Module io.github.mmm.base

Package io.github.mmm.base.service

Class ServiceHelper

java.lang.Object

io.github.mmm.base.service.ServiceHelper

public final class ServiceHelper
extends Object

Helper class for ServiceLoader.

Since:

1.0.0

Method Summary

Modifier and Type	Method	Description
static final <S> void	all(ServiceLoader<S> serviceLoader, Collection<S> services)
static final <S> void	all(ServiceLoader<S> serviceLoader, Collection<S> services, int min)
static final <S, K> void	all(ServiceLoader<S> serviceLoader, Map<K,S> services, Function<S,K> keyFunction)
static final <S, K> void	all(ServiceLoader<S> serviceLoader, Map<K,S> services, Function<S,K> keyFunction, int min)
static final <S> S	singleton(ServiceLoader<S> serviceLoader)
static final <S> S	singleton(ServiceLoader<S> serviceLoader, boolean unique)

Methods inherited from class java.lang.Object

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

Method Details

singleton

public static final <S> S singleton(ServiceLoader<S> serviceLoader)

Type Parameters:

S - type of the service.

Parameters:

serviceLoader - the ServiceLoader that has to be provided from the module declaring the service API and holds the uses statement in its module-info.

Returns:

the requested service.

singleton

public static final <S> S singleton(ServiceLoader<S> serviceLoader,
 boolean unique)

Type Parameters:

S - type of the service.

Parameters:

serviceLoader - the ServiceLoader that has to be provided from the module declaring the service API and holds the uses statement in its module-info.

unique - - true if an exception is thrown if the service is not unique, false otherwise (allow overriding default).

Returns:

the requested service.

all

public static final <S> void all(ServiceLoader<S> serviceLoader,
 Collection<S> services)

Type Parameters:

S - type of the service.

Parameters:

serviceLoader - the ServiceLoader that has to be provided from the module declaring the service API and holds the uses statement in its module-info.

services - the Collection where to add the services from the given ServiceLoader.

all

public static final <S> void all(ServiceLoader<S> serviceLoader,
 Collection<S> services,
 int min)

Type Parameters:

S - type of the service.

Parameters:

serviceLoader - the ServiceLoader that has to be provided from the module declaring the service API and holds the uses statement in its module-info.

services - the Collection where to add the services from the given ServiceLoader.

min - the minimum number of services required.

all

public static final <S,
K> void all(ServiceLoader<S> serviceLoader,
 Map<K,S> services,
 Function<S,K> keyFunction)

Type Parameters:

S - type of the service.

K - type of the Map key.

Parameters:

serviceLoader - the ServiceLoader that has to be provided from the module declaring the service API and holds the uses statement in its module-info.

services - the Collection where to add the services from the given ServiceLoader.

keyFunction - the Function to get the Map key from the service.

all

public static final <S,
K> void all(ServiceLoader<S> serviceLoader,
 Map<K,S> services,
 Function<S,K> keyFunction,
 int min)

Type Parameters:

S - type of the service.

K - type of the Map key.

Parameters:

serviceLoader - the ServiceLoader that has to be provided from the module declaring the service API and holds the uses statement in its module-info.

services - the Collection where to add the services from the given ServiceLoader.

keyFunction - the Function to get the Map key from the service.

min - the minimum number of services required.