org.wicketstuff.osgi.util

Class OsgiServiceLookup

java.lang.Object

org.wicketstuff.osgi.util.OsgiServiceLookup

public class OsgiServiceLookup
extends Object

A utility class for looking up services from the OSGi registry. The methods of this class wait for the service for a given timeout (default 10 seconds) and throw a WicketRuntimeException when no matching service becomes available during this period.

NOTE: Prefixing some method calls with our own class name is a workaround for a bug in the Oracle Java compiler, which does not occur when compiling in Eclipse.

Author:

Harald Wellmann

Field Summary

Fields

Modifier and Type	Field and Description
static long	DEFAULT_TIMEOUT

Constructor Summary

Constructors

Constructor and Description
OsgiServiceLookup()

Method Summary

Methods

Modifier and Type	Method and Description
static <T> T	getOsgiService(org.osgi.framework.BundleContext bc, Class<T> type)
static <T> T	getOsgiService(org.osgi.framework.BundleContext bc, Class<T> type, long timeout)
static <T> T	getOsgiService(org.osgi.framework.BundleContext bc, Class<T> type, long timeout, Map<String,String> props) Returns a service matching the given criteria.
static <T> T	getOsgiService(org.osgi.framework.BundleContext bc, Class<T> type, Map<String,String> props)
static <T> T	getOsgiService(org.osgi.framework.BundleContext bc, String className)
static <T> T	getOsgiService(org.osgi.framework.BundleContext bc, String className, long timeout, Map<String,String> props)

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_TIMEOUT

public static final long DEFAULT_TIMEOUT

See Also:

Constant Field Values

Constructor Detail

OsgiServiceLookup

public OsgiServiceLookup()

Method Detail

getOsgiService

public static <T> T getOsgiService(org.osgi.framework.BundleContext bc,
                   String className)

getOsgiService

public static <T> T getOsgiService(org.osgi.framework.BundleContext bc,
                   Class<T> type)

getOsgiService

public static <T> T getOsgiService(org.osgi.framework.BundleContext bc,
                   Class<T> type,
                   Map<String,String> props)

getOsgiService

public static <T> T getOsgiService(org.osgi.framework.BundleContext bc,
                   Class<T> type,
                   long timeout,
                   Map<String,String> props)

Returns a service matching the given criteria.

Type Parameters:

T - class implemented or extended by the service

Parameters:

bc - bundle context for accessing the OSGi registry

type - class implemented or extended by the service

timeout - maximum wait period in milliseconds

props - properties to be matched by the service

Returns:

matching service (not null)

Throws:

org.apache.wicket.WicketRuntimeException

getOsgiService

public static <T> T getOsgiService(org.osgi.framework.BundleContext bc,
                   Class<T> type,
                   long timeout)

getOsgiService

public static <T> T getOsgiService(org.osgi.framework.BundleContext bc,
                   String className,
                   long timeout,
                   Map<String,String> props)