Top Description Fields Constructors Methods
org.hibernate.transform

public Class AliasToBeanResultTransformer

extends Object
implements ResultTransformer, Serializable
Class Inheritance
All Implemented Interfaces
java.io.Serializable, org.hibernate.transform.ResultTransformer
Imports
java.io.Serializable, java.util.Arrays, .List, org.hibernate.HibernateException, org.hibernate.property.ChainedPropertyAccessor, .PropertyAccessor, .PropertyAccessorFactory, .Setter
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

Field Summary

Modifier and TypeField and Description
private String[]
aliases

private boolean
isInitialized

private final Class<T>
resultClass

private Setter[]
setters

Constructor Summary

AccessConstructor and Description
public
AliasToBeanResultTransformer(Class<T> resultClass)

Method Summary

Modifier and TypeMethod and Description
private void
check(String[] aliases)

public boolean
equals(Object
the reference object with which to compare.
o)

Overrides java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.
public int
hashCode()

Overrides java.lang.Object.hashCode.

Returns a hash code value for the object.
private void
initialize(String[] aliases)

public List<E>
transformList(List<E>
The result.
collection)

Implements org.hibernate.transform.ResultTransformer.transformList.

Here we have an opportunity to perform transformation on the query result as a whole.
public Object
transformTuple(Object[]
The result elements
tuple, String[]
The result aliases ("parallel" array to tuple)
aliases)

Implements org.hibernate.transform.ResultTransformer.transformTuple.

Tuples are the elements making up each "row" of the query result.
Inherited from java.lang.Object:
clonefinalizegetClassnotifynotifyAlltoStringwaitwaitwait

Field Detail

aliasesback to summary
private String[] aliases
isInitializedback to summary
private boolean isInitialized
resultClassback to summary
private final Class<T> resultClass
settersback to summary
private Setter[] setters

Constructor Detail

AliasToBeanResultTransformerback to summary
public AliasToBeanResultTransformer(Class<T> resultClass)

Method Detail

checkback to summary
private void check(String[] aliases)
equalsback to summary
public boolean equals(Object o)

Overrides java.lang.Object.equals.

Doc from java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

  • It is reflexive: for any non-null reference value x, x.equals(x) should return true.
  • It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
  • It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
  • It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
  • For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Parameters
o:Object

the reference object with which to compare.

Returns:boolean

true if this object is the same as the obj argument; false otherwise.

hashCodeback to summary
public int hashCode()

Overrides java.lang.Object.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

  • Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
  • If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
  • It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.
Returns:int

a hash code value for this object.

initializeback to summary
private void initialize(String[] aliases)
transformListback to summary
public List<E> transformList(List<E> collection)

Implements org.hibernate.transform.ResultTransformer.transformList.

Doc from org.hibernate.transform.ResultTransformer.transformList.

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.

Parameters
collection:List<E>

The result.

Returns:List<E>

The transformed result.

transformTupleback to summary
public Object transformTuple(Object[] tuple, String[] aliases)

Implements org.hibernate.transform.ResultTransformer.transformTuple.

Doc from org.hibernate.transform.ResultTransformer.transformTuple.

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

Parameters
tuple:Object[]

The result elements

aliases:String[]

The result aliases ("parallel" array to tuple)

Returns:Object

The transformed row.