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

Introduction

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

Prototype

public boolean exists() throws FileSystemException;

Source Link

Document

Determines if this file exists.

Usage

From source file:com.newatlanta.appengine.junit.vfs.gae.GaeFolderTestCase.java

private static void assertFolder(FileObject folder) throws Exception {
    assertTrue(folder.exists());
    assertTrue(folder.isAttached()); // exists() causes attach
    assertTrue(folder.isReadable());/*  w w w .  ja v  a2  s  .com*/
    assertTrue(folder.isWriteable());
    assertFalse(folder.isHidden());
    assertTrue(folder.getType().hasChildren());
    assertFalse(folder.getType().hasContent());

    // TODO: with combined local option, local children of GAE folder will
    // have a different parent; maybe we can compare paths when GaeFileName
    // is modified to store abspath like LocalFileName
    //      FileObject[] children = folder.getChildren();
    //      for ( FileObject child : children ) {
    //         assertEquals( folder, child.getParent() );
    //         FileObject childObject = folder.getChild( child.getName().getURI() );
    //         assertEquals( child, childObject );
    //         assertEquals( folder, childObject.getParent() );
    //      }

    // TODO: use folder.findFiles( Selectors.SELECT_ALL) to get all
    // descendants, then test FileName.isDescendant() and isAncestor()
}

From source file:cc.aileron.commons.resource.ResourceLoaders.java

/**
 * try-load/*w w w  .  j  ava 2  s . co  m*/
 * 
 * @param path
 * @return
 * @throws URISyntaxException
 * @throws MalformedURLException
 * @throws ResourceNotFoundException
 */
private static Resource tryLoad(final String path)
        throws URISyntaxException, MalformedURLException, ResourceNotFoundException {
    for (final Entry<Type, Loader> entry : map.entrySet()) {
        final ResourceLoaders.Type type = entry.getKey();
        final ResourceLoaders.Loader loader = entry.getValue();
        try {
            final FileObject file = loader.get(path);
            if (file.exists()) {
                return new ResourceImpl(file.getContent(), type);
            }
        } catch (final Exception e)// ?????
        {
        }
    }
    throw new ResourceNotFoundException(path);
}

From source file:com.panet.imeta.core.vfs.KettleVFS.java

public static boolean fileExists(String vfsFilename) throws IOException {
    FileObject fileObject = getFileObject(vfsFilename);
    return fileObject.exists();
}

From source file:com.panet.imeta.core.vfs.KettleVFS.java

public static OutputStream getOutputStream(FileObject fileObject, boolean append) throws IOException {
    FileObject parent = fileObject.getParent();
    if (parent != null) {
        if (!parent.exists()) {
            throw new IOException(
                    Messages.getString("KettleVFS.Exception.ParentDirectoryDoesNotExist", getFilename(parent)));
        }//from  ww  w . j a va 2s . c  o m
    }
    try {
        fileObject.createFile();
        FileContent content = fileObject.getContent();
        return content.getOutputStream(append);
    } catch (FileSystemException e) {
        // Perhaps if it's a local file, we can retry using the standard
        // File object.  This is because on Windows there is a bug in VFS.
        //
        if (fileObject instanceof LocalFile) {
            try {
                String filename = getFilename(fileObject);
                return new FileOutputStream(new File(filename), append);
            } catch (Exception e2) {
                throw e; // throw the original exception: hide the retry.
            }
        } else {
            throw e;
        }
    }
}

