org.hibernate.transform

Class AliasToBeanResultTransformer

java.lang.Object

org.hibernate.transform.AliasToBeanResultTransformer

All Implemented Interfaces:

Serializable, ResultTransformer

public class AliasToBeanResultTransformer
extends Object
implements ResultTransformer, Serializable

Result transformer that allows to transform a result to a user specified class which will be populated via setter methods or fields matching the alias names.

 List resultWithAliasedBean = s.createCriteria(Enrolment.class)
                        .createAlias("student", "st")
                        .createAlias("course", "co")
                        .setProjection( Projections.projectionList()
                                        .add( Projections.property("co.description"), "courseDescription" )
                        )
                        .setResultTransformer( new AliasToBeanResultTransformer(StudentDTO.class) )
                        .list();
 

  StudentDTO dto = (StudentDTO)resultWithAliasedBean.get(0);
        

Author:

max

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
AliasToBeanResultTransformer(Class resultClass)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
int	hashCode()
List	transformList(List collection) Here we have an opportunity to perform transformation on the query result as a whole.
Object	transformTuple(Object[] tuple, String[] aliases) Tuples are the elements making up each "row" of the query result.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AliasToBeanResultTransformer

public AliasToBeanResultTransformer(Class resultClass)

Method Detail

transformTuple

public Object transformTuple(Object[] tuple,
                             String[] aliases)

Description copied from interface: ResultTransformer

Tuples are the elements making up each "row" of the query result. The contract here is to transform these elements into the final row.

Specified by:

transformTuple in interface ResultTransformer

Parameters:

tuple - The result elements

aliases - The result aliases ("parallel" array to tuple)

Returns:

The transformed row.

transformList

public List transformList(List collection)

Description copied from interface: ResultTransformer

Here we have an opportunity to perform transformation on the query result as a whole. This might be useful to convert from one collection type to another or to remove duplicates from the result, etc.

Specified by:

transformList in interface ResultTransformer

Parameters:

collection - The result.

Returns:

The transformed result.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object