| /* |
| * 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; |
| |
| import org.apache.datasketches.memory.WritableMemory; |
| |
| /** |
| * Computes a set difference of two tuple sketches of type ArrayOfDoubles |
| */ |
| public abstract class ArrayOfDoublesAnotB { |
| |
| ArrayOfDoublesAnotB() {} |
| |
| /** |
| * Perform A-and-not-B set operation on the two given sketches. |
| * A null sketch is interpreted as an empty sketch. |
| * This is not an accumulating update. Calling update() more than once |
| * without calling getResult() will discard the result of previous update() |
| * |
| * @param a The incoming sketch for the first argument |
| * @param b The incoming sketch for the second argument |
| */ |
| public abstract void update(ArrayOfDoublesSketch a, ArrayOfDoublesSketch b); |
| |
| /** |
| * Gets the result of this operation in the form of a ArrayOfDoublesCompactSketch |
| * @return compact sketch representing the result of the operation |
| */ |
| public abstract ArrayOfDoublesCompactSketch getResult(); |
| |
| /** |
| * Gets the result of this operation in the form of a ArrayOfDoublesCompactSketch |
| * @param mem memory for the result (can be null) |
| * @return compact sketch representing the result of the operation (off-heap if memory is |
| * provided) |
| */ |
| public abstract ArrayOfDoublesCompactSketch getResult(WritableMemory mem); |
| |
| } |