| /* |
| * 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; |
| |
| /** |
| * @author Jon Malkin |
| */ |
| class HeapDoublesSketchAccessor extends DoublesSketchAccessor { |
| HeapDoublesSketchAccessor(final DoublesSketch ds, |
| final boolean forceSize, |
| final int level) { |
| super(ds, forceSize, level); |
| assert !ds.isDirect(); |
| } |
| |
| @Override |
| DoublesSketchAccessor copyAndSetLevel(final int level) { |
| return new HeapDoublesSketchAccessor(ds_, forceSize_, level); |
| } |
| |
| @Override |
| double get(final int index) { |
| assert index >= 0 && index < numItems_; |
| assert n_ == ds_.getN(); |
| |
| return ds_.getCombinedBuffer()[offset_ + index]; |
| } |
| |
| @Override |
| double set(final int index, final double value) { |
| assert index >= 0 && index < numItems_; |
| assert n_ == ds_.getN(); |
| |
| final int idxOffset = offset_ + index; |
| final double oldVal = ds_.getCombinedBuffer()[idxOffset]; |
| ds_.getCombinedBuffer()[idxOffset] = value; |
| |
| return oldVal; |
| } |
| |
| @Override |
| double[] getArray(final int fromIdx, final int numItems) { |
| final int stIdx = offset_ + fromIdx; |
| return Arrays.copyOfRange(ds_.getCombinedBuffer(), stIdx, stIdx + numItems); |
| } |
| |
| @Override |
| void putArray(final double[] srcArray, final int srcIndex, |
| final int dstIndex, final int numItems) { |
| final int tgtIdx = offset_ + dstIndex; |
| System.arraycopy(srcArray, srcIndex, ds_.getCombinedBuffer(), tgtIdx, numItems); |
| } |
| |
| @Override |
| void sort() { |
| assert currLvl_ == BB_LVL_IDX; |
| |
| if (!ds_.isCompact()) { // compact sketch is already sorted; not an error but a no-op |
| Arrays.sort(ds_.getCombinedBuffer(), offset_, offset_ + numItems_); |
| } |
| } |
| } |