org.mule.runtime.core.api.registry

Class AbstractServiceRegistry

java.lang.Object

org.mule.runtime.core.api.registry.AbstractServiceRegistry

All Implemented Interfaces:

ServiceRegistry

Direct Known Subclasses:

SpiServiceRegistry

public abstract class AbstractServiceRegistry
extends Object
implements ServiceRegistry

Base implementation of ServiceRegistry that enforce common behaviour for all implementations.

Constructor Summary

Constructors

Constructor and Description
AbstractServiceRegistry()

Method Summary

Modifier and Type	Method and Description
protected abstract <T> Collection<T>	doLookupProviders(Class<T> providerClass, ClassLoader loader) Retrieves a collection of providers.
<T> T	lookupProvider(Class<T> providerClass, ClassLoader classLoader) Searches for implementations of a particular service class.
<T> Collection<T>	lookupProviders(Class<T> providerClass, ClassLoader classLoader) If classLoader is null, then the current Thread.getContextClassLoader() will be used Searches for implementations of a particular service class using the given class loader.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractServiceRegistry

public AbstractServiceRegistry()

Method Detail

lookupProviders

public final <T> Collection<T> lookupProviders(Class<T> providerClass,
                                               ClassLoader classLoader)

If classLoader is null, then the current Thread.getContextClassLoader() will be used Searches for implementations of a particular service class using the given class loader.

Specified by:

lookupProviders in interface ServiceRegistry

Parameters:

providerClass - a Classobject indicating the class or interface of the service providers being detected.

classLoader - the class loader to be used to load provider/configuration files and instantiate provider instances. If null, it will be up to the implementation to choose a ClassLoader

Returns:

A Collection that yields provider objects for the given service, in some arbitrary order.

doLookupProviders

protected abstract <T> Collection<T> doLookupProviders(Class<T> providerClass,
                                                       ClassLoader loader)

Retrieves a collection of providers. This method will be reused to actually implement {@link #lookupProviders(Class, ClassLoader)}, and {@code {@link #lookupProvider(Class, ClassLoader)}}.

Parameters:

providerClass - a Classobject indicating the class or interface of the service providers being detected.

loader - the class loader to be used to load provider/configuration files and instantiate provider instances. If null, it will be up to the implementation to choose a ClassLoader

Returns:

A Collection that yields provider objects for the given service, in some arbitrary order.

lookupProvider

public final <T> T lookupProvider(Class<T> providerClass,
                                  ClassLoader classLoader)

Searches for implementations of a particular service class. One and only one provider is expected to be found.

Specified by:

lookupProvider in interface ServiceRegistry

Parameters:

providerClass - a Classobject indicating the class or interface of the service providers being detected.

classLoader - the class loader to be used to load provider/configuration files and instantiate provider instances. If null, it will be up to the implementation to choose a ClassLoader

Returns:

An implementation of the given service.