javax.persistence.osgi
Class Activator

java.lang.Object
  javax.persistence.osgi.Activator

All Implemented Interfaces:

PersistenceProviderResolver

public class Activator
extends java.lang.Object
implements PersistenceProviderResolver

Uses OSGi services to discover JPA persistence providers Also acts as a resolver class (called by the Persistence class when resolving providers).

Field Summary

static java.lang.String

PERSISTENCE_PROVIDER

Constructor Summary

Activator()

Method Summary

java.util.List<PersistenceProvider>	getPersistenceProviders() Resolve/return existing providers (Implementation method for the ProviderResolver interface.)
java.lang.String	getProviderName(ServiceReference ref) Assumes that provider services are registered with property that indicates the name of the provider impl class.
protected java.util.Map<java.lang.String,PersistenceProvider>	getProviders()
protected void	removeProvider(ServiceReference ref) Remove the provider keyed by it's name.
void	start(BundleContext context)
void	stop(BundleContext context)

Methods inherited from class java.lang.Object

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

Field Detail

PERSISTENCE_PROVIDER

public static final java.lang.String PERSISTENCE_PROVIDER

See Also:

Constant Field Values

Constructor Detail

Activator

public Activator()

Method Detail

start

public void start(BundleContext context)
           throws java.lang.Exception

Throws:

java.lang.Exception

removeProvider

protected void removeProvider(ServiceReference ref)

Remove the provider keyed by it's name.

stop

public void stop(BundleContext context)
          throws java.lang.Exception

Throws:

java.lang.Exception

getProviderName

public java.lang.String getProviderName(ServiceReference ref)

Assumes that provider services are registered with property that indicates the name of the provider impl class.

getProviders

protected java.util.Map<java.lang.String,PersistenceProvider> getProviders()

getPersistenceProviders

public java.util.List<PersistenceProvider> getPersistenceProviders()

Resolve/return existing providers (Implementation method for the ProviderResolver interface.)

Specified by:

getPersistenceProviders in interface PersistenceProviderResolver

Returns:

list of persistence providers available in the environment