cdmlib-persistence/src/main/java/eu/etaxonomy/cdm/persistence/query/Grouping.java

   1 /**
   2 * Copyright (C) 2009 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.persistence.query;
  11
  12
  13 import org.hibernate.Criteria;
  14 import org.hibernate.criterion.Order;
  15 import org.hibernate.criterion.Projection;
  16 import org.hibernate.criterion.ProjectionList;
  17 import org.hibernate.criterion.Property;
  18
  19 import eu.etaxonomy.cdm.persistence.query.OrderHint.SortOrder;
  20
  21 public class Grouping {
  22         private String associatedObject;
  23         private String associatedObjectAlias;
  24         private String propertyName;
  25         protected String name;
  26         private SortOrder order;
  27
  28         public Grouping(String propertyPath, String name,  String associatedObjectAlias, SortOrder order) {
  29         int pos;
  30         if((pos = propertyPath.indexOf('.', 0)) >= 0){
  31             this.associatedObject = propertyPath.substring(0, pos);
  32             this.propertyName = propertyPath.substring(pos + 1);
  33         } else {
  34             this.propertyName = propertyPath;
  35         }
  36         this.name = name;
  37         this.order = order;
  38         this.associatedObjectAlias = associatedObjectAlias;
  39         }
  40
  41         protected void setPropertyName(String propertyName) {
  42                 this.propertyName = propertyName;
  43         }
  44
  45         public String getPropertyName() {
  46                 return propertyName;
  47         }
  48
  49         public String getAssociatedObj() {
  50                 return associatedObject;
  51         }
  52
  53         public String getAssociatedObjectAlias() {
  54                 return associatedObjectAlias;
  55         }
  56
  57         public String getName() {
  58                 return name;
  59         }
  60
  61         protected SortOrder getOrder() {
  62                 return order;
  63         }
  64
  65         public void addOrder(Criteria criteria) {
  66                 if(order != null) {
  67                         if(order.equals(SortOrder.ASCENDING)) {
  68                                 criteria.addOrder(Order.asc(this.name));
  69                         } else {
  70                                 criteria.addOrder(Order.desc(this.name));
  71                         }
  72                 }
  73         }
  74
  75         public void addProjection(ProjectionList projectionList) {
  76                 if(associatedObjectAlias != null) {
  77                     projectionList.add(Property.forName(associatedObjectAlias + "." + propertyName).group(),name);
  78                 } else {
  79                         projectionList.add(Property.forName(propertyName).group(),name);
  80                 }
  81         }
  82
  83 }