| /* |
| * 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 org.apache.openjpa.jdbc.kernel.LRSSizes; |
| import org.apache.openjpa.kernel.FetchConfiguration; |
| import org.apache.openjpa.persistence.OpenJPAEnum; |
| |
| /** |
| * Algorithm to use for computing the size of an LRS relation. |
| * |
| * @since 1.0.0 |
| * @published |
| */ |
| public enum LRSSizeAlgorithm implements OpenJPAEnum<Enum<?>> { |
| UNKNOWN(LRSSizes.SIZE_UNKNOWN, "unknown"), |
| LAST(LRSSizes.SIZE_LAST, "last"), |
| QUERY(LRSSizes.SIZE_QUERY, "query"); |
| |
| private final int lrsConstant; |
| private final String[] _names; |
| |
| private LRSSizeAlgorithm(int value, String...aliases) { |
| lrsConstant = value; |
| _names = aliases; |
| } |
| |
| @Override |
| public int toKernelConstant() { |
| return lrsConstant; |
| } |
| |
| static LRSSizeAlgorithm fromKernelConstant(int kernelConstant) { |
| switch (kernelConstant) { |
| case LRSSizes.SIZE_UNKNOWN: |
| return UNKNOWN; |
| |
| case LRSSizes.SIZE_LAST: |
| return LAST; |
| |
| case LRSSizes.SIZE_QUERY: |
| return QUERY; |
| |
| default: |
| throw new IllegalArgumentException(kernelConstant + ""); |
| } |
| } |
| |
| @Override |
| public int convertToKernelConstant(String s) { |
| return LRSSizeAlgorithm.toKernelConstantFromString(s); |
| } |
| |
| @Override |
| public int convertToKernelConstant(int i) { |
| try { |
| if (i == FetchConfiguration.DEFAULT) |
| return i; |
| return LRSSizeAlgorithm.values()[i].ordinal(); |
| } catch (ArrayIndexOutOfBoundsException e) { |
| throw new IllegalArgumentException(i + " is invalid value for LRSSize Algorithm"); |
| } |
| } |
| |
| public static int toKernelConstantFromString(String s) { |
| for (LRSSizeAlgorithm level : LRSSizeAlgorithm.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()); |
| } |
| |
| |
| } |