| /* |
| * 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 static org.apache.datasketches.Util.LS; |
| |
| import org.apache.datasketches.SketchesArgumentException; |
| import org.apache.datasketches.SketchesReadOnlyException; |
| import org.apache.datasketches.memory.Memory; |
| import org.apache.datasketches.memory.WritableMemory; |
| |
| /** |
| * Union operation for on-heap. |
| * |
| * @author Lee Rhodes |
| * @author Kevin Lang |
| */ |
| class DoublesUnionImplR extends DoublesUnion { |
| int maxK_; |
| UpdateDoublesSketch gadget_ = null; |
| |
| DoublesUnionImplR(final int maxK) { |
| maxK_ = maxK; |
| } |
| |
| /** |
| * Returns a read-only Union object that wraps off-heap data structure of the given memory |
| * image of a non-compact DoublesSketch. The data structures of the Union remain off-heap. |
| * |
| * @param mem A memory image of a non-compact DoublesSketch to be used as the data |
| * structure for the union and will be modified. |
| * @return a Union object |
| */ |
| static DoublesUnionImplR wrapInstance(final Memory mem) { |
| final DirectUpdateDoublesSketchR sketch = DirectUpdateDoublesSketchR.wrapInstance(mem); |
| final int k = sketch.getK(); |
| final DoublesUnionImplR union = new DoublesUnionImplR(k); |
| union.maxK_ = k; |
| union.gadget_ = sketch; |
| return union; |
| } |
| |
| @Override |
| public void update(final DoublesSketch sketchIn) { |
| throw new SketchesReadOnlyException("Call to update() on read-only Union"); |
| } |
| |
| @Override |
| public void update(final Memory mem) { |
| throw new SketchesReadOnlyException("Call to update() on read-only Union"); |
| } |
| |
| @Override |
| public void update(final double dataItem) { |
| throw new SketchesReadOnlyException("Call to update() on read-only Union"); |
| } |
| |
| @Override |
| public byte[] toByteArray() { |
| if (gadget_ == null) { |
| return DoublesSketch.builder().setK(maxK_).build().toByteArray(); |
| } |
| return gadget_.toByteArray(); |
| } |
| |
| @Override |
| public UpdateDoublesSketch getResult() { |
| if (gadget_ == null) { |
| return HeapUpdateDoublesSketch.newInstance(maxK_); |
| } |
| return DoublesUtil.copyToHeap(gadget_); //can't have any externally owned handles. |
| } |
| |
| @Override |
| public UpdateDoublesSketch getResult(final WritableMemory dstMem) { |
| final long memCapBytes = dstMem.getCapacity(); |
| if (gadget_ == null) { |
| if (memCapBytes < DoublesSketch.getUpdatableStorageBytes(0, 0)) { |
| throw new SketchesArgumentException("Insufficient capacity for result: " + memCapBytes); |
| } |
| return DirectUpdateDoublesSketch.newInstance(maxK_, dstMem); |
| } |
| |
| gadget_.putMemory(dstMem, false); |
| return DirectUpdateDoublesSketch.wrapInstance(dstMem); |
| } |
| |
| @Override |
| public UpdateDoublesSketch getResultAndReset() { |
| throw new SketchesReadOnlyException("Call to getResultAndReset() on read-only Union"); |
| } |
| |
| @Override |
| public void reset() { |
| throw new SketchesReadOnlyException("Call to reset() on read-only Union"); |
| } |
| |
| @Override |
| public boolean isEmpty() { |
| return (gadget_ == null) || gadget_.isEmpty(); |
| } |
| |
| @Override |
| public boolean isDirect() { |
| return (gadget_ != null) && gadget_.isDirect(); |
| } |
| |
| @Override |
| public int getMaxK() { |
| return maxK_; |
| } |
| |
| @Override |
| public int getEffectiveK() { |
| return (gadget_ != null) ? gadget_.getK() : maxK_; |
| } |
| |
| @Override |
| public String toString() { |
| return toString(true, false); |
| } |
| |
| @Override |
| public String toString(final boolean sketchSummary, final boolean dataDetail) { |
| final StringBuilder sb = new StringBuilder(); |
| final String thisSimpleName = this.getClass().getSimpleName(); |
| final int maxK = getMaxK(); |
| final String kStr = String.format("%,d", maxK); |
| sb.append(Util.LS).append("### Quantiles ").append(thisSimpleName).append(LS); |
| sb.append(" maxK : ").append(kStr); |
| if (gadget_ == null) { |
| sb.append(HeapUpdateDoublesSketch.newInstance(maxK_).toString()); |
| return sb.toString(); |
| } |
| sb.append(gadget_.toString(sketchSummary, dataDetail)); |
| return sb.toString(); |
| } |
| |
| @Override |
| public boolean isSameResource(final Memory that) { |
| return (gadget_ == null) ? false : gadget_.isSameResource(that); |
| } |
| |
| } |