UserInfoServiceImpl.java

// -*- mode: java; c-basic-offset: 2; -*-
// Copyright 2009-2011 Google, All Rights reserved
// Copyright 2011-2012 MIT, All rights reserved
// Released under the MIT License https://raw.github.com/mit-cml/app-inventor/master/mitlicense.txt

package com.google.appinventor.server;

import com.google.appinventor.server.storage.StorageIo;
import com.google.appinventor.server.storage.StorageIoInstanceHolder;
import com.google.appinventor.shared.rpc.user.User;
import com.google.appinventor.shared.rpc.user.UserInfoService;

/**
 * Implementation of the user information service.
 *
 * <p>Note that this service must be state-less so that it can be run on
 * multiple servers.
 *
 */
public class UserInfoServiceImpl extends OdeRemoteServiceServlet implements UserInfoService {

  // Storage of user settings
  private final transient StorageIo storageIo = StorageIoInstanceHolder.INSTANCE;

  private static final long serialVersionUID = -7316312435338169166L;

  /**
   * Returns user information.
   *
   * @return  user information record
   */
  @Override
  public User getUserInformation() {
    return userInfoProvider.getUser();
  }

  /**
   * Retrieves the user's settings.
   *
   * @return  user's settings
   */
  @Override
  public String loadUserSettings() {
    return storageIo.loadSettings(userInfoProvider.getUserId());
  }

  /**
   * Stores the user's settings.
   * @param settings  user's settings
   */
  @Override
  public void storeUserSettings(String settings) {
    storageIo.storeSettings(userInfoProvider.getUserId(), settings);
  }

  /**
   * Returns true if the current user has a user file with the given file name
   */
  @Override
  public boolean hasUserFile(String fileName) {
    return storageIo.getUserFiles(userInfoProvider.getUserId()).contains(fileName);
  }

  /**
   * Deletes the user file with the given file name
   */
  @Override
  public void deleteUserFile(String fileName) {
    storageIo.deleteUserFile(userInfoProvider.getUserId(), fileName);
  }
}