Examples with Extractor org.semanticdesktop.aperture.extractor.Extractor used on opensource projects

Example 1 with Extractor

use of org.semanticdesktop.aperture.extractor.Extractor in project stanbol by apache.

the class MetaxaCore method extract.

/**
 * Returns a model containing all the metadata that could be extracted
 * by reading the given input stream using the given MIME type.
 *
 * @param in
 *            an {@link InputStream} where to read the document from
 * @param docId
 *            a {@link String} with the document URI
 * @param mimeType
 *            a {@link String} with the MIME type
 * @return a {@link Model} containing the metadata or {@code null} if no
 *         extractor is available for the given MIME type
 * @throws ExtractorException
 *             if there is an error when extracting the metadata
 * @throws IOException
 *             if there is an error when reading the input stream
 */
public Model extract(InputStream in, URIImpl docId, String mimeType) throws ExtractorException, IOException {
    @SuppressWarnings("rawtypes") Set factories = this.extractorRegistry.getExtractorFactories(mimeType);
    Model result = null;
    if (factories != null && !factories.isEmpty()) {
        // get extractor from the first available factory
        ExtractorFactory factory = (ExtractorFactory) factories.iterator().next();
        Extractor extractor = factory.get();
        RDFContainerFactory containerFactory = new RDFContainerFactoryImpl();
        RDFContainer container = containerFactory.getRDFContainer(docId);
        extractor.extract(container.getDescribedUri(), new BufferedInputStream(in, 8192), null, mimeType, container);
        in.close();
        result = container.getModel();
    }
    return result;
}