Java tutorial
/** * Copyright 2014 LiveRamp * * 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.liveramp.megadesk.base.state; import java.util.Map; import com.google.common.collect.Maps; import com.liveramp.megadesk.core.state.Persistence; import com.liveramp.megadesk.core.state.PersistenceTransaction; public class InMemoryPersistenceTransaction implements PersistenceTransaction { private final Map<Persistence, Object> writes; public InMemoryPersistenceTransaction() { writes = Maps.newHashMap(); } public <VALUE> void write(Persistence persistence, VALUE value) { writes.put(persistence, value); } @Override public void commit() { for (Map.Entry<Persistence, Object> entry : writes.entrySet()) { Persistence persistence = entry.getKey(); Object value = entry.getValue(); persistence.write(value); } } }