org.apache.tapestry5.ioc.internal
Class RegistryWrapper

java.lang.Object
  org.apache.tapestry5.ioc.internal.RegistryWrapper

All Implemented Interfaces:

ObjectLocator, Registry

public class RegistryWrapper
extends Object
implements Registry

A wrapper around InternalRegistry that exists to expand symbols in a service id before invoking ObjectLocator.getService(String, Class).

Constructor Summary

RegistryWrapper(InternalRegistry registry)

Method Summary

<T> T	autobuild(Class<T> clazz) Autobuilds a class by finding the public constructor with the most parameters.
<T> T	autobuild(String description, Class<T> clazz) Preferred version of ObjectLocator.autobuild(Class) that tracks the operation using OperationTracker.invoke(String, Invokable).
void	cleanupThread() Invoked at the end of a request to discard any thread-specific information accumulated during the current request.
<T> T	getObject(Class<T> objectType, AnnotationProvider annotationProvider) Obtains an object indirectly, using the MasterObjectProvider service.
<T> T	getService(Class<T> serviceInterface) Locates a service given a service interface and (optionally) some marker annotation types.
<T> T	getService(Class<T> serviceInterface, Class<? extends Annotation>... markerTypes) Locates a service given a service interface and (optionally) some marker annotation types.
<T> T	getService(String serviceId, Class<T> serviceInterface) Obtains a service via its unique service id.
void	performRegistryStartup() Invoked to eagerly load services marked with the EagerLoad annotation, and to execute all contributions to the Startup service.
<T> T	proxy(Class<T> interfaceClass, Class<? extends T> implementationClass) Creates a proxy.
void	shutdown() Shuts down a Registry instance.

Methods inherited from class java.lang.Object

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

Constructor Detail

RegistryWrapper

public RegistryWrapper(InternalRegistry registry)

Method Detail

cleanupThread

public void cleanupThread()

Description copied from interface: Registry

Invoked at the end of a request to discard any thread-specific information accumulated during the current request.

Specified by:

cleanupThread in interface Registry

See Also:

PerthreadManager, ThreadCleanupListener

shutdown

public void shutdown()

Description copied from interface: Registry

Shuts down a Registry instance. Notifies all listeners that the registry has shutdown. Further method invocations on the Registry are no longer allowed, and the Registry instance should be discarded.

Specified by:

shutdown in interface Registry

See Also:

RegistryShutdownHub, RegistryShutdownListener

getObject

public <T> T getObject(Class<T> objectType,
                       AnnotationProvider annotationProvider)

Description copied from interface: ObjectLocator

Obtains an object indirectly, using the MasterObjectProvider service.

Specified by:

getObject in interface ObjectLocator

Parameters:

objectType - the type of object to be returned

annotationProvider - provides access to annotations on the field or parameter for which a value is to be obtained, which may be utilized in selecting an appropriate object, use null when annotations are not available (in which case, selection will be based only on the object type)

Returns:

the requested object

See Also:

ObjectProvider

getService

public <T> T getService(String serviceId,
                        Class<T> serviceInterface)

Description copied from interface: ObjectLocator

Obtains a service via its unique service id. Returns the service's proxy. The service proxy implements the same interface as the actual service, and is used to instantiate the actual service only as needed (this is transparent to the application).

Specified by:

getService in interface ObjectLocator

Parameters:

serviceId - unique Service id used to locate the service object (may contain symbols, which will be expanded), case is ignored

serviceInterface - the interface implemented by the service (or an interface extended by the service interface)

Returns:

the service instance

getService

public <T> T getService(Class<T> serviceInterface)

Description copied from interface: ObjectLocator

Locates a service given a service interface and (optionally) some marker annotation types. A single service must implement the service interface (which * can be hard to guarantee) and by marked by all the marker types. The search takes into account inheritance of the service interface (not the service implementation), which may result in a failure due to extra matches.

Specified by:

getService in interface ObjectLocator

Parameters:

serviceInterface - the interface the service implements

Returns:

the service's proxy

See Also:

Marker

getService

public <T> T getService(Class<T> serviceInterface,
                        Class<? extends Annotation>... markerTypes)

Description copied from interface: ObjectLocator

Locates a service given a service interface and (optionally) some marker annotation types. A single service must implement the service interface (which * can be hard to guarantee) and by marked by all the marker types. The search takes into account inheritance of the service interface (not the service implementation), which may result in a failure due to extra matches. The ability to specify marker annotation types was added in 5.3

Specified by:

getService in interface ObjectLocator

Parameters:

serviceInterface - the interface the service implements

markerTypes - Markers used to select a specific service that implements the interface

Returns:

the service's proxy

See Also:

Marker

autobuild

public <T> T autobuild(Class<T> clazz)

Description copied from interface: ObjectLocator

Autobuilds a class by finding the public constructor with the most parameters. Services and other resources or dependencies will be injected into the parameters of the constructor and into private fields marked with the Inject annotation. There are two cases: constructing a service implementation, and constructing an arbitrary object. In the former case, many service resources are also available for injection, not just dependencies or objects provided via MasterObjectProvider.provide(Class, AnnotationProvider, ObjectLocator, boolean).

Specified by:

autobuild in interface ObjectLocator

Parameters:

clazz - the type of object to instantiate

Returns:

the instantiated instance

See Also:

MasterObjectProvider

autobuild

public <T> T autobuild(String description,
                       Class<T> clazz)

Description copied from interface: ObjectLocator

Preferred version of ObjectLocator.autobuild(Class) that tracks the operation using OperationTracker.invoke(String, Invokable).

Specified by:

autobuild in interface ObjectLocator

Parameters:

description - description used with OperationTracker

clazz - the type of object to instantiate

Returns:

the instantiated instance

See Also:

MasterObjectProvider

performRegistryStartup

public void performRegistryStartup()

Description copied from interface: Registry

Invoked to eagerly load services marked with the EagerLoad annotation, and to execute all contributions to the Startup service.

Specified by:

performRegistryStartup in interface Registry

proxy

public <T> T proxy(Class<T> interfaceClass,
                   Class<? extends T> implementationClass)

Description copied from interface: ObjectLocator

Creates a proxy. The proxy will defer invocation of ObjectLocator.autobuild(Class) until just-in-time (that is, first method invocation). In a limited number of cases, it is necessary to use such a proxy to prevent service construction cycles, particularly when contributing (directly or indirectly) to the MasterObjectProvider (which is itself at the heart of autobuilding).

If the class file for the class is a file on the file system (not a file packaged in a JAR), then the proxy will autoreload: changing the class file will result in the new class being reloaded and re-instantiated (with dependencies).

Specified by:

proxy in interface ObjectLocator

Parameters:

interfaceClass - the interface implemented by the proxy

implementationClass - a concrete class that implements the interface

Returns:

a proxy

See Also:

ObjectLocator.autobuild(Class)