org.hibernate.criterion
Class PropertyProjection

java.lang.Object
  extended by org.hibernate.criterion.SimpleProjection
      extended by org.hibernate.criterion.PropertyProjection
All Implemented Interfaces:
Serializable, EnhancedProjection, Projection
Direct Known Subclasses:
Property

public class PropertyProjection
extends SimpleProjection

A property value, or grouped property value

See Also:
Serialized Form

Constructor Summary
protected PropertyProjection(String prop)
           
protected PropertyProjection(String prop, boolean grouped)
           
 
Method Summary
 String getPropertyName()
           
 Type[] getTypes(Criteria criteria, CriteriaQuery criteriaQuery)
          Types returned by the rendered SQL fragment.
 boolean isGrouped()
          Is this projection fragment (SELECT clause) also part of the GROUP BY
 String toGroupSqlString(Criteria criteria, CriteriaQuery criteriaQuery)
          Render the SQL fragment to be used in the GROUP BY clause
 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
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

PropertyProjection

protected PropertyProjection(String prop,
                             boolean grouped)

PropertyProjection

protected PropertyProjection(String prop)
Method Detail

getPropertyName

public String getPropertyName()

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

isGrouped

public boolean isGrouped()
Description copied from interface: Projection
Is this projection fragment (SELECT clause) also part of the GROUP BY

Specified by:
isGrouped in interface Projection
Overrides:
isGrouped in class SimpleProjection
Returns:
True if the projection is also part of the GROUP BY; false otherwise.

toGroupSqlString

public String toGroupSqlString(Criteria criteria,
                               CriteriaQuery criteriaQuery)
                        throws HibernateException
Description copied from interface: Projection
Render the SQL fragment to be used in the GROUP BY clause

Specified by:
toGroupSqlString in interface Projection
Overrides:
toGroupSqlString in class SimpleProjection
Parameters:
criteria - The local criteria to which this project is attached (for resolution).
criteriaQuery - The overall criteria query instance.
Returns:
The SQL fragment to plug into the GROUP BY
Throws:
HibernateException - Indicates a problem performing the rendering


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