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

Introduction

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

Prototype

void refresh() throws FileSystemException;

Source Link

Document

This will prepare the fileObject to get resynchronized with the underlying file system if required.

Usage

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

@Override
public FileObject resolveFile(final FileName name) throws FileSystemException {

    synchronized (this) {
        if (null == this.fs) {
            final String hdfsUri = name.getRootURI();
            final Configuration conf = new Configuration(true);
            conf.set(org.apache.hadoop.fs.FileSystem.FS_DEFAULT_NAME_KEY, hdfsUri);
            this.fs = null;
            try {
                fs = org.apache.hadoop.fs.FileSystem.get(conf);
            } catch (final IOException e) {
                log.error("Error connecting to filesystem " + hdfsUri, e);
                throw new FileSystemException("Error connecting to filesystem " + hdfsUri, e);
            }//from  w  w  w  .j ava 2s . c  om
        }
    }

    boolean useCache = (null != getContext().getFileSystemManager().getFilesCache());
    FileObject file;
    if (useCache) {
        file = this.getFileFromCache(name);
    } else {
        file = null;
    }
    if (null == file) {
        String path = null;
        try {
            path = URLDecoder.decode(name.getPath(), UTF_8.name());
        } catch (final UnsupportedEncodingException e) {
            path = name.getPath();
        }
        final Path filePath = new Path(path);
        file = new HdfsFileObject((AbstractFileName) name, this, fs, filePath);
        if (useCache) {
            this.putFileToCache(file);
        }

    }

    /**
     * resync the file information if requested
     */
    if (getFileSystemManager().getCacheStrategy().equals(CacheStrategy.ON_RESOLVE)) {
        file.refresh();
    }

    return file;
}

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From source file:org.esupportail.portlet.filemanager.services.vfs.VfsAccessImpl.java

private FileObject cd(String path, SharedUserPortletParameters userParameters) {
    try {//from www .  j av a 2  s  .c  o  m
        // assure that it'as already opened
        this.open(userParameters);

        FileObject returnValue = null;

        if (path == null || path.length() == 0) {
            returnValue = root;
        } else {
            returnValue = root.resolveFile(path);
        }

        //Added for GIP Recia : make sure that the file is up to date
        returnValue.refresh();
        return returnValue;
    } catch (FileSystemException fse) {
        throw new EsupStockException(fse);
    }
}

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From source file:org.jahia.modules.external.vfs.VFSDataSource.java

@Override
public List<ExternalData> getChildrenNodes(String path) throws RepositoryException {
    try {// w w  w  . j  av a 2  s  .co  m
        if (!path.endsWith(JCR_CONTENT_SUFFIX)) {
            FileObject fileObject = getFile(path);
            if (fileObject.getType() == FileType.FILE) {
                final FileContent content = fileObject.getContent();
                return Collections.singletonList(getFileContent(content));
            } else if (fileObject.getType() == FileType.FOLDER) {
                fileObject.refresh(); //in case of folder, refresh because it could be changed external               
                FileObject[] files = fileObject.getChildren();
                if (files.length > 0) {
                    List<ExternalData> children = new LinkedList<ExternalData>();
                    for (FileObject object : files) {
                        if (getSupportedNodeTypes().contains(getDataType(object))) {
                            children.add(getFile(object));
                            if (object.getType() == FileType.FILE) {
                                children.add(getFileContent(object.getContent()));
                            }
                        }
                    }
                    return children;
                } else {
                    return Collections.emptyList();
                }
            } else {
                if (fileObject.exists()) {
                    logger.warn("Found non file or folder entry at path {}, maybe an alias. VFS file type: {}",
                            fileObject, fileObject.getType());
                } else {
                    throw new PathNotFoundException(path);
                }
            }
        }
    } catch (FileSystemException e) {
        logger.error("Cannot get node children", e);
    }

    return Collections.emptyList();
}

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From source file:org.ow2.proactive_grid_cloud_portal.dataspace.FileSystem.java

public FileObject resolveFileInUserspace(String pathname) throws FileSystemException {
    FileObject answer = fsm.resolveFile(fsm.resolveFile(userspace), pathname);
    answer.refresh();
    return answer;
}

