| /* |
| * 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.quantiles; |
| |
| import java.util.Arrays; |
| |
| import org.apache.datasketches.memory.WritableMemory; |
| |
| /** |
| * @author Jon Malkin |
| */ |
| class DirectDoublesSketchAccessor extends DoublesSketchAccessor { |
| DirectDoublesSketchAccessor(final DoublesSketch ds, |
| final boolean forceSize, |
| final int level) { |
| super(ds, forceSize, level); |
| assert ds.isDirect(); |
| } |
| |
| @Override |
| DoublesSketchAccessor copyAndSetLevel(final int level) { |
| return new DirectDoublesSketchAccessor(ds_, forceSize_, level); |
| } |
| |
| @Override |
| double get(final int index) { |
| assert index >= 0 && index < numItems_; |
| assert n_ == ds_.getN(); |
| |
| final int idxOffset = offset_ + (index << 3); |
| return ds_.getMemory().getDouble(idxOffset); |
| } |
| |
| @Override |
| double set(final int index, final double value) { |
| assert index >= 0 && index < numItems_; |
| assert n_ == ds_.getN(); |
| assert !ds_.isCompact(); // can't write to a compact sketch |
| |
| final int idxOffset = offset_ + (index << 3); |
| final WritableMemory mem = ds_.getMemory(); |
| final double oldVal = mem.getDouble(idxOffset); |
| mem.putDouble(idxOffset, value); |
| return oldVal; |
| } |
| |
| @Override |
| double[] getArray(final int fromIdx, final int numItems) { |
| final double[] dstArray = new double[numItems]; |
| final int offsetBytes = offset_ + (fromIdx << 3); |
| ds_.getMemory().getDoubleArray(offsetBytes, dstArray, 0, numItems); |
| return dstArray; |
| } |
| |
| @Override |
| void putArray(final double[] srcArray, final int srcIndex, |
| final int dstIndex, final int numItems) { |
| assert !ds_.isCompact(); // can't write to compact sketch |
| final int offsetBytes = offset_ + (dstIndex << 3); |
| ds_.getMemory().putDoubleArray(offsetBytes, srcArray, srcIndex, numItems); |
| } |
| |
| @Override |
| void sort() { |
| assert currLvl_ == BB_LVL_IDX; |
| |
| final double[] tmpBuffer = new double[numItems_]; |
| final WritableMemory mem = ds_.getMemory(); |
| mem.getDoubleArray(offset_, tmpBuffer, 0, numItems_); |
| Arrays.sort(tmpBuffer, 0, numItems_); |
| mem.putDoubleArray(offset_, tmpBuffer, 0, numItems_); |
| } |
| |
| } |