Example usage for org.apache.commons.vfs2 FileObject exists

Introduction

In this page you can find the example usage for org.apache.commons.vfs2 FileObject exists.

Prototype

boolean exists() throws FileSystemException;

Source Link

Document

Determines if this file exists.

Usage

From source file:org.apache.accumulo.start.classloader.vfs.providers.ReadOnlyHdfsFileProviderTest.java

@Test
public void testGetAttributes() throws Exception {
    FileObject fo = manager.resolveFile(TEST_DIR1);
    Assert.assertNotNull(fo);/*from   ww  w .j av a 2s  .co m*/
    Assert.assertFalse(fo.exists());

    // Create the test file
    FileObject file = createTestFile(hdfs);
    Map<String, Object> attributes = file.getContent().getAttributes();
    Assert.assertTrue(attributes.containsKey(HdfsFileAttributes.BLOCK_SIZE.toString()));
    Assert.assertTrue(attributes.containsKey(HdfsFileAttributes.GROUP.toString()));
    Assert.assertTrue(attributes.containsKey(HdfsFileAttributes.LAST_ACCESS_TIME.toString()));
    Assert.assertTrue(attributes.containsKey(HdfsFileAttributes.LENGTH.toString()));
    Assert.assertTrue(attributes.containsKey(HdfsFileAttributes.MODIFICATION_TIME.toString()));
    Assert.assertTrue(attributes.containsKey(HdfsFileAttributes.OWNER.toString()));
    Assert.assertTrue(attributes.containsKey(HdfsFileAttributes.PERMISSIONS.toString()));
}

From source file:org.apache.accumulo.start.classloader.vfs.providers.ReadOnlyHdfsFileProviderTest.java

@Test(expected = FileSystemException.class)
public void testRandomAccessContent() throws Exception {
    FileObject fo = manager.resolveFile(TEST_DIR1);
    Assert.assertNotNull(fo);/*from  w w w  .j  av a2  s .  c o  m*/
    Assert.assertFalse(fo.exists());

    // Create the test file
    FileObject file = createTestFile(hdfs);
    file.getContent().getRandomAccessContent(RandomAccessMode.READWRITE).close();
}

From source file:org.apache.accumulo.start.classloader.vfs.providers.ReadOnlyHdfsFileProviderTest.java

@Test
public void testRandomAccessContent2() throws Exception {
    FileObject fo = manager.resolveFile(TEST_DIR1);
    Assert.assertNotNull(fo);//from   w w  w .  jav a2s .c  om
    Assert.assertFalse(fo.exists());

    // Create the test file
    FileObject file = createTestFile(hdfs);
    file.getContent().getRandomAccessContent(RandomAccessMode.READ).close();
}

From source file:org.apache.accumulo.start.classloader.vfs.providers.ReadOnlyHdfsFileProviderTest.java

@Test
public void testEquals() throws Exception {
    FileObject fo = manager.resolveFile(TEST_DIR1);
    Assert.assertNotNull(fo);/*from  w w w  .  j  a  v  a  2 s  .c o  m*/
    Assert.assertFalse(fo.exists());

    // Create the test file
    FileObject file = createTestFile(hdfs);
    // Get a handle to the same file
    FileObject file2 = manager.resolveFile(TEST_FILE1);
    Assert.assertEquals(file, file2);
}

From source file:org.apache.commons.vfs2.example.Shell.java

/**
 * Does a 'cp' command.//ww w  .j av a 2s  . c o m
 */
private void cp(final String[] cmd) throws Exception {
    if (cmd.length < 3) {
        throw new Exception("USAGE: cp <src> <dest>");
    }

    final FileObject src = mgr.resolveFile(cwd, cmd[1]);
    FileObject dest = mgr.resolveFile(cwd, cmd[2]);
    if (dest.exists() && dest.getType() == FileType.FOLDER) {
        dest = dest.resolveFile(src.getName().getBaseName());
    }

    dest.copyFrom(src, Selectors.SELECT_ALL);
}

From source file:org.apache.commons.vfs2.example.Shell.java

/**
 * Does a 'cd' command./*  w ww  . java  2s. co m*/
 * If the taget directory does not exist, a message is printed to <code>System.err</code>.
 */
private void cd(final String[] cmd) throws Exception {
    final String path;
    if (cmd.length > 1) {
        path = cmd[1];
    } else {
        path = System.getProperty("user.home");
    }

    // Locate and validate the folder
    final FileObject tmp = mgr.resolveFile(cwd, path);
    if (tmp.exists()) {
        cwd = tmp;
    } else {
        System.out.println("Folder does not exist: " + tmp.getName());
    }
    System.out.println("Current folder is " + cwd.getName());
}