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From source file:org.ow2.proactive_grid_cloud_portal.dataspace.FileSystem.java

public FileObject resolveFileInGlobalspace(String pathname) throws FileSystemException {
    FileObject answer = fsm.resolveFile(fsm.resolveFile(globalspace), pathname);
    answer.refresh();
    return answer;
}

---

From source file:org.ow2.proactive_grid_cloud_portal.dataspace.FileSystem.java

public FileObject resolveFile(String dirPath, String pathname) throws FileSystemException {
    FileObject answer = fsm
            .resolveFile(dirPath + (dirPath.endsWith(File.separator) ? "" : File.separator) + pathname);
    answer.refresh();
    return answer;
}

---

From source file:org.ow2.proactive_grid_cloud_portal.dataspace.FileSystem.java

public FileObject createFile(String pathname) throws FileSystemException {
    FileObject fo = fsm.resolveFile(pathname);
    fo.refresh();
    if (!fo.exists()) {
        fo.createFile();//from w w w. ja v  a  2 s .c  o m
    }
    return fo;
}

---

From source file:org.ow2.proactive_grid_cloud_portal.dataspace.FileSystem.java

public static ListFile list(FileObject fo, List<String> includes, List<String> excludes)
        throws FileSystemException {
    fo.refresh();
    ListFile answer = new ListFile();
    List<String> dirList = Lists.newArrayList();
    List<String> fileList = Lists.newArrayList();
    List<String> fullList = Lists.newArrayList();
    List<FileObject> foundFileObjects = new LinkedList<>();
    if (isNullOrEmpty(includes) && isNullOrEmpty(excludes)) {
        fo.findFiles(Selectors.SELECT_CHILDREN, false, foundFileObjects);
    } else {/*w w  w  .j a va2 s. c o  m*/
        FileSelector selector = new org.objectweb.proactive.extensions.dataspaces.vfs.selector.FileSelector(
                includes, excludes);
        fo.findFiles(selector, false, foundFileObjects);
    }

    for (FileObject child : foundFileObjects) {
        FileType type = child.getType();
        FileName childName = child.getName();
        switch (type) {
        case FOLDER:
            if (!child.equals(fo)) {
                // exclude root directory from the list
                String relativePath = fo.getName().getRelativeName(childName);
                dirList.add(relativePath);
                fullList.add(relativePath);
            }
            break;
        case FILE:
            String relativePath = fo.getName().getRelativeName(childName);
            fileList.add(relativePath);
            fullList.add(relativePath);
            break;
        default:
            throw new RuntimeException("Unknown : " + type);
        }
    }
    Collections.sort(dirList);
    Collections.sort(fileList);
    Collections.sort(fullList);
    answer.setDirectoryListing(dirList);
    answer.setFileListing(fileList);
    answer.setFullListing(fullList);
    return answer;
}

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From source file:org.ow2.proactive_grid_cloud_portal.dataspace.FileSystem.java

public static List<FileObject> findFiles(FileObject root, List<String> includes, List<String> excludes)
        throws FileSystemException {
    root.refresh();
    List<FileObject> files = Lists.newArrayList();
    FileSelector selector = (isNullOrEmpty(includes) && isNullOrEmpty(excludes)) ? new AllFilesSelector()
            : new org.objectweb.proactive.extensions.dataspaces.vfs.selector.FileSelector(includes, excludes);
    root.findFiles(selector, true, files);
    return files;
}

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From source file:org.ow2.proactive_grid_cloud_portal.dataspace.FileSystem.java

public static void copy(InputStream is, FileObject outFile) throws IOException {
    outFile.refresh();
    Closer closer = Closer.create();// ww  w .ja va  2s. c o m
    closer.register(is);
    try {
        OutputStream os = outFile.getContent().getOutputStream();
        closer.register(os);
        ByteStreams.copy(is, os);
    } catch (IOException ioe) {
        throw closer.rethrow(ioe);
    } finally {
        closer.close();
    }
}

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