org.hibernate.criterion
Class CountProjection

java.lang.Object
  org.hibernate.criterion.SimpleProjection
      org.hibernate.criterion.AggregateProjection
          org.hibernate.criterion.CountProjection

All Implemented Interfaces:

Serializable, Projection

public class CountProjection
extends AggregateProjection

A count

Author:

Gavin King

See Also:

Serialized Form

Field Summary

Fields inherited from class org.hibernate.criterion.AggregateProjection

propertyName

Constructor Summary

protected

CountProjection(String prop)

Method Summary

Type[]	getTypes(Criteria criteria, CriteriaQuery criteriaQuery) Types returned by the rendered SQL fragment.
CountProjection	setDistinct()
String	toSqlString(Criteria criteria, int position, CriteriaQuery criteriaQuery) Render the SQL fragment to be used in the SELECT clause.
String	toString()

Methods inherited from class org.hibernate.criterion.SimpleProjection

as, getAliases, getColumnAliases, getColumnAliases, getTypes, isGrouped, toGroupSqlString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

CountProjection

protected CountProjection(String prop)

Method Detail

toString

public String toString()

Overrides:

toString in class AggregateProjection

getTypes

public Type[] getTypes(Criteria criteria,
                       CriteriaQuery criteriaQuery)
                throws HibernateException

Description copied from interface: Projection

Types returned by the rendered SQL fragment. In other words what are the types that would represent the values this projection asked to be pulled into the result set?

Specified by:

getTypes in interface Projection

Overrides:

getTypes in class AggregateProjection

Parameters:

criteria - The local criteria to which this project is attached (for resolution).

criteriaQuery - The overall criteria query instance.

Returns:

The return types.

Throws:

HibernateException - Indicates a problem resolving the types

toSqlString

public String toSqlString(Criteria criteria,
                          int position,
                          CriteriaQuery criteriaQuery)
                   throws HibernateException

Description copied from interface: Projection

Render the SQL fragment to be used in the SELECT clause.

Specified by:

toSqlString in interface Projection

Overrides:

toSqlString in class AggregateProjection

Parameters:

criteria - The local criteria to which this project is attached (for resolution).

position - The number of columns rendered in the SELECT clause before this projection. Generally speaking this is useful to ensure uniqueness of the individual columns aliases.

criteriaQuery - The overall criteria query instance.

Returns:

The SQL fragment to plug into the SELECT

Throws:

HibernateException - Indicates a problem performing the rendering

setDistinct

public CountProjection setDistinct()