org.apache.tamaya.spi

Interface ServiceContext

public interface ServiceContext

This class models the component that is managing the lifecycle current the services used by the Configuration API.

Method Summary

Modifier and Type	Method and Description
static ServiceContext	getInstance() Get the current ServiceContext.
<T> Optional<T>	getService(Class<T> serviceType) Access a service singleton via its type.
<T> List<T>	getServices(Class<T> serviceType) Access a list current services, given its type.
default int	ordinal()

Method Detail

getInstance

static ServiceContext getInstance()

Get the current ServiceContext. If necessary the ServiceContext will be laziliy loaded.

Returns:

the ServiceContext to be used.

ordinal

default int ordinal()

Returns:

ordinal of the ServiceContext. The one with the highest ordinal will be taken.

getService

<T> Optional<T> getService(Class<T> serviceType)

Access a service singleton via its type. If multiple implementations for the very serviceType exist then the one with the highest Priority will be used.

Parameters:

serviceType - the service type.

Returns:

The instance to be used, never null

Throws:

ConfigException - if there are multiple service implementations with the maximum priority.

getServices

<T> List<T> getServices(Class<T> serviceType)

Access a list current services, given its type. The bootstrap mechanism should order the instance for precedence, hereby the most significant should be first in order.

Parameters:

serviceType - the service type.

Returns:

The instance to be used, never null