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Vaadin is a web application framework for Rich Internet Applications (RIA). Vaadin enables easy development and maintenance of fast and secure rich web applications with a stunning look and feel and a wide browser support. It features a server-side architecture with the majority of the logic running on the server. Ajax technology is used at the browser-side to ensure a rich and interactive user experience.

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/*
 * Copyright 2012 Google Inc.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package elemental.html;

import elemental.events.*;
import elemental.util.*;
import elemental.dom.*;
import elemental.html.*;
import elemental.css.*;
import elemental.stylesheets.*;

import java.util.Date;

/**
  * Storage is a SQLite database API. It is available to trusted callers, meaning extensions and Firefox components only.
The API is currently "unfrozen", which means it is subject to change at any time; in fact, it has changed somewhat with each release of Firefox since it was introduced, and will likely continue to do so for a while.
Note: Storage is not the same as the DOM:Storage feature which can be used by web pages to store persistent data or the Session store API (an XPCOM storage utility for use by extensions).
  */
public interface Storage {

  int getLength();

  void clear();

  String getItem(String key);

  String key(int index);

  void removeItem(String key);

  void setItem(String key, String data);
}