org.openrdf.repository.dataset

Class DatasetRepository

java.lang.Object

org.openrdf.repository.base.RepositoryWrapper

org.openrdf.repository.dataset.DatasetRepository

All Implemented Interfaces:

DelegatingRepository, Repository

public class DatasetRepository
extends RepositoryWrapper

A repository that automatically attempts to load the dataset supplied in a (SPARQL) query (using FROM and FROM NAMED clauses).

Author:

Arjohn Kampman, Jeen Broekstra

Constructor Summary

Constructors

Constructor and Description
DatasetRepository()
DatasetRepository(SailRepository delegate)

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.
SailRepository	getDelegate()
void	loadDataset(URL url, URI context, ParserConfig config) Inspects if the dataset at the supplied URL location has been modified since the last load into this repository and if so loads it into the supplied context.
void	setDelegate(Repository delegate)

Methods inherited from class org.openrdf.repository.base.RepositoryWrapper

getDataDir, getValueFactory, initialize, isInitialized, isWritable, setDataDir, shutDown, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

DatasetRepository

public DatasetRepository()

DatasetRepository

public DatasetRepository(SailRepository delegate)

Method Detail

setDelegate

public void setDelegate(Repository delegate)

Specified by:

setDelegate in interface DelegatingRepository

Overrides:

setDelegate in class RepositoryWrapper

getDelegate

public SailRepository getDelegate()

Specified by:

getDelegate in interface DelegatingRepository

Overrides:

getDelegate in class RepositoryWrapper

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-finally-block as follows:

 Connection con = repository.getConnection();
 try {
        // perform operations on the connection
 }
 finally {
        con.close();
 }
 

Note that RepositoryConnection is not guaranteed to be thread-safe! The recommended pattern for repository access in a multithreaded 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

Overrides:

getConnection in class RepositoryWrapper

Returns:

A connection that allows operations on this repository.

Throws:

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

loadDataset

public void loadDataset(URL url,
                        URI context,
                        ParserConfig config)
                 throws RepositoryException

Inspects if the dataset at the supplied URL location has been modified since the last load into this repository and if so loads it into the supplied context.

Parameters:

url - the location of the dataset

context - the context in which to load the dataset

config - parser configuration to use for processing the dataset

Throws:

RepositoryException - if an error occurred while loading the dataset.