com.sun.enterprise.module

Interface Repository

All Known Implementing Classes:

AbstractRepositoryImpl, CookedLibRepository, DirectoryBasedRepository

public interface Repository

A Repository instance is an abstraction of a set of accessible modules. Repository can be local or remote and are used to procure modules implementation based on constraints like name or version.

Author:

Jerome Dochez

Method Summary

Methods

Modifier and Type	Method and Description
boolean	addListener(RepositoryChangeListener listener) Add a listener to changes happening to this repository.
ModuleDefinition	find(String name, String version) Finds and returns a DefaultModuleDefinition instance for a module given the name and version constraints.
List<ModuleDefinition>	findAll() Returns a list of all modules available in this repository
List<ModuleDefinition>	findAll(String name) Finds and returns a list of all the available versions of a module given its name.
List<URI>	getJarLocations() Returns the plain jar files installed in this repository.
URI	getLocation() Returns the repository location
String	getName() Returns the repository name
void	initialize() Initialize the repository for use.
boolean	removeListener(RepositoryChangeListener listener) Removes a previously registered listener
void	shutdown() Shutdown the repository.

Method Detail

getName

String getName()

Returns the repository name

Returns:

repository name

getLocation

URI getLocation()

Returns the repository location

Returns:

the URI for the repository location

find

ModuleDefinition find(String name,
                    String version)

Finds and returns a DefaultModuleDefinition instance for a module given the name and version constraints.

Parameters:

name - the requested module name

version - the module version. Can be null if the caller doesn't care about the version.

Returns:

a DefaultModuleDefinition or null if not found in this repository.

findAll

List<ModuleDefinition> findAll()

Returns a list of all modules available in this repository

Returns:

a list of available modules

findAll

List<ModuleDefinition> findAll(String name)

Finds and returns a list of all the available versions of a module given its name.

Parameters:

name - the requested module name

initialize

void initialize()
                throws IOException

Initialize the repository for use. This need to be called at least once before any find methods is invoked.

Throws:

IOException - if an error occur accessing the repository

shutdown

void shutdown()
              throws IOException

Shutdown the repository. After this call return, the find methods cannot be used until initialize() is called again.

Throws:

IOException - if an error occur accessing the repository

getJarLocations

List<URI> getJarLocations()

Returns the plain jar files installed in this repository. Plain jar files are not modules, they do not have the module's metadata and can only be used when referenced from a module dependency list or when added to a class loader directly

Returns:

jar files location stored in this repository.

addListener

boolean addListener(RepositoryChangeListener listener)

Add a listener to changes happening to this repository. Repository can change during the lifetime of an execution (files added/removed/changed)

Parameters:

listener - implementation listening to this repository changes

Returns:

true if the listener was added successfully

removeListener

boolean removeListener(RepositoryChangeListener listener)

Removes a previously registered listener

Parameters:

listener - the previously registered listener

Returns:

true if the listener was successfully unregistered