org.eclipse.smila.utils.service
Class ServiceUtils

java.lang.Object
  org.eclipse.smila.utils.service.ServiceUtils

public final class ServiceUtils
extends java.lang.Object

The Class ServiceHelper.

Method Summary

static void	checkIsServiceBound(java.lang.Object service, java.lang.Class<?> type, java.lang.String message) Check the given service== null and in case throws an exception.
static <T> T	getService(BundleContext context, java.lang.Class<T> clazz) Gets the service with default wait delay.
static <T> T	getService(BundleContext context, java.lang.Class<T> clazz, long timeout) Uses a ServiceTracker to get the given DeclarativeService.
static <T> T	getService(BundleContext context, ServiceReference reference, java.lang.Class<T> clazz) resolve a service reference.
static <T> T	getService(java.lang.Class<T> clazz) Gets the service with default wait delay using the BundleContext of UtilsActivator.
static <T> T	getService(java.lang.Class<T> clazz, long timeout) Gets the service with the given wait delay using the BundleContext of UtilsActivator.
static <T> T	getService(ServiceReference reference, java.lang.Class<T> clazz) resolve a service reference.
static ServiceReference[]	getServiceReferences(BundleContext context, java.lang.String clazz) Uses a ServiceTracker to get the service references.
static ServiceReference[]	getServiceReferences(java.lang.Class<?> clazz) Uses a ServiceTracker to get the service references.
static ServiceReference[]	getServiceReferences(java.lang.String clazz) Uses a ServiceTracker to get the service references.

Methods inherited from class java.lang.Object

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

Method Detail

getService

public static <T> T getService(BundleContext context,
                               java.lang.Class<T> clazz,
                               long timeout)
                    throws java.lang.InterruptedException

Uses a ServiceTracker to get the given DeclarativeService.

Type Parameters:

T - expected service class

Parameters:

clazz - the service class of the DeclarativeService interface

timeout - the number of milliseconds to wait for the ServiceTracker to find the service

context - the context

Returns:

the DeclarativeService.

Throws:

java.lang.InterruptedException - a InterruptedException

getService

public static <T> T getService(BundleContext context,
                               java.lang.Class<T> clazz)
                    throws java.lang.InterruptedException

Gets the service with default wait delay.

Type Parameters:

T - expected service class

Parameters:

clazz - the clazz

context - the context

Returns:

the service

Throws:

java.lang.InterruptedException - the interrupted exception

getService

public static <T> T getService(java.lang.Class<T> clazz,
                               long timeout)
                    throws java.lang.InterruptedException

Gets the service with the given wait delay using the BundleContext of UtilsActivator.

Type Parameters:

T - expected service class

Parameters:

clazz - the clazz

timeout - the number of milliseconds to wait for the ServiceTracker to find the service

Returns:

the service

Throws:

java.lang.InterruptedException - the interrupted exception

getService

public static <T> T getService(java.lang.Class<T> clazz)
                    throws java.lang.InterruptedException

Gets the service with default wait delay using the BundleContext of UtilsActivator.

Type Parameters:

T - expected service class

Parameters:

clazz - the clazz

Returns:

the service

Throws:

java.lang.InterruptedException - the interrupted exception

getServiceReferences

public static ServiceReference[] getServiceReferences(BundleContext context,
                                                      java.lang.String clazz)

Uses a ServiceTracker to get the service references.

Parameters:

clazz - the class name of the DeclarativeService interface

context - the context

Returns:

the service references

getServiceReferences

public static ServiceReference[] getServiceReferences(java.lang.String clazz)

Uses a ServiceTracker to get the service references.

Parameters:

clazz - the class name of the DeclarativeService interface

Returns:

the service references

getServiceReferences

public static ServiceReference[] getServiceReferences(java.lang.Class<?> clazz)

Uses a ServiceTracker to get the service references.

Parameters:

clazz - the class of the DeclarativeService interface

Returns:

the service references

getService

public static <T> T getService(BundleContext context,
                               ServiceReference reference,
                               java.lang.Class<T> clazz)

resolve a service reference.

Type Parameters:

T - expected service class

Parameters:

context - the context

reference - the reference

clazz - expected service class

Returns:

the service instance.

getService

public static <T> T getService(ServiceReference reference,
                               java.lang.Class<T> clazz)

resolve a service reference.

Type Parameters:

T - expected service class

Parameters:

reference - the reference

clazz - expected service class

Returns:

the service instance.

checkIsServiceBound

public static void checkIsServiceBound(java.lang.Object service,
                                       java.lang.Class<?> type,
                                       java.lang.String message)

Check the given service== null and in case throws an exception.

Parameters:

service - the service

type - the type

message - the message

Throws:

ServiceNotBoundException - the service not bound exception