| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.openjpa.persistence.jdbc; |
| |
| import java.sql.Connection; |
| |
| import org.apache.openjpa.kernel.FetchConfiguration; |
| import org.apache.openjpa.persistence.OpenJPAEnum; |
| |
| /** |
| * Isolation levels for use in {@link JDBCFetchPlan#setIsolation}. |
| * |
| * @since 0.9.7 |
| * @published |
| */ |
| public enum IsolationLevel implements OpenJPAEnum<IsolationLevel>{ |
| DEFAULT(-1, "default"), |
| NONE(Connection.TRANSACTION_NONE, "none"), |
| READ_UNCOMMITTED(Connection.TRANSACTION_READ_UNCOMMITTED, "read-uncommitted", "READ_UNCOMMITTED"), |
| READ_COMMITTED(Connection.TRANSACTION_READ_COMMITTED, "read-committed", "READ_COMMITTED"), |
| REPEATABLE_READ(Connection.TRANSACTION_REPEATABLE_READ, "repeatable-read", "REPEATABLE_READ"), |
| SERIALIZABLE(Connection.TRANSACTION_SERIALIZABLE, "serializable"); |
| |
| private final int _connectionConstant; |
| private final String[] _names; |
| |
| private IsolationLevel(int connectionConstant, String... names) { |
| _connectionConstant = connectionConstant; |
| _names = names; |
| } |
| |
| public int getConnectionConstant() { |
| return _connectionConstant; |
| } |
| |
| public static IsolationLevel fromConnectionConstant(int constant) { |
| switch(constant) { |
| case -1: |
| case FetchConfiguration.DEFAULT: |
| return DEFAULT; |
| |
| case Connection.TRANSACTION_NONE: |
| return NONE; |
| |
| case Connection.TRANSACTION_READ_UNCOMMITTED: |
| return READ_UNCOMMITTED; |
| |
| case Connection.TRANSACTION_READ_COMMITTED: |
| return READ_COMMITTED; |
| |
| case Connection.TRANSACTION_REPEATABLE_READ: |
| return REPEATABLE_READ; |
| |
| case Connection.TRANSACTION_SERIALIZABLE: |
| return SERIALIZABLE; |
| |
| default: |
| throw new IllegalArgumentException( |
| Integer.valueOf(constant).toString()); |
| } |
| } |
| |
| public IsolationLevel fromKernelConstant(int i) { |
| return IsolationLevel.fromConnectionConstant(i); |
| } |
| |
| @Override |
| public int toKernelConstant() { |
| return getConnectionConstant(); |
| } |
| |
| public static int toKernelConstantFromString(String s) { |
| for (IsolationLevel level : IsolationLevel.values()) { |
| for (String name : level._names) { |
| if (name.equalsIgnoreCase(s) || String.valueOf(level.toKernelConstant()).equals(s)) |
| return level.toKernelConstant(); |
| } |
| } |
| throw new IllegalArgumentException(s + " is not a valid name for " + IsolationLevel.class.getName()); |
| } |
| |
| @Override |
| public int convertToKernelConstant(String s) { |
| return IsolationLevel.toKernelConstantFromString(s); |
| } |
| |
| @Override |
| public int convertToKernelConstant(int i) { |
| return IsolationLevel.fromConnectionConstant(i).toKernelConstant(); |
| } |
| |
| } |