package won.protocol.repository.rdfstorage;

import org.apache.jena.query.Dataset;
import org.apache.jena.rdf.model.Model;
import won.protocol.model.DataWithEtag;

import java.net.URI;

/**
 * Created with IntelliJ IDEA.
 * User: gabriel
 * Date: 15.02.13
 * Time: 11:22
 * To change this template use File | Settings | File Templates.
 */
public interface RDFStorageService
{


  /**
   * Stores a copy of the specified model, iff it contains at least one triple.
   * The model is stored as the default model of a dataset.
   *
   * @param resourceURI
   * @param model
   */
  public void storeModel(URI resourceURI, Model model);

  /**
   * Stores a copy of the specified dataset.
   *
   * @param resourceURI
   * @param dataset
   */
  public void storeDataset(URI resourceURI, Dataset dataset);

  /**
   * Loads the default model of the stored dataset with the specified URL
   *
   * @param resourceURI
   * @return
   */
  public Model loadModel(URI resourceURI);

  /**
   * Compares the etag to the value derived from the data found in the storage for the specified URI.
   * Loads the model if the values differ, returns null
   * @param resourceURI
   * @param etag
   * @return
   */
  public DataWithEtag<Model> loadModel(URI resourceURI, String etag);

  /**
   * Loads the dataset with the specified URL
   * @param resourceURI
   * @return
   */
  public Dataset loadDataset(URI resourceURI);

  /**
   * Compares the etag to the value derived from the data found in the storage for the specified URI.
   * Loads the model if the values differ, returns null
   * @param resourceURI
   * @param etag
   * @return
   */
  public DataWithEtag<Dataset> loadDataset(URI resourceURI, String etag);



  public boolean removeContent(URI resourceURI);
}