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                  if (config.isDeleteElement()){
  90                  feature = node.getFeature();
  91                  termService.delete(feature.getUuid());
  92              }
  93              }
  94
  95
  96              return result;
  97          }
  98
  99          @Override
 100          public DeleteResult isDeletable(FeatureNode node, FeatureNodeDeletionConfigurator config){
 101              DeleteResult result = new DeleteResult();
 102              Set<CdmBase> references = commonService.getReferencingObjectsForDeletion(node);
 103              for (CdmBase ref:references){
 104                  if (ref instanceof FeatureNode){
 105                      break;
 106                  }
 107                  if (ref instanceof FeatureTree){
 108                      FeatureTree refTree = HibernateProxyHelper.deproxy(ref, FeatureTree.class);
 109                      if (node.getFeatureTree().equals((refTree))){
 110                          break;
 111                      }
 112                  }
 113                  result.setAbort();
 114                  result.addException(new ReferencedObjectUndeletableException("The featureNode is referenced by " + ref.getUserFriendlyDescription() +" with id " +ref.getId()));
 115
 116              }
 117              return result;
 118          }
 119
 120     /**
 121      * {@inheritDoc}
 122      */
 123     @Override
 124     public UpdateResult moveFeatureNode(UUID movedNodeUuid, UUID targetNodeUuid, int position) {
 125         UpdateResult result = new UpdateResult();
 126         FeatureNode movedNode = HibernateProxyHelper.deproxy(dao.load(movedNodeUuid), FeatureNode.class);
 127         FeatureNode targetNode = HibernateProxyHelper.deproxy(dao.load(targetNodeUuid), FeatureNode.class);
 128         if(position<0){
 129             targetNode.addChild(movedNode);
 130         }
 131         else{
 132             targetNode.addChild(movedNode, position);
 133         }
 134         result.addUpdatedObject(targetNode);
 135         if(movedNode.getParent()!=null){
 136             result.addUpdatedObject(movedNode.getParent());
 137         }
 138         result.setCdmEntity(targetNode.getFeatureTree());
 139         return result;
 140     }
 141
 142     /**
 143      * {@inheritDoc}
 144      */
 145     @Override
 146     public UpdateResult moveFeatureNode(UUID movedNodeUuid, UUID targetNodeUuid) {
 147         return moveFeatureNode(movedNodeUuid, targetNodeUuid, -1);
 148     }
 149
 150 }