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:ShowProperties.java

public static void main(String[] args) throws FileSystemException {
    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  w w w.  ja  v  a  2 s  . c  om
    }
    for (int i = 0; i < args.length; i++) {
        try {
            FileSystemManager mgr = VFS.getManager();
            System.out.println();
            System.out.println("Parsing: " + args[i]);
            FileObject file = mgr.resolveFile(args[i]);
            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()) {
                    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 > 5) {
                            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 (FileSystemException ex) {
            ex.printStackTrace();
        }
    }
}

---

From source file:fulcrum.xml.ParserTest.java

private static InputStream getInputStream(String location) {
    InputStream is = null;//from ww  w .  j  a v a  2 s  . c  o  m
    try {
        FileSystemManager fsManager = VFS.getManager();
        FileObject fileObj = fsManager.resolveFile(location);
        if (fileObj != null && fileObj.exists() && fileObj.isReadable()) {
            FileContent content = fileObj.getContent();
            is = content.getInputStream();
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return is;
}

---

From source file:fi.mystes.synapse.mediator.vfs.VFSTestHelper.java

public static void createDirectory(String dirPath) throws FileSystemException {
    FileObject dir = VFS.getManager().resolveFile(dirPath);
    if (!dir.exists()) {
        dir.createFolder();/*  w w w  .j  ava  2s  . co  m*/
    }
}

---

From source file:com.yenlo.synapse.transport.vfs.VFSUtils.java

/**
 * Release a file item lock acquired either by the VFS listener or a sender
 *
 * @param fsManager which is used to resolve the processed file
 * @param fo representing the processed file
 *//*from  w w w  . ja  v a  2 s  .c  om*/
public static void releaseLock(FileSystemManager fsManager, FileObject fo) {
    try {
        String fullPath = fo.getName().getURI();
        int pos = fullPath.indexOf("?");
        if (pos > -1) {
            fullPath = fullPath.substring(0, pos);
        }
        FileObject lockObject = fsManager.resolveFile(fullPath + ".lock");
        if (lockObject.exists()) {
            lockObject.delete();
        }
    } catch (FileSystemException e) {
        log.error("Couldn't release the lock for the file : " + fo.getName() + " after processing");
    }
}

---

From source file:com.yenlo.synapse.transport.vfs.VFSUtils.java

/**
 * Acquires a file item lock before processing the item, guaranteing that the file is not
 * processed while it is being uploaded and/or the item is not processed by two listeners
 *
 * @param fsManager used to resolve the processing file
 * @param fo representing the processing file item
 * @return boolean true if the lock has been acquired or false if not
 *//*from   w ww  .  j a va2  s.c o m*/
public synchronized static boolean acquireLock(FileSystemManager fsManager, FileObject fo) {

    // generate a random lock value to ensure that there are no two parties
    // processing the same file
    Random random = new Random();
    byte[] lockValue = String.valueOf(random.nextLong()).getBytes();

    try {
        // check whether there is an existing lock for this item, if so it is assumed
        // to be processed by an another listener (downloading) or a sender (uploading)
        // lock file is derived by attaching the ".lock" second extension to the file name
        String fullPath = fo.getName().getURI();
        int pos = fullPath.indexOf("?");
        if (pos != -1) {
            fullPath = fullPath.substring(0, pos);
        }
        FileObject lockObject = fsManager.resolveFile(fullPath + ".lock");
        if (lockObject.exists()) {
            log.debug("There seems to be an external lock, aborting the processing of the file " + fo.getName()
                    + ". This could possibly be due to some other party already "
                    + "processing this file or the file is still being uploaded");
        } else {

            // write a lock file before starting of the processing, to ensure that the
            // item is not processed by any other parties
            lockObject.createFile();
            OutputStream stream = lockObject.getContent().getOutputStream();
            try {
                stream.write(lockValue);
                stream.flush();
                stream.close();
            } catch (IOException e) {
                lockObject.delete();
                log.error("Couldn't create the lock file before processing the file " + fullPath, e);
                return false;
            } finally {
                lockObject.close();
            }

            // check whether the lock is in place and is it me who holds the lock. This is
            // required because it is possible to write the lock file simultaneously by
            // two processing parties. It checks whether the lock file content is the same
            // as the written random lock value.
            // NOTE: this may not be optimal but is sub optimal
            FileObject verifyingLockObject = fsManager.resolveFile(fullPath + ".lock");
            if (verifyingLockObject.exists() && verifyLock(lockValue, verifyingLockObject)) {
                return true;
            }
        }
    } catch (FileSystemException fse) {
        log.error("Cannot get the lock for the file : " + maskURLPassword(fo.getName().getURI())
                + " before processing");
    }
    return false;
}

