| /* |
| * 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.datasketches.cpc; |
| |
| /** |
| * Note: except for brief transitional moments, these sketches always obey the following strict |
| * mapping between the flavor of a sketch and the number of coupons that it has collected. |
| * @author Lee Rhodes |
| * @author Kevin Lang |
| */ |
| enum Flavor { |
| EMPTY, // 0 == C < 1 |
| SPARSE, // 1 <= C < 3K/32 |
| HYBRID, // 3K/32 <= C < K/2 |
| PINNED, // K/2 <= C < 27K/8 [NB: 27/8 = 3 + 3/8] |
| SLIDING; // 27K/8 <= C |
| |
| private static Flavor[] fmtArr = Flavor.class.getEnumConstants(); |
| |
| /** |
| * Returns the Flavor given its enum ordinal |
| * @param ordinal the given enum ordinal |
| * @return the Flavor given its enum ordinal |
| */ |
| static Flavor ordinalToFlavor(final int ordinal) { |
| return fmtArr[ordinal]; |
| } |
| |
| } |