Examples with IndexWriter org.apache.lucene.index.IndexWriter used on opensource projects

Example 61 with IndexWriter

use of org.apache.lucene.index.IndexWriter in project languagetool by languagetool-org.

the class PatternRuleQueryBuilderTest method setUp.

@Override
public void setUp() throws Exception {
    super.setUp();
    language = new English();
    directory = new RAMDirectory();
    /*File indexPath = new File("/tmp/lucene");
    if (indexPath.exists()) {
      FileUtils.deleteDirectory(indexPath);
    }
    directory = FSDirectory.open(indexPath);*/
    Analyzer analyzer = Indexer.getAnalyzer(language);
    IndexWriterConfig config = Indexer.getIndexWriterConfig(analyzer);
    try (IndexWriter writer = new IndexWriter(directory, config)) {
        addDocument(writer, "How do you thin about this wonderful idea?");
        addDocument(writer, "The are several grammar checkers for English, E.G. LanguageTool 123.");
    }
    reader = DirectoryReader.open(directory);
    searcher = newSearcher(reader);
}

Example 62 with IndexWriter

use of org.apache.lucene.index.IndexWriter in project neo4j by neo4j.

the class LuceneSchemaIndex method markAsOnline.

/**
     * Marks index as online by including "status" -> "online" map into commit metadata of the first partition.
     *
     * @throws IOException
     */
public void markAsOnline() throws IOException {
    ensureOpen();
    AbstractIndexPartition partition = getFirstPartition(getPartitions());
    IndexWriter indexWriter = partition.getIndexWriter();
    indexWriter.setCommitData(ONLINE_COMMIT_USER_DATA);
    flush(false);
}

Example 63 with IndexWriter

use of org.apache.lucene.index.IndexWriter in project neo4j by neo4j.

the class WritableIndexReferenceFactory method refresh.

/**
     * If nothing has changed underneath (since the searcher was last created
     * or refreshed) {@code searcher} is returned. But if something has changed a
     * refreshed searcher is returned. It makes use if the
     * {@link DirectoryReader#openIfChanged(DirectoryReader, IndexWriter, boolean)} which faster than opening an index
     * from
     * scratch.
     *
     * @param indexReference the {@link IndexReference} to refresh.
     * @return a refreshed version of the searcher or, if nothing has changed,
     *         {@code null}.
     * @throws RuntimeException if there's a problem with the index.
     */
@Override
IndexReference refresh(IndexReference indexReference) {
    try {
        DirectoryReader reader = (DirectoryReader) indexReference.getSearcher().getIndexReader();
        IndexWriter writer = indexReference.getWriter();
        IndexReader reopened = DirectoryReader.openIfChanged(reader, writer);
        if (reopened != null) {
            IndexSearcher newSearcher = newIndexSearcher(indexReference.getIdentifier(), reopened);
            indexReference.detachOrClose();
            return new WritableIndexReference(indexReference.getIdentifier(), newSearcher, writer);
        }
        return indexReference;
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
}

Example 64 with IndexWriter

use of org.apache.lucene.index.IndexWriter in project neo4j by neo4j.

the class AbstractLuceneIndex method flush.

/**
     * Commits all index partitions.
     *
     * @param merge also merge all segments together. This should be done before reading term frequencies.
     * @throws IOException on Lucene I/O error.
     */
public void flush(boolean merge) throws IOException {
    List<AbstractIndexPartition> partitions = getPartitions();
    for (AbstractIndexPartition partition : partitions) {
        IndexWriter writer = partition.getIndexWriter();
        writer.commit();
        if (merge) {
            writer.forceMerge(1);
        }
    }
}

Example 65 with IndexWriter

use of org.apache.lucene.index.IndexWriter in project neo4j by neo4j.

the class LuceneDataSourceTest method testShouldReturnIndexWriterFromLRUCache.

@Test
public void testShouldReturnIndexWriterFromLRUCache() throws Throwable {
    Config config = Config.embeddedDefaults();
    dataSource = life.add(new LuceneDataSource(directory.graphDbDir(), config, indexStore, fileSystemRule.get()));
    IndexIdentifier identifier = identifier("foo");
    IndexWriter writer = dataSource.getIndexSearcher(identifier).getWriter();
    assertSame(writer, dataSource.getIndexSearcher(identifier).getWriter());
}