delight.factories.internal

Class FactoryCollectionImpl

java.lang.Object

delight.factories.internal.FactoryCollectionImpl

All Implemented Interfaces:

Factory<Object,Configuration,Dependencies>, FactoryCollection

public class FactoryCollectionImpl
extends Object
implements FactoryCollection

A simple implementation of the FactoryCollection interface. Note that this implementation is not thread-safe.

Author:

Max

Constructor Summary

Constructors

Constructor and Description
FactoryCollectionImpl()

Method Summary

Modifier and Type	Method and Description
boolean	canInstantiate(Configuration conf) This method tests whether the supplied Configuration can be instantiated into an object by this factory.
Object	create(Configuration conf, Dependencies dependencies) Creates a new instance based on the provided Configuration.
void	register(Factory f) Registers a new factory for this collection.
void	replace(Configuration configuration, Factory<?,?,?> replacement) Attempts to find a factory in this collection, which is capable of instantiating the provided configuration.

Methods inherited from class java.lang.Object

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

Constructor Detail

FactoryCollectionImpl

public FactoryCollectionImpl()

Method Detail

canInstantiate

public boolean canInstantiate(Configuration conf)

Description copied from interface: Factory

This method tests whether the supplied Configuration can be instantiated into an object by this factory.

Specified by:

canInstantiate in interface Factory<Object,Configuration,Dependencies>

Parameters:

conf - A configuration for an object to be instantiated.

Returns:

true when this factory can create an instance for the provided configuration.

create

public Object create(Configuration conf,
                     Dependencies dependencies)

Description copied from interface: Factory

Creates a new instance based on the provided Configuration.

Run-time dependencies can be provided through the dependencies type for this factory.

Specified by:

create in interface Factory<Object,Configuration,Dependencies>

Parameters:

conf - The configuration used to instantiate the object.

dependencies - Run-time dependencies for this object.

Returns:

register

public void register(Factory f)

Description copied from interface: FactoryCollection

Registers a new factory for this collection.

If a Configuration compatible with this factory is passed to subsequent calls of FactoryCollection#create(Configuration, Dependencies), this factory will be used to instantiate the object.

The collection will always use the first factory registered to instantate objects.

Specified by:

register in interface FactoryCollection

Parameters:

f - The factory to be added to the collection.

replace

public void replace(Configuration configuration,
                    Factory<?,?,?> replacement)

Description copied from interface: FactoryCollection

Attempts to find a factory in this collection, which is capable of instantiating the provided configuration.

If such a factory is found, it is replaced with the provided factory.

Specified by:

replace in interface FactoryCollection