Example usage for org.apache.lucene.store RAMDirectory sizeInBytes

Introduction

In this page you can find the example usage for org.apache.lucene.store RAMDirectory sizeInBytes.

Prototype

AtomicLong sizeInBytes

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Usage

From source file:org.xcmis.search.lucene.index.InMemoryIndexDataKeeperFactory.java

License:Open Source License

/**
 * {@inheritDoc}//from ww w .  j  a v  a 2 s  .  co m
 */

public LuceneIndexDataManager merge(final Collection<LuceneIndexDataManager> chains) throws IndexException {
    final List<TransactionLog> transactionsLogs = new ArrayList<TransactionLog>();
    final List<Directory> mergeDirectorys = new ArrayList<Directory>();
    final Map<String, Document> documentsBuffer = new HashMap<String, Document>();
    final Map<String, Document> pendingBuffer = new HashMap<String, Document>();

    for (final IndexDataKeeper<Document> indexDataKeeper : chains) {
        final ReducibleInMemoryIndexDataKeeper reducibleInMemoryIndexDataKeeper = (ReducibleInMemoryIndexDataKeeper) indexDataKeeper;

        if (reducibleInMemoryIndexDataKeeper.getDocumentCount() > 0) {

            final RAMDirectory directory = (RAMDirectory) reducibleInMemoryIndexDataKeeper.getDirectory();
            if (directory.sizeInBytes() > 0) {
                mergeDirectorys.add(directory);
            }
            pendingBuffer.putAll(reducibleInMemoryIndexDataKeeper.getPendingDocumentsBuffer());
            documentsBuffer.putAll(reducibleInMemoryIndexDataKeeper.getDocumentsBuffer());
            transactionsLogs.add(reducibleInMemoryIndexDataKeeper.getTransactionLog());
        }
    }
    LuceneIndexDataManager reducibleInMemoryIndexDataKeeper = null;
    try {
        RAMDirectory newDirectory = null;

        if (mergeDirectorys.size() > 0) {

            newDirectory = new RAMDirectory();
            final IndexWriter newWriter = new IndexWriter(newDirectory, new StandardAnalyzer(),
                    MaxFieldLength.UNLIMITED);
            final Directory[] dirsToMerge = new Directory[mergeDirectorys.size()];
            newWriter.addIndexesNoOptimize(mergeDirectorys.toArray(dirsToMerge));
            newWriter.optimize();
            newWriter.close();

            //
        } else {
            newDirectory = new RAMDirectory();
        }
        reducibleInMemoryIndexDataKeeper = new ReducibleInMemoryIndexDataKeeper(newDirectory, documentsBuffer,
                pendingBuffer, new CompositeTransactionLog(transactionsLogs));

    } catch (final IOException e) {
        throw new IndexException(e.getLocalizedMessage(), e);
    } catch (final TransactionLogException e) {
        throw new IndexException(e.getLocalizedMessage(), e);
    }

    return reducibleInMemoryIndexDataKeeper;
}

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