org.eclipse.rdf4j.repository.base

Class RepositoryWrapper

java.lang.Object

org.eclipse.rdf4j.repository.base.RepositoryWrapper

All Implemented Interfaces:

DelegatingRepository, Repository

Direct Known Subclasses:

ContextAwareRepository, DatasetRepository, InterceptingRepositoryWrapper, NotifyingRepositoryWrapper

public class RepositoryWrapper
extends Object
implements DelegatingRepository

A DelegatingRepository implementation that, by default, forwards all method calls to its delegate.

Author:

Herko ter Horst, Arjohn Kampman

Constructor Summary

Constructors

Constructor and Description
RepositoryWrapper() Creates a new RepositoryWrapper.
RepositoryWrapper(Repository delegate) Creates a new RepositoryWrapper and calls setDelegate(Repository) with the supplied delegate repository.

Method Summary

Modifier and Type	Method and Description
RepositoryConnection	getConnection() Opens a connection to this repository that can be used for querying and updating the contents of the repository.
File	getDataDir() Get the directory where data and logging for this repository is stored.
Repository	getDelegate()
ValueFactory	getValueFactory() Gets a ValueFactory for this Repository.
void	initialize() Initializes this repository.
boolean	isInitialized() Indicates if the Repository has been initialized.
boolean	isWritable() Checks whether this repository is writable, i.e.
void	setDataDir(File dataDir) Set the directory where data and logging for this repository is stored.
void	setDelegate(Repository delegate)
void	shutDown() Shuts the repository down, releasing any resources that it keeps hold of.
String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.rdf4j.repository.Repository

init

Constructor Detail

RepositoryWrapper

public RepositoryWrapper()

Creates a new RepositoryWrapper.

RepositoryWrapper

public RepositoryWrapper(Repository delegate)

Creates a new RepositoryWrapper and calls setDelegate(Repository) with the supplied delegate repository.

Method Detail

setDelegate

public void setDelegate(Repository delegate)

Specified by:

setDelegate in interface DelegatingRepository

getDelegate

public Repository getDelegate()

Specified by:

getDelegate in interface DelegatingRepository

setDataDir

public void setDataDir(File dataDir)

Description copied from interface: Repository

Set the directory where data and logging for this repository is stored.

Specified by:

setDataDir in interface Repository

Parameters:

dataDir - the directory where data for this repository is stored

getDataDir

public File getDataDir()

Description copied from interface: Repository

Get the directory where data and logging for this repository is stored.

Specified by:

getDataDir in interface Repository

Returns:

the directory where data for this repository is stored.

initialize

public void initialize()
                throws RepositoryException

Description copied from interface: Repository

Initializes this repository.

Specified by:

initialize in interface Repository

Throws:

RepositoryException - If the initialization failed.

shutDown

public void shutDown()
              throws RepositoryException

Description copied from interface: Repository

Shuts the repository down, releasing any resources that it keeps hold of. Once shut down, the repository can no longer be used until it is re-initialized.

Specified by:

shutDown in interface Repository

Throws:

RepositoryException

isWritable

public boolean isWritable()
                   throws RepositoryException

Description copied from interface: Repository

Checks whether this repository is writable, i.e. if the data contained in this repository can be changed. The writability of the repository is determined by the writability of the Sail that this repository operates on.

Specified by:

isWritable in interface Repository

Throws:

RepositoryException

getConnection

public RepositoryConnection getConnection()
                                   throws RepositoryException

Description copied from interface: Repository

Opens a connection to this repository that can be used for querying and updating the contents of the repository. Created connections need to be closed to make sure that any resources they keep hold of are released. The best way to do this is to use a try-with-resources block, as follows:

 try (RepositoryConnection conn = repository.getConnection()) {
        // perform operations on the connection
 }
 

Note that RepositoryConnection is not guaranteed to be thread-safe! The recommended pattern for repository access in a multi-threaded application is to share the Repository object between threads, but have each thread create and use its own RepositoryConnections.

Specified by:

getConnection in interface Repository

Returns:

A connection that allows operations on this repository.

Throws:

RepositoryException - If something went wrong during the creation of the Connection.

getValueFactory

public ValueFactory getValueFactory()

Description copied from interface: Repository

Gets a ValueFactory for this Repository.

Specified by:

getValueFactory in interface Repository

Returns:

A repository-specific ValueFactory.

toString

public String toString()

Overrides:

toString in class Object

isInitialized

public boolean isInitialized()

Description copied from interface: Repository

Indicates if the Repository has been initialized. Note that the initialization status may change if the Repository is shut down.

Specified by:

isInitialized in interface Repository

Returns:

true iff the repository has been initialized.