| /* |
| * 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.geode.internal.cache; |
| |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| |
| public class BucketSetHelper { |
| public static int get(int[] bucketSet, int index) { |
| return bucketSet[index + 1]; |
| } |
| |
| public static int length(int[] bucketSet) { |
| return null == bucketSet || bucketSet.length < 2 ? 0 : bucketSet[0]; |
| } |
| |
| public static void add(int[] bucketSet, int value) { |
| int index = bucketSet[0] + 1; |
| bucketSet[index] = value; |
| bucketSet[0] = index; |
| } |
| |
| public static Set<Integer> toSet(int[] bucketSet) { |
| Set<Integer> resultSet; |
| int arrayLength = length(bucketSet); |
| if (arrayLength > 0) { |
| resultSet = new HashSet(arrayLength); |
| for (int i = 1; i <= arrayLength; i++) { |
| resultSet.add(bucketSet[i]); |
| } |
| } else { |
| resultSet = new HashSet(); |
| } |
| return resultSet; |
| } |
| |
| public static int[] fromSet(Set<Integer> bucketSet) { |
| int setSize = bucketSet.size(); |
| int[] resultArray = new int[setSize + 1]; |
| resultArray[0] = setSize; |
| |
| if (setSize > 0) { |
| int i = 1; |
| for (Integer element : bucketSet) { |
| resultArray[i] = element; |
| i++; |
| } |
| } |
| return resultArray; |
| } |
| |
| } |