RowCountProjection


1   //$Id: RowCountProjection.java,v 1.8 2005/02/12 07:19:14 steveebersole Exp $
2   package org.hibernate.criterion;
3   
4   import org.hibernate.Criteria;
5   import org.hibernate.Hibernate;
6   import org.hibernate.HibernateException;
7   import org.hibernate.type.Type;
8   
9   /**
10   * A row count
11   * @author Gavin King
12   */
13  public class RowCountProjection extends SimpleProjection {
14  
15      protected RowCountProjection() {}
16  
17      public String   toString() {
18          return "count(*)";
19      }
20  
21      public Type[] getTypes(Criteria criteria, CriteriaQuery criteriaQuery) 
22      throws HibernateException {
23          return new Type[] { Hibernate.INTEGER };
24      }
25  
26      public String   toSqlString(Criteria criteria, int position, CriteriaQuery criteriaQuery) 
27      throws HibernateException {
28          return new StringBuffer  ()
29              .append("count(*) as y")
30              .append(position)
31              .append('_')
32              .toString();
33      }
34  
35  }
36

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