org.hibernate.criterion

Class SimpleProjection

Implemented Interfaces:
Projection, Serializable
Known Direct Subclasses:
AggregateProjection, IdentifierProjection, PropertyProjection, RowCountProjection

public abstract class SimpleProjection
extends java.lang.Object
implements Projection

A single-column projection that may be aliased
Author:
Gavin King

Method Summary

Projection
as(String alias)
String[]
getAliases()
Get the user-visible aliases for this projection (ie.
String[]
getColumnAliases(String alias, int loc)
Get the SQL select clause column aliases for a particular user-visible alias
String[]
getColumnAliases(int loc)
Get the SQL select clause column aliases
Type[]
getTypes(String alias, Criteria criteria, CriteriaQuery criteriaQuery)
Return types for a particular user-visible alias
boolean
isGrouped()
Does this projection specify grouping attributes?
String
toGroupSqlString(Criteria criteria, CriteriaQuery criteriaQuery)
Render the SQL fragment to be used in the group by clause

Method Details

as

public Projection as(String alias)

getAliases

public String[] getAliases()
Get the user-visible aliases for this projection (ie. the ones that will be passed to the ResultTransformer)
Specified by:
getAliases in interface Projection

getColumnAliases

public String[] getColumnAliases(String alias,
                                 int loc)
Get the SQL select clause column aliases for a particular user-visible alias
Specified by:
getColumnAliases in interface Projection

getColumnAliases

public String[] getColumnAliases(int loc)
Get the SQL select clause column aliases
Specified by:
getColumnAliases in interface Projection

getTypes

public Type[] getTypes(String alias,
                       Criteria criteria,
                       CriteriaQuery criteriaQuery)
            throws HibernateException
Return types for a particular user-visible alias
Specified by:
getTypes in interface Projection

isGrouped

public boolean isGrouped()
Does this projection specify grouping attributes?
Specified by:
isGrouped in interface Projection

toGroupSqlString

public String toGroupSqlString(Criteria criteria,
                               CriteriaQuery criteriaQuery)
            throws HibernateException
Render the SQL fragment to be used in the group by clause
Specified by:
toGroupSqlString in interface Projection
Parameters:
criteriaQuery -
Returns:
String