| /* |
| * 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.testng.Assert; |
| import org.testng.annotations.Test; |
| |
| import org.apache.datasketches.memory.Memory; |
| import org.apache.datasketches.tuple.arrayofdoubles.ArrayOfDoublesSetOperationBuilder; |
| import org.apache.datasketches.tuple.arrayofdoubles.ArrayOfDoublesSketch; |
| import org.apache.datasketches.tuple.arrayofdoubles.ArrayOfDoublesSketches; |
| import org.apache.datasketches.tuple.arrayofdoubles.ArrayOfDoublesUnion; |
| import org.apache.datasketches.tuple.arrayofdoubles.ArrayOfDoublesUpdatableSketch; |
| import org.apache.datasketches.tuple.arrayofdoubles.ArrayOfDoublesUpdatableSketchBuilder; |
| import org.apache.datasketches.SketchesReadOnlyException; |
| |
| @SuppressWarnings("javadoc") |
| public class ReadOnlyMemoryTest { |
| |
| @Test |
| public void wrapAndTryUpdatingSketch() { |
| ArrayOfDoublesUpdatableSketch sketch1 = new ArrayOfDoublesUpdatableSketchBuilder().build(); |
| sketch1.update(1, new double[] {1}); |
| ArrayOfDoublesUpdatableSketch sketch2 = (ArrayOfDoublesUpdatableSketch) |
| ArrayOfDoublesSketches.wrapSketch(Memory.wrap(sketch1.toByteArray())); |
| Assert.assertEquals(sketch2.getEstimate(), 1.0); |
| sketch2.toByteArray(); |
| boolean thrown = false; |
| try { |
| sketch2.update(2, new double[] {1}); |
| } catch (SketchesReadOnlyException e) { |
| thrown = true; |
| } |
| try { |
| sketch2.trim(); |
| } catch (SketchesReadOnlyException e) { |
| thrown = true; |
| } |
| Assert.assertTrue(thrown); |
| } |
| |
| @Test |
| public void heapifyAndUpdateSketch() { |
| ArrayOfDoublesUpdatableSketch sketch1 = new ArrayOfDoublesUpdatableSketchBuilder().build(); |
| sketch1.update(1, new double[] {1}); |
| // downcasting is not recommended, for testing only |
| ArrayOfDoublesUpdatableSketch sketch2 = (ArrayOfDoublesUpdatableSketch) |
| ArrayOfDoublesSketches.heapifySketch(Memory.wrap(sketch1.toByteArray())); |
| sketch2.update(2, new double[] {1}); |
| Assert.assertEquals(sketch2.getEstimate(), 2.0); |
| } |
| |
| @Test |
| public void wrapAndTryUpdatingUnionEstimationMode() { |
| int numUniques = 10000; |
| int key = 0; |
| ArrayOfDoublesUpdatableSketch sketch1 = new ArrayOfDoublesUpdatableSketchBuilder().build(); |
| for (int i = 0; i < numUniques; i++) { |
| sketch1.update(key++, new double[] {1}); |
| } |
| ArrayOfDoublesUnion union1 = new ArrayOfDoublesSetOperationBuilder().buildUnion(); |
| union1.update(sketch1); |
| ArrayOfDoublesUnion union2 = ArrayOfDoublesSketches.wrapUnion(Memory.wrap(union1.toByteArray())); |
| ArrayOfDoublesSketch resultSketch = union2.getResult(); |
| Assert.assertTrue(resultSketch.isEstimationMode()); |
| Assert.assertEquals(resultSketch.getEstimate(), numUniques, numUniques * 0.04); |
| |
| // make sure union update actually needs to modify the union |
| ArrayOfDoublesUpdatableSketch sketch2 = new ArrayOfDoublesUpdatableSketchBuilder().build(); |
| for (int i = 0; i < numUniques; i++) { |
| sketch2.update(key++, new double[] {1}); |
| } |
| |
| boolean thrown = false; |
| try { |
| union2.update(sketch2); |
| } catch (SketchesReadOnlyException e) { |
| thrown = true; |
| } |
| Assert.assertTrue(thrown); |
| } |
| |
| @Test |
| public void heapifyAndUpdateUnion() { |
| int numUniques = 10000; |
| int key = 0; |
| ArrayOfDoublesUpdatableSketch sketch1 = new ArrayOfDoublesUpdatableSketchBuilder().build(); |
| for (int i = 0; i < numUniques; i++) { |
| sketch1.update(key++, new double[] {1}); |
| } |
| ArrayOfDoublesUnion union1 = new ArrayOfDoublesSetOperationBuilder().buildUnion(); |
| union1.update(sketch1); |
| ArrayOfDoublesUnion union2 = ArrayOfDoublesSketches.heapifyUnion(Memory.wrap(union1.toByteArray())); |
| ArrayOfDoublesSketch resultSketch = union2.getResult(); |
| Assert.assertTrue(resultSketch.isEstimationMode()); |
| Assert.assertEquals(resultSketch.getEstimate(), numUniques, numUniques * 0.04); |
| |
| // make sure union update actually needs to modify the union |
| ArrayOfDoublesUpdatableSketch sketch2 = new ArrayOfDoublesUpdatableSketchBuilder().build(); |
| for (int i = 0; i < numUniques; i++) { |
| sketch2.update(key++, new double[] {1}); |
| } |
| union2.update(sketch2); |
| } |
| |
| } |