| /* |
| * 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; |
| |
| import java.util.Locale; |
| import javax.persistence.LockModeType; |
| |
| import org.apache.openjpa.kernel.FetchConfiguration; |
| import org.apache.openjpa.kernel.MixedLockLevels; |
| |
| /** |
| * Helper methods translate between JPA-defined lock mode and OpenJPA |
| * internal lock levels. |
| * |
| * @author Albert Lee |
| * @since 2.0.0 |
| */ |
| public class MixedLockLevelsHelper implements HintValueConverter { |
| /** |
| * Translates javax.persistence LockModeType to internal lock level. |
| */ |
| public static int toLockLevel(LockModeType mode) { |
| if (mode == null || mode == LockModeType.NONE) |
| return MixedLockLevels.LOCK_NONE; |
| if (mode == LockModeType.READ) |
| return MixedLockLevels.LOCK_READ; |
| if (mode == LockModeType.OPTIMISTIC) |
| return MixedLockLevels.LOCK_OPTIMISTIC; |
| if (mode == LockModeType.WRITE) |
| return MixedLockLevels.LOCK_WRITE; |
| if (mode == LockModeType.OPTIMISTIC_FORCE_INCREMENT) |
| return MixedLockLevels.LOCK_OPTIMISTIC_FORCE_INCREMENT; |
| if (mode == LockModeType.PESSIMISTIC_READ) |
| return MixedLockLevels.LOCK_PESSIMISTIC_READ; |
| if (mode == LockModeType.PESSIMISTIC_WRITE) |
| return MixedLockLevels.LOCK_PESSIMISTIC_WRITE; |
| return MixedLockLevels.LOCK_PESSIMISTIC_FORCE_INCREMENT; |
| } |
| |
| public static int toLockLevel(int mode) { |
| switch (mode) { |
| case MixedLockLevels.LOCK_OPTIMISTIC: |
| case MixedLockLevels.LOCK_OPTIMISTIC_FORCE_INCREMENT: |
| case MixedLockLevels.LOCK_PESSIMISTIC_FORCE_INCREMENT: |
| case MixedLockLevels.LOCK_PESSIMISTIC_READ: |
| case MixedLockLevels.LOCK_PESSIMISTIC_WRITE: |
| case MixedLockLevels.LOCK_NONE: |
| case MixedLockLevels.LOCK_READ: |
| case MixedLockLevels.LOCK_WRITE: |
| case FetchConfiguration.DEFAULT: |
| return mode; |
| default: |
| throw new IllegalArgumentException("Unknown lock level " + mode); |
| } |
| } |
| |
| |
| /** |
| * Translates internal lock level to javax.persistence LockModeType. |
| */ |
| public static LockModeType fromLockLevel(int level) { |
| if (level < MixedLockLevels.LOCK_READ) |
| return LockModeType.NONE; |
| if (level < MixedLockLevels.LOCK_OPTIMISTIC) |
| return LockModeType.READ; |
| if (level < MixedLockLevels.LOCK_WRITE) |
| return LockModeType.OPTIMISTIC; |
| if (level < MixedLockLevels.LOCK_OPTIMISTIC_FORCE_INCREMENT) |
| return LockModeType.WRITE; |
| if (level < MixedLockLevels.LOCK_PESSIMISTIC_READ) |
| return LockModeType.OPTIMISTIC_FORCE_INCREMENT; |
| if (level < MixedLockLevels.LOCK_PESSIMISTIC_WRITE) |
| return LockModeType.PESSIMISTIC_READ; |
| if (level < MixedLockLevels.LOCK_PESSIMISTIC_FORCE_INCREMENT) |
| return LockModeType.PESSIMISTIC_WRITE; |
| return LockModeType.PESSIMISTIC_FORCE_INCREMENT; |
| } |
| |
| public boolean canConvert(Class<?> type) { |
| return type == LockModeType.class || type == String.class || type == Integer.class || type == int.class; |
| } |
| |
| public Object convert(Object original) { |
| if (original instanceof LockModeType) |
| return MixedLockLevelsHelper.toLockLevel((LockModeType)original); |
| if (original instanceof String) { |
| try { |
| int value = Integer.parseInt(original.toString()); |
| return MixedLockLevelsHelper.toLockLevel(value); |
| } catch (NumberFormatException nfe) { |
| if ("none".equalsIgnoreCase(original.toString())) { |
| return MixedLockLevels.LOCK_NONE; |
| } |
| return MixedLockLevelsHelper.toLockLevel( |
| LockModeType.valueOf(original.toString().toUpperCase(Locale.ENGLISH).replace('-', '_'))); |
| } |
| } |
| if (original instanceof Integer) { |
| return MixedLockLevelsHelper.toLockLevel((Integer)original); |
| } |
| |
| throw new IllegalArgumentException("can not convert " + original + " of " + original.getClass()); |
| } |
| } |