Package ej.service.loader

Class MetaInfServiceLoader

java.lang.Object

ej.service.loader.SimpleServiceLoader

ej.service.loader.DependencyInjectionServiceLoader

ej.service.loader.MetaInfServiceLoader

All Implemented Interfaces:

ServiceLoader

public class MetaInfServiceLoader
extends DependencyInjectionServiceLoader

Service loader that retrieves services implementations following standard Java service definition.

Services are defined in files located in "/META-INF/services/" folder:

• the file is named after the implemented service (fully qualified name),
• the content of the file is the fully qualified name of the implementation class.

Field Summary

Fields

Modifier and Type	Field	Description
static String	SERVICES_FOLDER	Folder where the services are defined.

Fields inherited from class ej.service.loader.SimpleServiceLoader

services

Constructor Summary

Constructors

Constructor	Description
MetaInfServiceLoader()	Creates a new META-INF properties service loader.

Method Summary

Modifier and Type	Method	Description
protected String	getImplementationName(String key)	Gets the implementation class name for the given service name.

Methods inherited from class ej.service.loader.DependencyInjectionServiceLoader

createAlternativeImplementation

Methods inherited from class ej.service.loader.SimpleServiceLoader

checkServicePermission, getService, putService

Methods inherited from class java.lang.Object

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

Field Detail

SERVICES_FOLDER

public static final String SERVICES_FOLDER

Folder where the services are defined.

See Also:

Constant Field Values

Constructor Detail

MetaInfServiceLoader

public MetaInfServiceLoader()

Creates a new META-INF properties service loader.

Method Detail

getImplementationName

@Nullable
protected String getImplementationName(String key)

Description copied from class: DependencyInjectionServiceLoader

Gets the implementation class name for the given service name.

Specified by:

getImplementationName in class DependencyInjectionServiceLoader

Parameters:

key - the service name.

Returns:

the implementation class name, or null if none.