1 package org.apache.onami.persist; 2 3 /* 4 * Licensed to the Apache Software Foundation (ASF) under one 5 * or more contributor license agreements. See the NOTICE file 6 * distributed with this work for additional information 7 * regarding copyright ownership. The ASF licenses this file 8 * to you under the Apache License, Version 2.0 (the 9 * "License"); you may not use this file except in compliance 10 * with the License. You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, 15 * software distributed under the License is distributed on an 16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 17 * KIND, either express or implied. See the License for the 18 * specific language governing permissions and limitations 19 * under the License. 20 */ 21 22 /** 23 * Interface which hides away the details of inner (nested) and outer transactions as well as the details between 24 * {@link javax.persistence.EntityTransaction} and {@link javax.transaction.UserTransaction}. 25 */ 26 interface TransactionFacade 27 { 28 29 /** 30 * Starts a transaction. 31 * <p/> 32 * The first call to begin will start the outer transaction. Subsequent calls will start a inner transaction. 33 */ 34 void begin(); 35 36 /** 37 * Commits a transaction. 38 * <p/> 39 * Only the outer transaction can be committed. Calls to commit on inner transactions have no effect. 40 */ 41 void commit(); 42 43 /** 44 * Rolls a transaction back. 45 * <p/> 46 * Only the outer transaction can be rolled back. Calls to rollback on inner transactions will set the rollbackOnly 47 * flag on the outer transaction. Setting this flag wil cause an outer transaction to be rolled back in any case. 48 */ 49 void rollback(); 50 51 }