Persistence.java
/*
* *********************************************************************************************************************
*
* blueMarine II: Semantic Media Centre
* http://tidalwave.it/projects/bluemarine2
*
* Copyright (C) 2015 - 2021 by Tidalwave s.a.s. (http://tidalwave.it)
*
* *********************************************************************************************************************
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*
* *********************************************************************************************************************
*
* git clone https://bitbucket.org/tidalwave/bluemarine2-src
* git clone https://github.com/tidalwave-it/bluemarine2-src
*
* *********************************************************************************************************************
*/
package it.tidalwave.bluemarine2.persistence;
import javax.annotation.Nonnull;
import java.io.IOException;
import java.nio.file.Path;
import org.eclipse.rdf4j.repository.Repository;
import org.eclipse.rdf4j.repository.RepositoryConnection;
import org.eclipse.rdf4j.repository.RepositoryException;
import org.eclipse.rdf4j.rio.RDFHandlerException;
/***********************************************************************************************************************
*
* This interface should not exist. For storing data into Persistence we're firing events to the messageBus. Why instead
* we retrieve data by directly accessing the repository? Perhaps we could switch to a coherently sync model for
* Persistence. In this case, AddStatementsRequest should me a private affair of DefaultMediaScanner.
*
* @author Fabrizio Giudici
*
**********************************************************************************************************************/
public interface Persistence
{
public static final Class<Persistence> _Persistence_ = Persistence.class;
public static interface TransactionalTask<E extends Exception>
{
public void run (@Nonnull RepositoryConnection connection)
throws E, RepositoryException;
}
@Nonnull
public Repository getRepository();
public <E extends Exception> void runInTransaction (@Nonnull TransactionalTask<E> task)
throws E, RepositoryException;
public void exportToFile (@Nonnull final Path path)
throws RDFHandlerException, IOException, RepositoryException;
}