| // Copyright 2010 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 com.google.gwtorm.nosql.heap; |
| |
| import com.google.gwtorm.server.OrmException; |
| import com.google.gwtorm.server.Schema; |
| |
| /** |
| * Toy in-memory implementation of a NoSQL database. |
| * |
| * <p>Implements a simple NoSQL database with a standard {@link java.util.TreeMap} held inside of |
| * this JVM process. All operations occur on the TreeMap, with no durability across database |
| * restarts. Therefore this implementation is only suitable for simple tests. |
| * |
| * @param <T> type of the application schema. |
| * @see FileDatabase |
| */ |
| @SuppressWarnings("rawtypes") |
| public class MemoryDatabase<T extends Schema> |
| extends TreeMapDatabase<T, TreeMapSchema, TreeMapAccess> { |
| |
| /** |
| * Create the database and implement the application's schema interface. |
| * |
| * @param schema the application schema this database will open. |
| * @throws OrmException the schema cannot be queried. |
| */ |
| public MemoryDatabase(final Class<T> schema) throws OrmException { |
| super(TreeMapSchema.class, TreeMapAccess.class, schema); |
| } |
| } |