org.openrdf.repository.manager
Class RepositoryManager

java.lang.Object
  org.openrdf.repository.manager.RepositoryManager

Direct Known Subclasses:

LocalRepositoryManager, RemoteRepositoryManager

public abstract class RepositoryManager
extends Object

A manager for Repositorys. Every RepositoryManager has one SYSTEM repository and zero or more "user repositories". The SYSTEM repository contains data that describes the configuration of the other repositories (their IDs, which implementations of the Repository API to use, access rights, etc.). The other repositories are instantiated based on this configuration data.

Author:

Arjohn Kampman

Field Summary

protected Logger

logger

Constructor Summary

RepositoryManager()
Creates a new RepositoryManager that operates on the specfified base directory.

Method Summary

void	addRepositoryConfig(RepositoryConfig config) Adds or updates the configuration of a repository to the manager's system repository.
protected abstract void	cleanUpRepository(String repositoryID) Clean up a removed repository.
protected abstract Repository	createRepository(String id) Creates and initializes the repository with the specified ID.
protected abstract Repository	createSystemRepository()
Collection<Repository>	getAllRepositories() Returns all configured repositories.
Collection<RepositoryInfo>	getAllRepositoryInfos()
abstract Collection<RepositoryInfo>	getAllRepositoryInfos(boolean skipSystemRepo)
Collection<RepositoryInfo>	getAllUserRepositoryInfos()
Collection<Repository>	getInitializedRepositories() Returns all inititalized repositories.
Repository	getRepository(String id) Gets the repository that is known by the specified ID from this manager.
RepositoryConfig	getRepositoryConfig(String repositoryID)
Set<String>	getRepositoryIDs()
abstract RepositoryInfo	getRepositoryInfo(String id) Gets the repository that is known by the specified ID from this manager.
Repository	getSystemRepository() Gets the SYSTEM repository.
boolean	hasRepositoryConfig(String repositoryID)
void	initialize() Initializes the repository manager.
void	refresh() Shuts down all initialized user repositories.
boolean	removeRepositoryConfig(String repositoryID) Removes the configuration for the specified repository from the manager's system repository if such a configuration is present.
void	shutDown() Shuts down all initialized repositories, including the SYSTEM repository.

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected final Logger logger

Constructor Detail

RepositoryManager

public RepositoryManager()

Creates a new RepositoryManager that operates on the specfified base directory.

Parameters:

baseDir - The base directory where data for repositories can be stored, among other things.

Method Detail

initialize

public void initialize()
                throws RepositoryException

Initializes the repository manager.

Throws:

RepositoryException - If the manager failed to initialize the SYSTEM repository.

createSystemRepository

protected abstract Repository createSystemRepository()
                                              throws RepositoryException

Throws:

RepositoryException

getSystemRepository

public Repository getSystemRepository()

Gets the SYSTEM repository.

getRepositoryIDs

public Set<String> getRepositoryIDs()
                             throws RepositoryException

Throws:

RepositoryException

hasRepositoryConfig

public boolean hasRepositoryConfig(String repositoryID)
                            throws RepositoryException,
                                   RepositoryConfigException

Throws:

RepositoryException

RepositoryConfigException

getRepositoryConfig

public RepositoryConfig getRepositoryConfig(String repositoryID)
                                     throws RepositoryConfigException,
                                            RepositoryException

Throws:

RepositoryConfigException

RepositoryException

addRepositoryConfig

public void addRepositoryConfig(RepositoryConfig config)
                         throws RepositoryException,
                                RepositoryConfigException

Adds or updates the configuration of a repository to the manager's system repository. The system repository may already contain a configuration for a repository with the same ID as specified by config, in which case all previous configuration data for that repository will be cleared before the new configuration is added.

Parameters:

config - The repository configuration that should be added to or updated in the system repository.

Throws:

RepositoryException - If the manager failed to update it's system repository.

RepositoryConfigException - If the manager doesn't know how to update a configuration due to inconsistent configuration data in the system repository. For example, this happens when there are multiple existing configurations with the concerning ID.

removeRepositoryConfig

public boolean removeRepositoryConfig(String repositoryID)
                               throws RepositoryException,
                                      RepositoryConfigException

Removes the configuration for the specified repository from the manager's system repository if such a configuration is present. Returns true if the system repository actually contained the specified repository configuration.

Parameters:

repositoryID - The ID of the repository whose configuration needs to be removed.

Throws:

RepositoryException - If the manager failed to update it's system repository.

RepositoryConfigException - If the manager doesn't know how to remove a configuration due to inconsistent configuration data in the system repository. For example, this happens when there are multiple existing configurations with the concerning ID.

getRepository

public Repository getRepository(String id)
                         throws RepositoryConfigException,
                                RepositoryException

Gets the repository that is known by the specified ID from this manager.

Parameters:

id - A repository ID.

Returns:

A Repository object, or null if no repository was known for the specified ID.

Throws:

RepositoryConfigException - If no repository could be created due to invalid or incomplete configuration data.

RepositoryException

getInitializedRepositories

public Collection<Repository> getInitializedRepositories()

Returns all inititalized repositories. This method returns fast as no lazy creation of repositories takes place.

Returns:

An unmodifiable collection containing the initialized repositories.

See Also:

getAllRepositories()

getAllRepositories

public Collection<Repository> getAllRepositories()
                                          throws RepositoryConfigException,
                                                 RepositoryException

Returns all configured repositories. This may be an expensive operation as it initializes repositories that have not been initialized yet.

Returns:

The Set of all Repositories defined in the SystemRepository.

Throws:

RepositoryConfigException

RepositoryException

See Also:

getInitializedRepositories()

createRepository

protected abstract Repository createRepository(String id)
                                        throws RepositoryConfigException,
                                               RepositoryException

Creates and initializes the repository with the specified ID.

Parameters:

id - A repository ID.

Returns:

The created repository, or null if no such repository exists.

Throws:

RepositoryConfigException - If no repository could be created due to invalid or incomplete configuration data.

RepositoryException

getRepositoryInfo

public abstract RepositoryInfo getRepositoryInfo(String id)
                                          throws RepositoryException

Gets the repository that is known by the specified ID from this manager.

Parameters:

id - A repository ID.

Returns:

A Repository object, or null if no repository was known for the specified ID.

Throws:

RepositoryException - When not able to retrieve existing configurations

getAllRepositoryInfos

public Collection<RepositoryInfo> getAllRepositoryInfos()
                                                 throws RepositoryException

Throws:

RepositoryException

getAllUserRepositoryInfos

public Collection<RepositoryInfo> getAllUserRepositoryInfos()
                                                     throws RepositoryException

Throws:

RepositoryException

getAllRepositoryInfos

public abstract Collection<RepositoryInfo> getAllRepositoryInfos(boolean skipSystemRepo)
                                                          throws RepositoryException

Parameters:

skipSystemRepo -

Throws:

RepositoryException - When not able to retrieve existing configurations

refresh

public void refresh()

Shuts down all initialized user repositories.

See Also:

shutDown()

shutDown

public void shutDown()

Shuts down all initialized repositories, including the SYSTEM repository.

See Also:

refresh()

cleanUpRepository

protected abstract void cleanUpRepository(String repositoryID)
                                   throws IOException

Clean up a removed repository. Note that the configuration for this repository is no longer present in the system repository.

Parameters:

repositoryID - the ID of the repository to clean up

Throws:

IOException