Example usage for org.apache.commons.vfs2 FileSelectInfo getBaseFolder

Introduction

In this page you can find the example usage for org.apache.commons.vfs2 FileSelectInfo getBaseFolder.

Prototype

FileObject getBaseFolder();

Source Link

Document

Returns the base folder of the traversal.

Usage

From source file:org.pentaho.hadoop.shim.common.DistributedCacheUtilImpl.java

/**
 * Attempts to find a plugin's installation folder on disk within all known plugin folder locations
 *
 * @param pluginFolderName Name of plugin folder
 * @return Tuple of [(FileObject) Location of the first plugin folder found as a direct descendant of one of the known
 * plugin folder locations, (String) Relative path from parent]
 * @throws KettleFileException Error getting plugin folders
 *//*from  w ww.ja v  a2s.c  o m*/
protected Object[] findPluginFolder(final String pluginFolderName) throws KettleFileException {
    List<PluginFolderInterface> pluginFolders = PluginFolder.populateFolders(null);
    if (pluginFolders != null) {
        for (PluginFolderInterface pluginFolder : pluginFolders) {
            FileObject folder = KettleVFS.getFileObject(pluginFolder.getFolder());

            try {
                if (folder.exists()) {
                    FileObject[] files = folder.findFiles(new FileSelector() {
                        @Override
                        public boolean includeFile(FileSelectInfo fileSelectInfo) throws Exception {
                            if (fileSelectInfo.getFile().equals(fileSelectInfo.getBaseFolder())) {
                                // Do not consider the base folders
                                return false;
                            }
                            // Determine relative name to compare
                            int baseNameLength = fileSelectInfo.getBaseFolder().getName().getPath().length()
                                    + 1;
                            String relativeName = fileSelectInfo.getFile().getName().getPath()
                                    .substring(baseNameLength);
                            // Compare plugin folder name with the relative name
                            return pluginFolderName.equals(relativeName);
                        }

                        @Override
                        public boolean traverseDescendents(FileSelectInfo fileSelectInfo) throws Exception {
                            return true;
                        }
                    });
                    if (files != null && files.length > 0) {
                        return new Object[] { files[0], folder.getName().getRelativeName(files[0].getName()) }; // Return the first match
                    }
                }
            } catch (FileSystemException ex) {
                throw new KettleFileException("Error searching for folder '" + pluginFolderName + "'", ex);
            }
        }
    }
    return null;
}

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