cdmlib-model/src/main/java/eu/etaxonomy/cdm/ref/TypedEntityReference.java

   1 /**
   2 * Copyright (C) 2017 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 package eu.etaxonomy.cdm.ref;
  10
  11 import java.util.UUID;
  12
  13 import org.apache.commons.lang3.builder.HashCodeBuilder;
  14
  15 import eu.etaxonomy.cdm.model.common.CdmBase;
  16 import eu.etaxonomy.cdm.model.common.IdentifiableEntity;
  17
  18 /**
  19  * @author a.kohlbecker
  20  * @since Jun 12, 2017
  21  *
  22  */
  23 public class TypedEntityReference<T extends CdmBase> extends EntityReference {
  24
  25     private static final long serialVersionUID = -4619590272174606288L;
  26
  27     private Class<T> type;
  28
  29     /**
  30      * @param uuid
  31      * @param label
  32      */
  33     public TypedEntityReference(Class<T> type, UUID uuid, String label) {
  34         super(uuid, label);
  35         this.type = type;
  36     }
  37
  38     public TypedEntityReference(Class<T> type, UUID uuid) {
  39         super(uuid, null);
  40         this.type = type;
  41     }
  42
  43     public static  <T extends CdmBase> TypedEntityReference<T> fromEntity(T entity) {
  44         if(entity == null) {
  45             return null;
  46         }
  47         if(IdentifiableEntity.class.isAssignableFrom(entity.getClass())) {
  48             return new TypedEntityReference<T>((Class<T>)entity.getClass(), entity.getUuid(), ((IdentifiableEntity)entity).getTitleCache());
  49         } else {
  50             return new TypedEntityReference<T>((Class<T>)entity.getClass(), entity.getUuid());
  51         }
  52     }
  53
  54     public Class<T> getType() {
  55         return type;
  56     }
  57     public void setType(Class<T> type) {
  58         this.type = type;
  59     }
  60
  61     /**
  62      * {@inheritDoc}
  63      */
  64     @Override
  65     public int hashCode() {
  66         return new HashCodeBuilder(17, 31)
  67                 .append(uuid)
  68                 .appendSuper(type.hashCode())
  69                 .hashCode();
  70     }
  71
  72     /**
  73      * {@inheritDoc}
  74      */
  75     @SuppressWarnings("rawtypes")
  76     @Override
  77     public boolean equals(Object obj) {
  78         try {
  79             TypedEntityReference other = (TypedEntityReference) obj;
  80             return uuid.equals(other.uuid) && type.equals(other.type);
  81
  82         } catch (Exception e) {
  83             return false;
  84         }
  85     }
  86
  87     @Override
  88     public String toString(){
  89         return type.getSimpleName() + "#" + uuid;
  90
  91     }
  92
  93 }