---

From source file:net.dempsy.distconfig.apahcevfs.Utils.java

public static FileObject getLatest(final FileObject parent) throws FileSystemException {
    try {/*from  ww  w .ja  v  a 2s  .co m*/
        final FileObject[] children = parent.getChildren();
        if (children == null || children.length == 0)
            return null;
        return Arrays.stream(children).reduce(null, findLatest, findLatest);
    } catch (final FileNotFoundException | FileNotFolderException afnfe) {
        if (parent.exists())
            throw afnfe;
        return null;
    }
}

---

From source file:com.googlecode.vfsjfilechooser2.utils.VFSUtils.java

/**
 * Returns the root file system of a file representation
 * @param fileObject A file abstraction/*from ww w  .j a  va2  s .c o 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:com.googlecode.vfsjfilechooser2.utils.VFSUtils.java

/**
 * Tells whether a file exists/*  w w w.j  av  a  2s.c  o m*/
 * @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:fr.cls.atoll.motu.processor.wps.TestServiceMetadata.java

public static String[] getServiceMetadataSchemaAsString(String schemaPath) throws MotuException {

    List<String> stringList = new ArrayList<String>();
    String localIso19139SchemaPath = "file:///c:/tempVFS/testISO";
    String localIso19139RootSchemaRelPath = "/srv/srv.xsd";
    String localIso19139RootSchemaPath = String.format("%s%s", localIso19139SchemaPath,
            localIso19139RootSchemaRelPath);

    FileObject dest = Organizer.resolveFile(localIso19139RootSchemaPath);
    boolean hasIso19139asLocalSchema = false;
    try {//from w w  w  .  j  a v a  2s  . c  o  m
        if (dest != null) {
            hasIso19139asLocalSchema = dest.exists();
        }
    } catch (FileSystemException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }

    if (hasIso19139asLocalSchema) {
        try {
            dest.close();
        } catch (FileSystemException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    } else {

        // URL url = Organizer.findResource("schema/iso/srv/srv.xsd");
        // URL url =
        // Organizer.findResource("J:/dev/iso/19139/20070417/schema/src/main/resources/iso/19139/20070417/srv/srv.xsd");
        // URL url = Organizer.findResource("iso/19139/20070417/srv/srv.xsd");
        URL url = Organizer.findResource(schemaPath);
        System.out.println(url);

        // String[] arr = url.toString().split("!");

        // FileObject jarFile = Organizer.resolveFile(arr[0]);
        FileObject jarFile = Organizer.resolveFile(url.toString());

        // List the children of the Jar file
        FileObject[] children = null;
        try {
            children = jarFile.getChildren();
        } catch (FileSystemException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        System.out.println("Children of " + jarFile.getName().getURI());
        for (int i = 0; i < children.length; i++) {
            System.out.println(children[i].getName().getBaseName());
        }

        dest = Organizer.resolveFile(localIso19139SchemaPath);
        Organizer.deleteDirectory(dest);

        Organizer.copyFile(jarFile, dest);
    }

    // stringList.add(url.toString());
    // stringList.add("J:/dev/iso/19139/20070417/schema/src/main/resources/iso/19139/20070417/srv/srv.xsd");
    stringList.add(localIso19139RootSchemaPath);
    // stringList.add("C:/Documents and Settings/dearith/Mes documents/Atoll/SchemaIso/srv/serviceMetadata.xsd");
    String[] inS = new String[stringList.size()];
    inS = stringList.toArray(inS);
    return inS;
}

---

From source file:fulcrum.xml.soap12.Soap12XOMTest.java

@Test
public void testXOM() {
    Document doc = null;//from  www  . ja va  2 s.co  m
    Builder parser = null;
    try {
        FileSystemManager fsManager = VFS.getManager();
        FileObject fileObj = fsManager.resolveFile(SIMPLE);
        if (fileObj != null && fileObj.exists() && fileObj.isReadable()) {

            FileContent content = fileObj.getContent();
            InputStream is = content.getInputStream();
            LOGGER.info("STARTING PARSE:");
            parser = new Builder();
            doc = parser.build(is);
            LOGGER.info("ENDING PARSE");
            System.out.println(doc.toXML());
        }
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        parser = null;
    }
}

---

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