InstallData data = InstallData.getInstance();
File xpdRoot = data.getInfoRoot("xpd");
if ( xpdRoot != null ) {
File[] file = xpdRoot.listFiles(new FileExtensionFilter("xpd"));
if (file != null) {
for (int i = 0; i < file.length; i++) {
parser.parse(file[i], handler);
}