com.ikokoon.toolkit

Class ObjectFactory

java.lang.Object

com.ikokoon.toolkit.ObjectFactory

public abstract class ObjectFactory
extends Object

This is an abstract factory. Classes are selected for construction according to the best match between the parameters and the solid implementation of the class.

Since:

02.09.08

Version:

01.00

Author:

Michael Couck

Method Summary

Modifier and Type	Method and Description
protected static <E> Constructor<E>	getConstructor(Class<E> klass, Object[] allParameters, List<Object> parameters) Finds a constructor in a class that has a signature that includes some the parameters in the parameter list on a best match principal.
static <E> E	getObject(Class<E> klass, Object... allParameters) This method instantiates a class based on the solid implementation class passed as a parameter and the parameters.

Methods inherited from class java.lang.Object

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

Method Detail

getObject

public static <E> E getObject(Class<E> klass,
                              Object... allParameters)

This method instantiates a class based on the solid implementation class passed as a parameter and the parameters. A best match between the two parameters determines the class to be instantiated.

Type Parameters:

E - the desired class to be instantiated

Parameters:

klass - the class to be instantiated

allParameters - the parameters for the constructor, these cannot be primitives and the parameters in the constructor have to be objects as well, not primitives

Returns:

the class that best matches the desired class and the parameters for constructors

getConstructor

protected static <E> Constructor<E> getConstructor(Class<E> klass,
                                                   Object[] allParameters,
                                                   List<Object> parameters)

Finds a constructor in a class that has a signature that includes some the parameters in the parameter list on a best match principal. Note that this method will return the first constructor that has all the parameters in one of the permutations even if there is another constructor that has more parameters in another of the permutations.

Type Parameters:

E - the type to return

Parameters:

klass - the class look for a constructor in

allParameters - all the parameters that are available for the constructor

parameters - the parameters that were collected for the best match constructor

Returns:

the constructor that has all the parameters