From source file:org.apache.commons.vfs2.example.Shell.java

/**
 * Does a 'touch' command./*from ww  w .  j  a  v a2s . co  m*/
 */
private void touch(final String[] cmd) throws Exception {
    if (cmd.length < 2) {
        throw new Exception("USAGE: touch <path>");
    }
    final FileObject file = mgr.resolveFile(cwd, cmd[1]);
    if (!file.exists()) {
        file.createFile();
    }
    file.getContent().setLastModifiedTime(System.currentTimeMillis());
}

From source file:org.apache.commons.vfs2.example.ShowProperties.java

public static void main(final String[] args) {
    if (args.length == 0) {
        System.err.println("Please pass the name of a file as parameter.");
        System.err.println("e.g. java org.apache.commons.vfs2.example.ShowProperties LICENSE.txt");
        return;/*from www  . j a v  a2 s.  c  o  m*/
    }
    for (final String arg : args) {
        try {
            final FileSystemManager mgr = VFS.getManager();
            System.out.println();
            System.out.println("Parsing: " + arg);
            final FileObject file = mgr.resolveFile(arg);
            System.out.println("URL: " + file.getURL());
            System.out.println("getName(): " + file.getName());
            System.out.println("BaseName: " + file.getName().getBaseName());
            System.out.println("Extension: " + file.getName().getExtension());
            System.out.println("Path: " + file.getName().getPath());
            System.out.println("Scheme: " + file.getName().getScheme());
            System.out.println("URI: " + file.getName().getURI());
            System.out.println("Root URI: " + file.getName().getRootURI());
            System.out.println("Parent: " + file.getName().getParent());
            System.out.println("Type: " + file.getType());
            System.out.println("Exists: " + file.exists());
            System.out.println("Readable: " + file.isReadable());
            System.out.println("Writeable: " + file.isWriteable());
            System.out.println("Root path: " + file.getFileSystem().getRoot().getName().getPath());
            if (file.exists()) {
                if (file.getType().equals(FileType.FILE)) {
                    System.out.println("Size: " + file.getContent().getSize() + " bytes");
                } else if (file.getType().equals(FileType.FOLDER) && file.isReadable()) {
                    final FileObject[] children = file.getChildren();
                    System.out.println("Directory with " + children.length + " files");
                    for (int iterChildren = 0; iterChildren < children.length; iterChildren++) {
                        System.out.println("#" + iterChildren + ": " + children[iterChildren].getName());
                        if (iterChildren > SHOW_MAX) {
                            break;
                        }
                    }
                }
                System.out.println("Last modified: "
                        + DateFormat.getInstance().format(new Date(file.getContent().getLastModifiedTime())));
            } else {
                System.out.println("The file does not exist");
            }
            file.close();
        } catch (final FileSystemException ex) {
            ex.printStackTrace();
        }
    }
}

From source file:org.apache.hadoop.gateway.topology.file.FileTopologyProvider.java

private Map<FileName, Topology> loadTopologies(FileObject directory) throws FileSystemException {
    Map<FileName, Topology> map = new HashMap<FileName, Topology>();
    if (directory.exists() && directory.getType().hasChildren()) {
        for (FileObject file : directory.getChildren()) {
            if (file.exists() && !file.getType().hasChildren()
                    && SUPPORTED_TOPOLOGY_FILE_EXTENSIONS.contains(file.getName().getExtension())) {
                try {
                    map.put(file.getName(), loadTopology(file));
                } catch (IOException e) {
                    // Maybe it makes sense to throw exception
                    log.failedToLoadTopology(file.getName().getFriendlyURI(), e);
                } catch (SAXException e) {
                    // Maybe it makes sense to throw exception
                    log.failedToLoadTopology(file.getName().getFriendlyURI(), e);
                } catch (Exception e) {
                    // Maybe it makes sense to throw exception
                    log.failedToLoadTopology(file.getName().getFriendlyURI(), e);
                }// w  w  w .  ja v  a  2  s  .c  om
            }
        }
    }
    return map;
}

From source file:org.apache.hadoop.gateway.topology.file.FileTopologyProviderTest.java

private FileObject createDir(String name) throws FileSystemException {
    FileSystemManager fsm = VFS.getManager();
    FileObject dir = fsm.resolveFile(name);
    dir.createFolder();//from   ww  w . ja va 2  s .  co  m
    assertTrue("Failed to create test dir " + dir.getName().getFriendlyURI(), dir.exists());
    return dir;
}