| /* |
| * 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; |
| |
| /** |
| * There are seven different preamble formats (8 combinations) that determine the layout of the |
| * <i>HiField</i> variables after the first 8 bytes of the preamble. |
| * Do not change the order. |
| */ |
| enum Format { |
| EMPTY_MERGED, |
| EMPTY_HIP, |
| SPARSE_HYBRID_MERGED, |
| SPARSE_HYBRID_HIP, |
| PINNED_SLIDING_MERGED_NOSV, |
| PINNED_SLIDING_HIP_NOSV, |
| PINNED_SLIDING_MERGED, |
| PINNED_SLIDING_HIP; |
| |
| private static Format[] fmtArr = Format.class.getEnumConstants(); |
| |
| /** |
| * Returns the Format given its enum ordinal |
| * @param ordinal the given enum ordinal |
| * @return the Format given its enum ordinal |
| */ |
| static Format ordinalToFormat(final int ordinal) { |
| return fmtArr[ordinal]; |
| } |
| |
| } //end enum Format |
