| /* |
| * 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.tuple.arrayofdoubles; |
| |
| /** |
| * Top level compact tuple sketch of type ArrayOfDoubles. Compact sketches are never created |
| * directly. They are created as a result of the compact() method on a QuickSelectSketch |
| * or the getResult() method of a set operation like Union, Intersection or AnotB. |
| * Compact sketch consists of a compact list (i.e. no intervening spaces) of hash values, |
| * corresponding list of double values, and a value for theta. The lists may or may |
| * not be ordered. A compact sketch is read-only. |
| */ |
| public abstract class ArrayOfDoublesCompactSketch extends ArrayOfDoublesSketch { |
| |
| static final byte serialVersionUID = 1; |
| |
| // Layout of retained entries: |
| // Long || Start Byte Adr: |
| // Adr: |
| // || 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
| // 3 ||-----------------------------------|----------Retained Entries------------| |
| |
| static final int EMPTY_SIZE = 16; |
| static final int RETAINED_ENTRIES_INT = 16; |
| // 4 bytes of padding for 8 byte alignment |
| static final int ENTRIES_START = 24; |
| |
| ArrayOfDoublesCompactSketch(final int numValues) { |
| super(numValues); |
| } |
| } |