From source file:com.newatlanta.appengine.junit.vfs.gae.GaeVfsTestCase.java

public static void assertEquals(File file, FileObject fileObject) throws Exception {
    assertEqualPaths(file, fileObject);/*from   w ww  .  j a v a  2  s.com*/
    assertEquals(file.canRead(), fileObject.isReadable());
    assertEquals(file.canWrite(), fileObject.isWriteable());
    assertEquals(file.exists(), fileObject.exists());
    if (file.getParentFile() == null) {
        assertNull(fileObject.getParent());
    } else {
        assertEqualPaths(file.getParentFile(), fileObject.getParent());
    }
    assertEquals(file.isDirectory(), fileObject.getType().hasChildren());
    assertEquals(file.isFile(), fileObject.getType().hasContent());
    assertEquals(file.isHidden(), fileObject.isHidden());
    if (file.isFile()) {
        assertEquals(file.length(), fileObject.getContent().getSize());
    }
    if (file.isDirectory()) { // same children
        File[] childFiles = file.listFiles();
        FileObject[] childObjects = fileObject.getChildren();
        assertEquals(childFiles.length, childObjects.length);
        for (int i = 0; i < childFiles.length; i++) {
            assertEqualPaths(childFiles[i], childObjects[i]);
        }
    }
}

From source file:com.pongasoft.util.io.IOUtils.java

/**
 * Wraps the provided file object within a jar file object
 * (ex: <code>createJarFileObject(file:///tmp/foo.jar)</code> will return
 * <code>jar:file:///tmp.foo.jar!/</code>
 *
 * @param fileObject the orginal jar file
 * @return the wrapped file object (note that it the orignial object does not exists, it
 *         is simply returned (as wrapping it throws an exception...)
 * @throws IOException if there is something wrong
 *//*  w w w  .  ja va  2 s  .co m*/
public static FileObject createJarFileObject(FileObject fileObject) throws IOException {
    if (fileObject == null)
        return null;

    if (fileObject.exists()) {
        FileSystemManager fsm = fileObject.getFileSystem().getFileSystemManager();
        return fsm.resolveFile("jar:" + fileObject.getURL() + "!/");
    } else
        return fileObject;
}

From source file:net.sf.vfsjfilechooser.utils.VFSUtils.java

/**
 * Returns the root file system of a file representation
 * @param fileObject A file abstraction//from   w  ww  . j  a  va2s .co  m
 * @return the root file system of a file representation
 */
public static FileObject getRootFileSystem(FileObject fileObject) {
    try {
        if ((fileObject == null) || !fileObject.exists()) {
            return null;
        }

        return fileObject.getFileSystem().getRoot();
    } catch (FileSystemException ex) {
        return null;
    }
}

From source file:net.sf.vfsjfilechooser.utils.VFSUtils.java

/**
 * Tells whether a file exists//from www  . j  a v a2  s .c om
 * @param fileObject A file representation
 * @return whether a file exists
 */
public static boolean exists(FileObject fileObject) {
    if (fileObject == null) {
        return false;
    }

    try {
        return fileObject.exists();
    } catch (FileSystemException ex) {
        return false;
    }
}

From source file:egovframework.rte.fdl.filehandling.EgovFileUtil.java

/**
 * <p>//from   ww  w.  j a  v  a 2s .  co  m
 *  ?    ??.
 * </p>
 * @param changDirectory
 *        <code>String</code>
 * @throws Exception
 */
public static void cd(final String changDirectory) throws Exception {
    final String path;
    if (!EgovStringUtil.isNull(changDirectory)) {
        path = changDirectory;
    } else {
        path = System.getProperty("user.home");
    }

    // Locate and validate the folder
    FileObject tmp = manager.resolveFile(basefile, path);

    if (tmp.exists()) {
        basefile = tmp;
    } else {
        log.info("Folder does not exist: " + tmp.getName());
    }
    log.info("Current folder is " + basefile.getName());
}

From source file:egovframework.rte.fdl.filehandling.EgovFileUtil.java

/**
 * <p>//from  w w w. ja va  2s  . co  m
 *  ? ?? ?  .
 * </p>
 * @param source
 *        <code>String</code>
 * @param target
 *        <code>String</code>
 * @throws Exception
 */
public static void cp(String source, String target) throws Exception {

    try {
        final FileObject src = manager.resolveFile(basefile, source);
        FileObject dest = manager.resolveFile(basefile, target);

        if (dest.exists() && dest.getType() == FileType.FOLDER) {
            dest = dest.resolveFile(src.getName().getBaseName());
        }

        dest.copyFrom(src, Selectors.SELECT_ALL);
    } catch (FileSystemException fse) {
        log.error(fse.toString());
        ;
        throw new FileSystemException(fse);
    }
}