AggregateProjection (Hibernate API Documentation) - Hibernate 3.2.4 正式版 API 英文文档

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org.hibernate.criterion
Class AggregateProjection

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

All Implemented Interfaces:: Projection, Serializable

Direct Known Subclasses:: AvgProjection, CountProjection

public class AggregateProjection
extends SimpleProjection

An aggregation

Author:: max
See Also:: Serialized Form

Field Summary

protected String propertyName


Constructor Summary

protected AggregateProjection(String aggregate, String propertyName)


Method Summary

Type[] getTypes(Criteria criteria, CriteriaQuery criteriaQuery)
          Return types returned by the rendered SQL fragment

String toSqlString(Criteria criteria, int loc, CriteriaQuery criteriaQuery)
          Render the SQL fragment

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

Field Detail

propertyName

protected final String propertyName

Constructor Detail

AggregateProjection

protected AggregateProjection(String aggregate,
                              String propertyName)

Method Detail

toString

public String toString()

getTypes

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

Description copied from interface: Projection

Return types returned by the rendered SQL fragment

Parameters:: criteria -; criteriaQuery -
Returns:: Type[]
Throws:: HibernateException

toSqlString

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