Examples with LuceneSearcher gate.creole.annic.lucene.LuceneSearcher used on opensource projects

Example 1 with LuceneSearcher

use of gate.creole.annic.lucene.LuceneSearcher in project gate-core by GateNLP.

the class LuceneDataStoreImpl method open.

// close()
/**
 * Open a connection to the data store.
 */
@Override
public void open() throws PersistenceException {
    super.open();
    /*
     * check if the storage directory is a valid serial datastore if we
     * want to support old style: String versionInVersionFile = "1.0";
     * (but this means it will open *any* directory)
     */
    BufferedReader isr = null;
    try {
        isr = new BufferedReader(new FileReader(getVersionFile()));
        currentProtocolVersion = isr.readLine();
        String indexDirRelativePath = isr.readLine();
        if (indexDirRelativePath != null && indexDirRelativePath.trim().length() > 1) {
            URL storageDirURL = storageDir.toURI().toURL();
            URL theIndexURL = new URL(storageDirURL, indexDirRelativePath);
            // check if index directory exists
            File indexDir = Files.fileFromURL(theIndexURL);
            if (!indexDir.exists()) {
                throw new PersistenceException("Index directory " + indexDirRelativePath + " could not be found for datastore at " + storageDirURL);
            }
            indexURL = theIndexURL;
            this.indexer = new LuceneIndexer(indexURL);
            this.searcher = new LuceneSearcher();
            ((LuceneSearcher) this.searcher).setLuceneDatastore(this);
        }
    } catch (IOException e) {
        throw new PersistenceException("Invalid storage directory: " + e);
    } finally {
        IOUtils.closeQuietly(isr);
    }
    if (!isValidProtocolVersion(currentProtocolVersion))
        throw new PersistenceException("Invalid protocol version number: " + currentProtocolVersion);
    // Lets create a separate indexer thread which keeps running in the
    // background
    executor = new ScheduledThreadPoolExecutor(1, Executors.defaultThreadFactory());
    // set up the executor so it does not execute delayed indexing tasks
    // that are still waiting when it is shut down. We run these tasks
    // immediately at shutdown time rather than waiting.
    executor.setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
    executor.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
    // start listening to Creole events
    Gate.getCreoleRegister().addCreoleListener(this);
}

Example 2 with LuceneSearcher

use of gate.creole.annic.lucene.LuceneSearcher in project gate-core by GateNLP.

the class TestAnnic method testSearcher.

/**
 * Testing annic searching functionalities.
 *
 * @throws Exception
 */
public void testSearcher() throws Exception {
    LuceneSearcher searcher = new LuceneSearcher();
    Map<String, Object> parameters = new HashMap<String, Object>();
    List<String> indexLocations = new ArrayList<String>();
    indexLocations.add(indexURL.getAbsolutePath());
    parameters.put(Constants.INDEX_LOCATIONS, indexLocations);
    parameters.put(Constants.CONTEXT_WINDOW, new Integer(5));
    String query = "{Person}";
    @SuppressWarnings("unused") boolean success = searcher.search(query, parameters);
    int noOfHits = searcher.next(-1).length;
    assertEquals(12, noOfHits);
    query = "{Organization}({Token})*3{Person}";
    success = searcher.search(query, parameters);
    noOfHits = searcher.next(-1).length;
    assertEquals(noOfHits, 0);
    query = "{Organization}({Token})*3 (\"up\" | \"down\") ({Token})*3 ({Money} | {Percent})";
    success = searcher.search(query, parameters);
    Hit[] toExport = searcher.next(-1);
    assertEquals(toExport.length, 0);
    String xmlRepresentation = Parser.toXML(toExport);
    // and then read it back
    toExport = Parser.fromXML(xmlRepresentation);
    xmlRepresentation = Parser.toXML(toExport);
}