Examples of java.nio.file.attribute.BasicFileAttributeView

java.nio.file.attribute.BasicFileAttributeView

A file attribute view that provides a view of a basic set of file attributes common to many file systems. The basic set of file attributes consist of mandatory and optional file attributes as defined by the {@link BasicFileAttributes} interface.

The file attributes are retrieved from the file system as a bulk operation by invoking the {@link #readAttributes() readAttributes} method.This class also defines the {@link #setTimes setTimes} method to update thefile's time attributes.

Where dynamic access to file attributes is required, the attributes supported by this attribute view have the following names and types:

Name Type

"lastModifiedTime" {@link FileTime}

"lastAccessTime" {@link FileTime}

"creationTime" {@link FileTime}

"size" {@link Long}

"isRegularFile" {@link Boolean}

"isDirectory" {@link Boolean}

"isSymbolicLink" {@link Boolean}

"isOther" {@link Boolean}

"fileKey" {@link Object}

Name	Type
"lastModifiedTime"	{@link FileTime}
"lastAccessTime"	{@link FileTime}
"creationTime"	{@link FileTime}
"size"	{@link Long}
"isRegularFile"	{@link Boolean}
"isDirectory"	{@link Boolean}
"isSymbolicLink"	{@link Boolean}
"isOther"	{@link Boolean}
"fileKey"	{@link Object}

The {@link java.nio.file.Files#getAttribute getAttribute} method may beused to read any of these attributes as if by invoking the {@link #readAttributes() readAttributes()} method.

The {@link java.nio.file.Files#setAttribute setAttribute} method may beused to update the file's last modified time, last access time or create time attributes as if by invoking the {@link #setTimes setTimes} method. @since 1.7


        private Object[] doUTimes(Path path, double atime, double mtime, boolean nofollow)
            throws NodeOSException
        {
            try {
                BasicFileAttributeView attrView;
                if (nofollow) {
                    attrView = Files.getFileAttributeView(path, BasicFileAttributeView.class,
                                                          LinkOption.NOFOLLOW_LINKS);
                } else {
                    attrView = Files.getFileAttributeView(path, BasicFileAttributeView.class);
                }


                BasicFileAttributes attrs = attrView.readAttributes();
                // The timestamp seems to come from JavaScript as a decimal value of seconds
                FileTime newATime = FileTime.fromMillis((long)(atime * 1000.0));
                FileTime newMTime = FileTime.fromMillis((long)(mtime * 1000.0));
                attrView.setTimes(newMTime, newATime, attrs.creationTime());
            } catch (IOException ioe) {
                throw new NodeOSException(getErrorCode(ioe), ioe, path.toString());
            }
            return new Object[] { Context.getUndefinedValue(), Context.getUndefinedValue() };
        }

View Full Code Here

  @Test
  public void testOpenFileAttributeViewsThrow() throws IOException {
    Path p = fs.getPath("/foo");
    Files.createFile(p);


    BasicFileAttributeView view = Files.getFileAttributeView(p, BasicFileAttributeView.class);


    fs.close();


    try {
      view.readAttributes();
      fail();
    } catch (ClosedFileSystemException expected) {
    }


    try {
      view.setTimes(null, null, null);
      fail();
    } catch (ClosedFileSystemException expected) {
    }
  }

View Full Code Here

    assertSetFailsOnCreate("lastAccessTime", time);
  }


  @Test
  public void testView() throws IOException {
    BasicFileAttributeView view = provider.view(fileLookup(), NO_INHERITED_VIEWS);


    assertThat(view).isNotNull();
    assertThat(view.name()).isEqualTo("basic");


    BasicFileAttributes attrs = view.readAttributes();
    assertThat(attrs.fileKey()).isEqualTo(0);


    FileTime time = attrs.creationTime();
    assertThat(attrs.lastAccessTime()).isEqualTo(time);
    assertThat(attrs.lastModifiedTime()).isEqualTo(time);


    view.setTimes(null, null, null);


    attrs = view.readAttributes();
    assertThat(attrs.creationTime()).isEqualTo(time);
    assertThat(attrs.lastAccessTime()).isEqualTo(time);
    assertThat(attrs.lastModifiedTime()).isEqualTo(time);


    view.setTimes(FileTime.fromMillis(0L), null, null);


    attrs = view.readAttributes();
    assertThat(attrs.creationTime()).isEqualTo(time);
    assertThat(attrs.lastAccessTime()).isEqualTo(time);
    assertThat(attrs.lastModifiedTime()).isEqualTo(FileTime.fromMillis(0L));
  }

View Full Code Here

    Files.createDirectory(path("/foo/bar"));
    SecureDirectoryStream<Path> stream =
        (SecureDirectoryStream<Path>) Files.newDirectoryStream(path("/foo"));


    Iterator<Path> iter = stream.iterator();
    BasicFileAttributeView view1 = stream.getFileAttributeView(BasicFileAttributeView.class);
    BasicFileAttributeView view2 = stream.getFileAttributeView(
        path("bar"), BasicFileAttributeView.class);


    try {
      stream.iterator();
      fail("expected IllegalStateException");
    } catch (IllegalStateException expected) {
    }


    stream.close();


    try {
      iter.next();
      fail("expected ClosedDirectoryStreamException");
    } catch (ClosedDirectoryStreamException expected) {
    }


    try {
      view1.readAttributes();
      fail("expected ClosedDirectoryStreamException");
    } catch (ClosedDirectoryStreamException expected) {
    }


    try {
      view2.readAttributes();
      fail("expected ClosedDirectoryStreamException");
    } catch (ClosedDirectoryStreamException expected) {
    }


    try {
      view1.setTimes(null, null, null);
      fail("expected ClosedDirectoryStreamException");
    } catch (ClosedDirectoryStreamException expected) {
    }


    try {
      view2.setTimes(null, null, null);
      fail("expected ClosedDirectoryStreamException");
    } catch (ClosedDirectoryStreamException expected) {
    }
  }

View Full Code Here

    /**
     * Prints detailed information for specified file.
     */
    private void listFile(@NotNull final Path path, @NotNull final PrintWriter writer) throws IOException {


        final BasicFileAttributeView view = Files.getFileAttributeView(
                path, BasicFileAttributeView.class);


        final BasicFileAttributes attrs = view.readAttributes();
        final String timeStr = DateUtils.format(attrs.lastModifiedTime());


        // As not all the file systems support POSIX file permissions,
        // we don't try to retrieve them + retrieving such information
        // for each file, can entail performance degradation.

View Full Code Here

TOP

Related Classes of java.nio.file.attribute.BasicFileAttributeView

com.github.hakko.musiccabinet.service.DirectoryBrowserService

com.google.common.jimfs.BasicAttributeProviderTest

com.google.common.jimfs.JimfsFileSystemCloseTest

com.google.common.jimfs.JimfsUnixLikeFileSystemTest

ds.pjftp.main.ServerDTP

io.apigee.trireme.core.modules.AsyncFilesystem$FSImpl

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.