private void check()

in commons-vfs2/src/main/java/org/apache/commons/vfs2/impl/DefaultFileMonitor.java [116:165]
30 lines of code
12 McCabe index (conditional complexity)

        private void check() {
            refresh();

            try {
                // If the file existed and now doesn't
                if (exists && !fileObject.exists()) {
                    exists = fileObject.exists();
                    timestamp = -1;

                    // Fire delete event

                    ((AbstractFileSystem) fileObject.getFileSystem()).fireFileDeleted(fileObject);

                    // Remove listener in case file is re-created. Don't want to fire twice.
                    if (defaultFileMonitor.getFileListener() != null) {
                        fileObject.getFileSystem().removeListener(fileObject, defaultFileMonitor.getFileListener());
                    }

                    // Remove from map
                    defaultFileMonitor.queueRemoveFile(fileObject);
                } else if (exists && fileObject.exists()) {

                    // Check the timestamp to see if it has been modified
                    if (timestamp != fileObject.getContent().getLastModifiedTime()) {
                        timestamp = fileObject.getContent().getLastModifiedTime();
                        // Fire change event

                        // Don't fire if it's a folder because new file children
                        // and deleted files in a folder have their own event triggered.
                        if (!fileObject.getType().hasChildren()) {
                            ((AbstractFileSystem) fileObject.getFileSystem()).fireFileChanged(fileObject);
                        }
                    }

                } else if (!exists && fileObject.exists()) {
                    exists = fileObject.exists();
                    timestamp = fileObject.getContent().getLastModifiedTime();
                    // Don't fire if it's a folder because new file children
                    // and deleted files in a folder have their own event triggered.
                    if (!fileObject.getType().hasChildren()) {
                        ((AbstractFileSystem) fileObject.getFileSystem()).fireFileCreated(fileObject);
                    }
                }

                checkForNewChildren();

            } catch (final FileSystemException fse) {
                LOG.error(fse.getLocalizedMessage(), fse);
            }
        }