Example usage for org.apache.hadoop.fs Path isRoot

Introduction

In this page you can find the example usage for org.apache.hadoop.fs Path isRoot.

Prototype

public boolean isRoot() 

Source Link

Document

Returns true if and only if this path represents the root of a file system.

Usage

From source file:com.facebook.presto.hive.metastore.file.FileHiveMetastore.java

License:Apache License

private static boolean isChildDirectory(Path parentDirectory, Path childDirectory) {
    if (parentDirectory.equals(childDirectory)) {
        return true;
    }//from  w  w  w.j  ava2  s  .c  om
    if (childDirectory.isRoot()) {
        return false;
    }
    return isChildDirectory(parentDirectory, childDirectory.getParent());
}

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From source file:gobblin.source.extractor.extract.google.GoogleDriveFileSystem.java

License:Apache License

/**
 * org.apache.hadoop.fs.Path assumes that there separator in file system naming and "/" is the separator.
 * When org.apache.hadoop.fs.Path sees "/" in path String, it splits into parent and name. As fileID is a random
 * String determined by Google and it can contain "/" itself, this method check if parent and name is separated and
 * restore "/" back to file ID./*from  w ww.j a v a2 s.  c  o m*/
 *
 * @param p
 * @return
 */
public static String toFileId(Path p) {
    if (p.isRoot()) {
        return "";
    }
    final String format = "%s" + Path.SEPARATOR + "%s";
    if (p.getParent() != null && StringUtils.isEmpty(p.getParent().getName())) {
        return p.getName();
    }
    return String.format(format, toFileId(p.getParent()), p.getName());
}

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From source file:org.apache.gobblin.util.PathUtils.java

License:Apache License

/**
 * Returns the root path for the specified path.
 *
 * @see Path//from  w ww.j a  va  2 s. c  om
 */
public static Path getRootPath(Path path) {
    if (path.isRoot()) {
        return path;
    }
    return getRootPath(path.getParent());
}

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From source file:org.apache.impala.common.FileSystemUtil.java

License:Apache License

/**
 * Returns true if Path 'p' is a descendant of Path 'parent', false otherwise.
 * This function relies on Path.equals() which requires paths to have the same
 * schema and authority to compare equal. So both 'p' and 'parent' should either
 * be qualified or unqualified paths for this function to behave as expected.
 *///from  w  ww .j a  v a2 s. co m
public static boolean isDescendantPath(Path p, Path parent) {
    if (p == null || parent == null)
        return false;
    while (!p.isRoot() && p.depth() != parent.depth())
        p = p.getParent();
    if (p.isRoot())
        return false;
    boolean result = p.equals(parent);
    if (!result && LOG.isTraceEnabled()) {
        // Add a message to the log if 'p' and 'parent' have inconsistent qualification.
        URI pUri = p.toUri();
        URI parentUri = parent.toUri();
        boolean sameScheme = Objects.equal(pUri.getScheme(), parentUri.getScheme());
        boolean sameAuthority = Objects.equal(pUri.getAuthority(), parentUri.getAuthority());
        if (!sameScheme || !sameAuthority) {
            LOG.trace("Inconsistent schema or authority for paths: " + p.toString() + " " + parent.toString());
        }
    }
    return result;
}

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From source file:org.apache.slider.test.ContractTestUtils.java

License:Apache License

/**
 * Block any operation on the root path. This is a safety check
 * @param path path in the filesystem/* w w  w.j a v a  2 s . c o m*/
 * @param allowRootOperation can the root directory be manipulated?
 * @throws IOException if the operation was rejected
 */
public static void rejectRootOperation(Path path, boolean allowRootOperation) throws IOException {
    if (path.isRoot() && !allowRootOperation) {
        throw new IOException("Root directory operation rejected: " + path);
    }
}

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From source file:org.datacleaner.windows.HdfsUrlChooser.java

License:Open Source License

private Path getRoot() {
    Path path = getCurrentDirectory();
    while (!path.isRoot()) {
        path = path.getParent();//from   w w w. j  ava2s. com
    }

    return path;
}

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From source file:org.shaf.server.controller.ActionFsController.java

License:Apache License

/**
 * Shows all directories and files defined under the specified directory.
 * //www.j  a  v  a2 s.c o  m
 * @param path
 *            the base directory for listing content.
 * @return the view model.
 * @throws Exception
 *             is the view constructing has failed.
 */
@RequestMapping(value = "/dir/{path}", method = RequestMethod.GET)
public ModelAndView onDir(@PathVariable String path) throws Exception {
    LOG.debug("CALL: /fs/action/dir/{" + UriUtils.decodeArguments(path) + "}");

    Path location = new Path(UriUtils.decodeArguments(path));
    String current = location.toString();
    String parent = location.isRoot() ? null : location.getParent().toString();

    TextMatrix content = OPER.getDirContent(current);

    return ViewFileSystem.getDirView().addCurrentPath(current).addParentPath(parent).addDirContent(content)
            .info(super.getListDescription(content, "entity"));
}

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From source file:org.shaf.server.controller.ActionFsController.java

License:Apache License

/**
 * Shows a content of the specified file.
 * //  w w  w .  j av a  2  s.c o  m
 * @param path
 *            the path to the file which content needs to be shown.
 * @return the view model.
 * @throws Exception
 *             is the view constructing has failed.
 */
@RequestMapping(value = "/file/{path}", method = RequestMethod.GET)
public ModelAndView onFile(@PathVariable String path) throws Exception {
    LOG.debug("CALL: /fs/action/file/{" + UriUtils.decodeArguments(path) + "}");

    Path location = new Path(UriUtils.decodeArguments(path));
    String current = location.toString();
    String parent = location.isRoot() ? null : location.getParent().toString();

    return ViewFileSystem.getFileView().addCurrentPath(current).addParentPath(parent)
            .addFileContent(OPER.getFileContent(current)).info("The file content.");
}

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