Examples with UberPage org.sirix.page.UberPage used on opensource projects

Example 6 with UberPage

use of org.sirix.page.UberPage in project sirix by sirixdb.

the class XdmNodeWriterTrxImpl method rollback.

@Override
public XdmNodeWriteTrx rollback() {
    acquireLock();
    try {
        mNodeReader.assertNotClosed();
        // Reset modification counter.
        mModificationCount = 0L;
        // Close current page transaction.
        final long trxID = getId();
        final int revision = getRevisionNumber();
        final int revNumber = getPageTransaction().getUberPage().isBootstrap() ? 0 : revision - 1;
        final UberPage uberPage = getPageTransaction().rollback();
        // Remember succesfully committed uber page in resource manager.
        mNodeReader.mResourceManager.setLastCommittedUberPage(uberPage);
        mNodeReader.getPageTransaction().clearCaches();
        mNodeReader.getPageTransaction().closeCaches();
        mNodeReader.mResourceManager.closeNodePageWriteTransaction(getId());
        mNodeReader.setPageReadTransaction(null);
        removeCommitFile();
        final PageWriteTrx<Long, Record, UnorderedKeyValuePage> trx = mNodeReader.mResourceManager.createPageWriteTransaction(trxID, revNumber, revNumber, Abort.YES);
        mNodeReader.setPageReadTransaction(trx);
        mNodeReader.mResourceManager.setNodePageWriteTransaction(getId(), trx);
        mNodeFactory = null;
        mNodeFactory = new NodeFactoryImpl(trx);
        reInstantiateIndexes();
        return this;
    } finally {
        unLock();
    }
}

Example 7 with UberPage

use of org.sirix.page.UberPage in project sirix by sirixdb.

the class PageWriteTrxImpl method rollback.

@Override
public UberPage rollback() {
    mPageRtx.assertNotClosed();
    mLog.clear();
    mLog.close();
    mLog = createTrxIntentLog(mPageRtx.mResourceManager);
    final UberPage lastUberPage = (UberPage) mPageWriter.read(mPageWriter.readUberPageReference(), mPageRtx);
    return lastUberPage;
}

Example 8 with UberPage

use of org.sirix.page.UberPage in project sirix by sirixdb.

the class PageWriteTrxImpl method commit.

@Override
public UberPage commit() {
    mPageRtx.assertNotClosed();
    mPageRtx.mResourceManager.getCommitLock().lock();
    final Path commitFile = mPageRtx.mResourceManager.commitFile();
    commitFile.toFile().deleteOnExit();
    // Issues with windows that it's not created in the first time?
    while (!Files.exists(commitFile)) {
        try {
            Files.createFile(commitFile);
        } catch (final IOException e) {
            throw new SirixIOException(e);
        }
    }
    // Forcefully flush write-ahead transaction logs to persistent storage.
    if (mPageRtx.mResourceManager.getResourceManagerConfig().dumpLogs()) {
        mLog.toSecondCache();
    }
    final PageReference uberPageReference = new PageReference();
    final UberPage uberPage = getUberPage();
    uberPageReference.setPage(uberPage);
    final int revision = uberPage.getRevisionNumber();
    // Recursively write indirectly referenced pages.
    uberPage.commit(this);
    uberPageReference.setPage(uberPage);
    mPageWriter.writeUberPageReference(uberPageReference);
    uberPageReference.setPage(null);
    final Path indexes = mPageRtx.mResourceConfig.mPath.resolve(ResourceConfiguration.ResourcePaths.INDEXES.getFile() + String.valueOf(revision) + ".xml");
    if (!Files.exists(indexes)) {
        try {
            Files.createFile(indexes);
        } catch (final IOException e) {
            throw new SirixIOException(e);
        }
    }
    try (final OutputStream out = new FileOutputStream(indexes.toFile())) {
        mIndexController.serialize(out);
    } catch (final IOException e) {
        throw new SirixIOException("Index definitions couldn't be serialized!", e);
    }
    mLog.clear();
    mLog.close();
    mLog = createTrxIntentLog(mPageRtx.mResourceManager);
    try {
        Files.delete(commitFile);
    } catch (final IOException e) {
        throw new SirixIOException("Commit file couldn't be deleted!");
    }
    final UberPage commitedUberPage = (UberPage) mPageWriter.read(mPageWriter.readUberPageReference(), mPageRtx);
    mPageRtx.mResourceManager.getCommitLock().unlock();
    return commitedUberPage;
}

Example 9 with UberPage

use of org.sirix.page.UberPage in project sirix by sirixdb.

the class PageWriteTrxImpl method close.

@Override
public void close() {
    if (!mIsClosed) {
        mPageRtx.assertNotClosed();
        final UberPage lastUberPage = (UberPage) mPageWriter.read(mPageWriter.readUberPageReference(), mPageRtx);
        mPageRtx.mResourceManager.setLastCommittedUberPage(lastUberPage);
        mPageRtx.clearCaches();
        mPageRtx.closeCaches();
        closeCaches();
        mPageWriter.close();
        mIsClosed = true;
        final long trxId = mPageRtx.getTrxId();
        if (!mPageRtx.mResourceManager.getXdmNodeReadTrx(trxId).isPresent())
            mPageRtx.mResourceManager.closeWriteTransaction(trxId);
    }
}

Example 10 with UberPage

use of org.sirix.page.UberPage in project sirix by sirixdb.

the class ResourceStore method openResource.

/**
 * Open a resource, that is get an instance of a {@link ResourceManager} in order to read/write
 * from the resource.
 *
 * @param database The database.
 * @param resourceConfig The resource configuration.
 * @param resourceManagerConfig The resource manager configuration.
 * @param bufferManager The buffer manager.
 * @param resourceFile The resource to open.
 * @return A resource manager.
 */
public ResourceManager openResource(@Nonnull final DatabaseImpl database, @Nonnull final ResourceConfiguration resourceConfig, @Nonnull final ResourceManagerConfiguration resourceManagerConfig, @Nonnull final BufferManager bufferManager, @Nonnull final Path resourceFile) {
    checkNotNull(database);
    checkNotNull(resourceConfig);
    return mResourceManagers.computeIfAbsent(resourceFile, k -> {
        final Storage storage = StorageType.getStorage(resourceConfig);
        final UberPage uberPage;
        if (storage.exists()) {
            try (final Reader reader = storage.createReader()) {
                final PageReference firstRef = reader.readUberPageReference();
                if (firstRef.getPage() == null) {
                    uberPage = (UberPage) reader.read(firstRef, null);
                } else {
                    uberPage = (UberPage) firstRef.getPage();
                }
            }
        } else {
            // Bootstrap uber page and make sure there already is a root node.
            uberPage = new UberPage();
        }
        final ResourceManager resourceManager = new XdmResourceManager(database, this, resourceConfig, resourceManagerConfig, bufferManager, StorageType.getStorage(resourceConfig), uberPage, mReadSemaphore, mWriteSempahore);
        Databases.putResourceManager(resourceFile, resourceManager);
        return resourceManager;
    });
}