de.smartics.properties.resource.util
Class AbstractServiceFactory<T>

java.lang.Object
  de.smartics.properties.resource.util.AbstractServiceFactory<T>

Type Parameters:

T - the type of the service to instantiate.

Direct Known Subclasses:

AbstractJndiBackedServiceFactory

public abstract class AbstractServiceFactory<T>
     
     

      
      extends 
      
      Object
     
     

A factory to create instances of a given type using the Java Service API.

Constructor Summary

protected

AbstractServiceFactory(InstanceCreator<T> creator) Default constructor.

Method Summary

T	create() Creates an instance of a service in META-INF/services.
T	create(Class<? extends T> defaultType) Creates an instance of a service in META-INF/services.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractServiceFactory

protected AbstractServiceFactory(InstanceCreator<T> creator)

Default constructor.

Parameters:

creator - the creator of instances created as defaults by this factory.

Throws:

NullPointerException - if creator is null.

Method Detail

create

public final T create()
               throws ResourceException

Creates an instance of a service in META-INF/services.

Returns:

instance of the desired type.

Throws:

ResourceException - if a type cannot be instantiated.

create

public final T create(Class<? extends T> defaultType)
               throws ResourceException

Creates an instance of a service in META-INF/services.

Parameters:

defaultType - the default type to use if there is no configuration file found in META-INF/services.

Returns:

instance of the desired type.

Throws:

ResourceException - if a type cannot be instantiated.