org.jboss.arquillian.core.spi

Interface ServiceLoader

public interface ServiceLoader

ServiceLoader

Version:

$Revision: $

Author:

Aslak Knutsen

Method Summary

Modifier and Type	Method and Description
<T> Collection<T>	all(Class<T> serviceClass) Load multiple service implementations.
<T> T	onlyOne(Class<T> serviceClass) Load a single service implementation.
<T> T	onlyOne(Class<T> serviceClass, Class<? extends T> defaultServiceClass) Load a single service implementation.

Method Detail

all

<T> Collection<T> all(Class<T> serviceClass)

Load multiple service implementations.

Type Parameters:

T -

Parameters:

serviceClass - The service interface to load a implementations for

Returns:

A Collection of all instances of serviceClass

onlyOne

<T> T onlyOne(Class<T> serviceClass)

Load a single service implementation. Method should throw IllegalStateException if multiple instances of serviceClass found.

Type Parameters:

T -

Parameters:

serviceClass - The service interface to load a implementation for

Returns:

A instance of serviceClass

Throws:

IllegalStateException - if more then one implementation of serviceClass found

onlyOne

<T> T onlyOne(Class<T> serviceClass,
              Class<? extends T> defaultServiceClass)

Load a single service implementation. Method should returns a new instance of defaultServiceClass if no other instance is found.

Type Parameters:

T -

Parameters:

serviceClass - The service interface to load a implementation for

defaultServiceClass - If no other implementations found, create a instance of this class

Returns:

A instance of serviceClass