Examples of de.fuberlin.wiwiss.pubby.sources.DataSource

Package de.fuberlin.wiwiss.pubby.sources

Examples of de.fuberlin.wiwiss.pubby.sources.DataSource

de.fuberlin.wiwiss.pubby.sources.DataSource
A source of RDF data intended for publication through the server. TODO: describeResource and getHighXxxdegreeProperties should be combined into a single method with a complex result so that implementations can better mess with the high-degree stuff while keeping responses consistent between methods

  


  private DataSource buildDataSource(Configuration configuration) {
    requireExactlyOneOf(CONF.sparqlEndpoint, CONF.loadRDF);


    DataSource result;
    if (hasProperty(CONF.sparqlEndpoint)) {
      
      // SPARQL data source
      String endpointURL = getIRI(CONF.sparqlEndpoint);
      String defaultGraphURI = getIRI(CONF.sparqlDefaultGraph);

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    dataSource = buildDataSource();


    // Vocabulary data source contains our normal data sources plus
    // the configuration model, so that we can read labels etc from
    // the configuration file
    DataSource vocabularyDataSource = new MergeDataSource(
        new ModelDataSource(getModel()), getDataSource());
    vocabularyStore.setDataSource(vocabularyDataSource);
    vocabularyStore.setDefaultLanguage(getDefaultLanguage());


    // Sanity check to spot typical configuration problem

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  private DataSource buildDataSource() {
    List<DataSource> sources = new ArrayList<DataSource>(datasets.size());
    for (Dataset dataset: datasets) {
      sources.add(dataset.getDataSource());
    }
    DataSource result = new MergeDataSource(sources, prefixes);
    // If we don't have an indexResource, and there is no resource
    // at the home URL in any of the datasets, then add an
    // index builder. It will be responsible for handling the
    // homepage/index resource.
    // TODO: Shouldn't we make the index data source available even if there
    //       is an indexResource?
    String indexIRI = webBase + getWebResourcePrefix();
    if (!hasProperty(CONF.indexResource) && 
        result.describeResource(indexIRI).isEmpty()) {
      result = new IndexDataSource(indexIRI, result);
    }
    return result;
  }

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  /**
   * @return A description of the resource that allows interrogation of the data
   */
  public ResourceDescription getResourceDescription() {
    DataSource source = config.getDataSource();
    Model model = source.describeResource(absoluteIRI);
    if (model.isEmpty()) return null;
    return new ResourceDescription(this, model, 
        source.getHighIndegreeProperties(absoluteIRI), 
        source.getHighOutdegreeProperties(absoluteIRI), 
        config);
  }

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Related Classes of de.fuberlin.wiwiss.pubby.sources.DataSource

de.fuberlin.wiwiss.pubby.Configuration

de.fuberlin.wiwiss.pubby.Dataset

de.fuberlin.wiwiss.pubby.HypermediaControls

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