co.paralleluniverse.common.util

Class ServiceUtil

java.lang.Object

co.paralleluniverse.common.util.ServiceUtil

public final class ServiceUtil
extends java.lang.Object

A utility class for loading services with ServiceLoader.

Method Summary

Modifier and Type	Method and Description
static <T> T	loadSingletonService(java.lang.Class<T> type) Loads a service of the given type and ensures it has exactly one implementation.
static <T> T	loadSingletonServiceOrNull(java.lang.Class<T> type) Loads a service of the given type and ensures it has either one implementation or none.

Methods inherited from class java.lang.Object

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

Method Detail

loadSingletonServiceOrNull

public static <T> T loadSingletonServiceOrNull(java.lang.Class<T> type)

Loads a service of the given type and ensures it has either one implementation or none.

Parameters:

type - The service's type.

Returns:

The service implementation if found, or null if not.

Throws:

java.lang.Error - if more than one implementation of the service have been found.

loadSingletonService

public static <T> T loadSingletonService(java.lang.Class<T> type)

Loads a service of the given type and ensures it has exactly one implementation.

Parameters:

type - The service's type.

Returns:

The service implementation.

Throws:

java.lang.Error - if no implementation has been found or if more than one implementation of the service have been found.