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1 package org.hibernate.criterion;
3
4 import org.hibernate.Criteria;
5 import org.hibernate.HibernateException;
6 import org.hibernate.type.Type;
7
8
12 public class PropertyProjection extends SimpleProjection {
13
14 private String  propertyName;
15 private boolean grouped;
16
17 protected PropertyProjection(String prop, boolean grouped) {
18 this.propertyName = prop;
19 this.grouped = grouped;
20 }
21
22 protected PropertyProjection(String prop) {
23 this(prop, false);
24 }
25
26 public String getPropertyName() {
27 return propertyName;
28 }
29
30 public String toString() {
31 return propertyName;
32 }
33
34 public Type[] getTypes(Criteria criteria, CriteriaQuery criteriaQuery)
35 throws HibernateException {
36 return new Type[] { criteriaQuery.getType(criteria, propertyName) };
37 }
38
39 public String toSqlString(Criteria criteria, int position, CriteriaQuery criteriaQuery)
40 throws HibernateException {
41 return new StringBuffer ()
42 .append( criteriaQuery.getColumn(criteria, propertyName) )
43 .append(" as y")
44 .append(position)
45 .append('_')
46 .toString();
47 }
48
49 public boolean isGrouped() {
50 return grouped;
51 }
52
53 public String toGroupSqlString(Criteria criteria, CriteriaQuery criteriaQuery)
54 throws HibernateException {
55 if (!grouped) {
56 return super.toGroupSqlString(criteria, criteriaQuery);
57 }
58 else {
59 return criteriaQuery.getColumn(criteria, propertyName);
60 }
61 }
62
63 }
64 |
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