Example usage for org.apache.hadoop.fs FileContext listStatus

Introduction

In this page you can find the example usage for org.apache.hadoop.fs FileContext listStatus.

Prototype

public RemoteIterator<FileStatus> listStatus(final Path f)
        throws AccessControlException, FileNotFoundException, UnsupportedFileSystemException, IOException 

Source Link

Document

List the statuses of the files/directories in the given path if the path is a directory.

Usage

From source file:co.cask.cdap.common.io.Locations.java

License:Apache License

/**
 * Returns {@link RemoteIterator} of {@link LocationStatus} under a directory
 * represented by the given {@link Location}.
 *///from  w  w  w  . j  av  a  2  s. c o m
private static RemoteIterator<LocationStatus> listLocationStatus(Location location) throws IOException {
    LocationFactory lf = location.getLocationFactory();
    if (lf instanceof HDFSLocationFactory) {
        FileStatus[] fileStatuses = ((HDFSLocationFactory) lf).getFileSystem()
                .listStatus(new Path(location.toURI()));
        return transform(asRemoteIterator(Iterators.forArray(fileStatuses)), FILE_STATUS_TO_LOCATION_STATUS);
    }
    if (lf instanceof FileContextLocationFactory) {
        FileContext fc = ((FileContextLocationFactory) lf).getFileContext();
        return transform(fc.listStatus(new Path(location.toURI())), FILE_STATUS_TO_LOCATION_STATUS);
    }
    return transform(asRemoteIterator(location.list().iterator()), LOCATION_TO_LOCATION_STATUS);
}

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From source file:com.ikanow.aleph2.aleph2_rest_utils.DataStoreCrudService.java

License:Apache License

private static Collection<FileDescriptor> getFolderFilenames(final String folder,
        final FileContext file_context) throws AccessControlException, FileNotFoundException,
        UnsupportedFileSystemException, IllegalArgumentException, IOException {
    Collection<FileDescriptor> file_names = new ArrayList<FileDescriptor>();
    RemoteIterator<FileStatus> file_status = file_context.listStatus(new Path(folder));
    while (file_status.hasNext())
        file_names.add(new FileDescriptor(null, file_status.next().getPath().getName()));
    return file_names;
}

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