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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;

/**
  * DRAFT
This page is not complete.



The DatabaseSync interface in the IndexedDB API represents a synchronous connection to a database.
  */
public interface DatabaseSync {

  String getLastErrorMessage();


  /**
    * The version of the connected database. Has the null value when the database is first created.
    */
  String getVersion();

  void changeVersion(String oldVersion, String newVersion);

  void changeVersion(String oldVersion, String newVersion, SQLTransactionSyncCallback callback);

  void readTransaction(SQLTransactionSyncCallback callback);


  /**
    * Creates and returns a transaction, acquiring locks on the given database objects, within the specified timeout duration, if possible.
IDBTransactionSync transaction (
  in optional DOMStringList storeNames,
  in optional unsigned int timeout
) raises (IDBDatabaseException);

Parameters
 storeNames
 The names of object stores and indexes in the scope of the new transaction.
 timeout
 The interval that this operation is allowed to take to acquire locks on all the objects stores and indexes identified in storeNames.

Returns
 IDBTransactionSync
 An object to access the newly created transaction.

Exceptions
This method can raise an IDBDatabaseException with the following code:
 TIMEOUT_ERR
 If reserving all the database objects identified in storeNames takes longer than the timeout interval.

    */
  void transaction(SQLTransactionSyncCallback callback);
}