Example usage for org.apache.commons.vfs.cache NullFilesCache NullFilesCache

Introduction

In this page you can find the example usage for org.apache.commons.vfs.cache NullFilesCache NullFilesCache.

Prototype

NullFilesCache

Source Link

Usage

From source file:com.bedatadriven.renjin.appengine.AppEngineContextFactory.java

@VisibleForTesting
static FileSystemManager createFileSystemManager(LocalFileProvider localFileProvider)
        throws FileSystemException {
    try {//from   w  w w .j av a2s.  co  m
        JarFileProvider jarFileProvider = new AppEngineJarFileProvider();

        // this provides a fake local file system rooted in the servlet context root.
        // this is necessary because on the actual appengine platform, any queries to the ancestors
        // of the servlet context (e.g. /base) will throw a security exception

        DefaultFileSystemManager dfsm = new DefaultFileSystemManager();
        dfsm.addProvider("jar", jarFileProvider);
        dfsm.addProvider("file", localFileProvider);
        dfsm.addExtensionMap("jar", "jar");
        dfsm.setDefaultProvider(new UrlFileProvider());
        dfsm.setFilesCache(new NullFilesCache());
        dfsm.setCacheStrategy(CacheStrategy.ON_RESOLVE);
        dfsm.setBaseFile(new File("/"));
        dfsm.init();

        return dfsm;
    } catch (FileSystemException e) {
        LOG.log(Level.SEVERE, "Failed to initialize file system for development server", e);
        throw new RuntimeException(e);
    }
}

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From source file:org.objectweb.proactive.extensions.dataspaces.vfs.VFSFactory.java

/**
 * Creates new DefaultSystemManager instance with configured providers, replicator, temporary
 * storage - as described in class description, and <strong>DISABLED files cache</strong>
 * (NullFilesCache) .//from   www.  j a  va2  s  . c om
 * <p>
 * Returned instance is initialized and it is a caller responsibility to close it to release
 * resources.
 *
 * @param enableFilesCache
 *            when <code>true</code> DefaultFilesCache is configured for returned manager; when
 *            <code>false</code> file caching is disabled - NullFilesCache is configured
 * @return configured and initialized DefaultFileSystemManager instance
 * @throws FileSystemException
 *             when initialization or configuration process fails
 */
public static DefaultFileSystemManager createDefaultFileSystemManager(boolean enableFilesCache)
        throws FileSystemException {
    logger.debug("Creating new VFS manager");

    FileSystemOptions opts = createDefaultFileSystemOptions();
    final DefaultFileSystemManager manager = new DefaultOptionsFileSystemManager(opts);
    manager.setLogger(logger);

    final DefaultFileReplicator replicator = new DefaultFileReplicator();
    manager.setReplicator(new PrivilegedFileReplicator(replicator));
    manager.setTemporaryFileStore(replicator);
    if (!enableFilesCache) {
        // WISH: one beautiful day one may try to use FilesCache aware of AO instead of NullFilesCache
        manager.setFilesCache(new NullFilesCache());
    }

    manager.addProvider("file", new DefaultLocalFileProvider());
    manager.addProvider("http", new HttpFileProvider());
    manager.addProvider("https", new HttpsFileProvider());
    manager.addProvider("ftp", new FtpFileProvider());
    manager.addProvider("sftp", new SftpFileProvider());
    final ProActiveFileProvider proactiveProvider = new ProActiveFileProvider();
    for (final String scheme : ProActiveFileName.getAllVFSSchemes()) {
        manager.addProvider(scheme, proactiveProvider);
    }

    manager.addProvider("s3", new S3FileProvider());
    manager.addOperationProvider("s3", new AclOperationsProvider());

    manager.setDefaultProvider(new UrlFileProvider());

    manager.init();
    logger.debug("Created and initialized new VFS manager");
    return manager;
}

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