Package org.eclipse.rdf4j.repository.sail

Class ProxyRepository

  • All Implemented Interfaces:
    Repository, RepositoryResolverClient
    public class ProxyRepository
extends AbstractRepository
implements RepositoryResolverClient

    Repository implementation that takes a RepositoryResolver instance and the id of a managed repository, and delegate all calls through to the given repository.

    The purpose is to allow Sails to refer to other local repositories using a unique identifier without having to go through an HTTP layer.

    The implementation is independent of DelegatingRepository so that it is freed from having to provide implementation details in its configuration data. Instead, it only has to provide an unambiguous local identifier to the proxy.

    Author:
    Dale Visser

    • Constructor Detail

      • ProxyRepository

        public ProxyRepository()

      • ProxyRepository

        public ProxyRepository​(String proxiedIdentity)
        Creates a repository instance that proxies to a repository of the give ID.
        Parameters:
        proxiedIdentity - id of the proxied repository

      • ProxyRepository

        public ProxyRepository​(RepositoryResolver resolver,
                       String proxiedIdentity)
        Creates a repository instance that proxies to the given repository.
        Parameters:
        resolver - manager that the proxied repository is associated with
        proxiedIdentity - id of the proxied repository

    • Method Detail

      • setProxiedIdentity

        public final void setProxiedIdentity​(String value)

      • getProxiedIdentity

        public String getProxiedIdentity()

      • 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.

      • 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.