTree.class);
 129                      if (node.getFeatureTree().equals((refTree))){
 130                          break;
 131                      }
 132                  }
 133                  result.setAbort();
 134                  result.addException(new ReferencedObjectUndeletableException("The featureNode is referenced by " + ref.getUserFriendlyDescription() +" with id " +ref.getId()));
 135
 136              }
 137              return result;
 138          }
 139
 140     /**
 141      * {@inheritDoc}
 142      */
 143     @Override
 144     public UpdateResult moveFeatureNode(UUID movedNodeUuid, UUID targetNodeUuid, int position) {
 145         UpdateResult result = new UpdateResult();
 146         FeatureNode movedNode = HibernateProxyHelper.deproxy(load(movedNodeUuid), FeatureNode.class);
 147         FeatureNode targetNode = HibernateProxyHelper.deproxy(load(targetNodeUuid), FeatureNode.class);
 148         FeatureNode parent = HibernateProxyHelper.deproxy(movedNode.getParent(), FeatureNode.class);
 149         if(position<0){
 150             targetNode.addChild(movedNode);
 151         }
 152         else{
 153             targetNode.addChild(movedNode, position);
 154         }
 155         result.addUpdatedObject(targetNode);
 156         saveOrUpdate(targetNode);
 157         saveOrUpdate(movedNode);
 158         if(parent!=null){
 159             result.addUpdatedObject(parent);
 160             saveOrUpdate(parent);
 161         }
 162         result.setCdmEntity(targetNode.getFeatureTree());
 163         return result;
 164     }
 165
 166     /**
 167      * {@inheritDoc}
 168      */
 169     @Override
 170     public UpdateResult moveFeatureNode(UUID movedNodeUuid, UUID targetNodeUuid) {
 171         return moveFeatureNode(movedNodeUuid, targetNodeUuid, -1);
 172     }
 173
 174 }