Java tutorial
/* * Copyright 2016 Samppa Saarela * * 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 org.javersion.store.jdbc; import static org.springframework.transaction.annotation.Isolation.READ_COMMITTED; import static org.springframework.transaction.annotation.Propagation.MANDATORY; import static org.springframework.transaction.annotation.Propagation.REQUIRED; import static org.springframework.transaction.annotation.Propagation.REQUIRES_NEW; import static org.springframework.transaction.support.TransactionSynchronizationManager.registerSynchronization; import java.util.function.Supplier; import org.springframework.transaction.annotation.Transactional; import org.springframework.transaction.support.TransactionSynchronizationAdapter; public class SpringTransactions implements Transactions { @Override @Transactional(readOnly = true, isolation = READ_COMMITTED, propagation = REQUIRED) public <T> T readOnly(Supplier<T> callback) { return callback.get(); } @Override @Transactional(readOnly = false, isolation = READ_COMMITTED, propagation = REQUIRED) public <T> T writeRequired(Supplier<T> callback) { return callback.get(); } @Override @Transactional(readOnly = false, isolation = READ_COMMITTED, propagation = REQUIRES_NEW) public <T> T writeNewRequired(Supplier<T> callback) { return callback.get(); } @Override @Transactional(readOnly = false, isolation = READ_COMMITTED, propagation = MANDATORY) public <T> T writeMandatory(Supplier<T> callback) { return callback.get(); } @Override public void afterCommit(final Runnable callback) { registerSynchronization(new TransactionSynchronizationAdapter() { @Override public void afterCommit() { callback.run(); } }); } }