org.hibernate.criterion
Class RowCountProjection

java.lang.Object
  org.hibernate.criterion.SimpleProjection
      org.hibernate.criterion.RowCountProjection

All Implemented Interfaces:

Serializable, EnhancedProjection, Projection

public class RowCountProjection
extends SimpleProjection

A row count

Author:

Gavin King

See Also:

Serialized Form

Constructor Summary

RowCountProjection()

Method Summary

protected SQLFunction	getFunction(CriteriaQuery criteriaQuery)
Type[]	getTypes(Criteria criteria, CriteriaQuery criteriaQuery) Types returned by the rendered SQL fragment.
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, getColumnAliases, getColumnAliases, getColumnCount, getTypes, isGrouped, toGroupSqlString

Methods inherited from class java.lang.Object

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

Constructor Detail

RowCountProjection

public RowCountProjection()

Method Detail

toString

public String toString()

Overrides:

toString in class Object

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?

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.

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

getFunction

protected SQLFunction getFunction(CriteriaQuery criteriaQuery)