com.bea.p13n.advisor
Class AdvisletRegistry

java.lang.Object
  |
  +--com.bea.p13n.advisor.AdvisletRegistry

public abstract class AdvisletRegistry

extends java.lang.Object

implements AdvisletRegistryConstants

The AdvisletRegistry allows an Advislet to be associated with a given URI prefix. This is achieved by use of the advisor-registry.xml file which specifies what advislets should be registered and against which URI prefixes.

Constructor Summary

AdvisletRegistry()

Method Summary

static AdvisletChainElement	get(java.lang.String key) Retrieves the AdvisletChainElement associated with a given key.
static AdviceTransform	getAdviceTransform(java.lang.String key) Retrieves the AdviceTransform associated with a key.
static Advislet	getAdvislet(java.lang.String uriPrefix) Retrieves the Advislet associated with a URI prefix.
static java.lang.String	getUriPrefix(java.lang.String uri) Trims a URI of the form: protocol://arguments and returns the protocol component.
static void	initialize() Initializes the registry by reading the default xml configuration file, loading the advislets defined and registering them against the URI prefixes supplied.
static void	initialize(java.io.InputStream inputStream) Initializes the registry by the xml configuration from an InputStream, loading the advislets defined and registering them against the URI prefixes supplied.
static void	register(java.lang.String key, AdvisletChainElement advisletElement) Registers an AdvisletChainElement and associates it with a key, which in the case of an Advislet is expected to be the URI prefix which will be used to refer to it.
static void	unregister(java.lang.String key, AdvisletChainElement advisletElement) Unregisters an AdvisletChainElement and disassociates from with a key.

Methods inherited from class java.lang.Object

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

Constructor Detail

AdvisletRegistry

public AdvisletRegistry()

Method Detail

register

public static void register(java.lang.String key,
                            AdvisletChainElement advisletElement)

Registers an AdvisletChainElement and associates it with a key, which in the case of an Advislet is expected to be the URI prefix which will be used to refer to it.

Parameters:

key - The key to associate with the given element.

advisletElement - The element to register.

unregister

public static void unregister(java.lang.String key,
                              AdvisletChainElement advisletElement)

Unregisters an AdvisletChainElement and disassociates from with a key.

Parameters:

key - The key of the associated element.

advisletElement - The element to unregister.

get

public static AdvisletChainElement get(java.lang.String key)
                                throws ElementNotFoundException

Retrieves the AdvisletChainElement associated with a given key.

Parameters:

key - The key to use to lookup the AdvisletChainElement.

Returns:

The advislet registered against the key supplied.

Throws:

AdvisletNotFoundException - thrown when no element is registered against the supplied key

getAdvislet

public static Advislet getAdvislet(java.lang.String uriPrefix)
                            throws ElementNotFoundException

Retrieves the Advislet associated with a URI prefix.

Parameters:

uriPrefix - The prefix to use to lookup the Advislet.

Returns:

The advislet registered against the prefix supplied.

Throws:

AdvisletNotFoundException - thrown when no advislet is registered against the supplied prefix

getAdviceTransform

public static AdviceTransform getAdviceTransform(java.lang.String key)
                                          throws ElementNotFoundException

Retrieves the AdviceTransform associated with a key.

Parameters:

key - The key to use to lookup the AdviceTransform.

Returns:

The advisletTransform registered against the key supplied.

Throws:

AdvisletNotFoundException - thrown when no AdvisletTransform is registered against the supplied prefix

getUriPrefix

public static java.lang.String getUriPrefix(java.lang.String uri)

Trims a URI of the form: protocol://arguments and returns the protocol component.

Parameters:

uri - The URI to be trimmed.

Returns:

The URI prefix of the supplied URI.

Throws:

java.lang.IllegalArgumentException - thrown when URI parsing fails

initialize

public static void initialize(java.io.InputStream inputStream)

Initializes the registry by the xml configuration from an InputStream, loading the advislets defined and registering them against the URI prefixes supplied. Any existing advislets are not unregistered, and new registrations are appended.

initialize

public static void initialize()

Initializes the registry by reading the default xml configuration file, loading the advislets defined and registering them against the URI prefixes supplied.