| /* |
| * 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.sysds.runtime.compress.colgroup.mapping; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| import java.util.BitSet; |
| |
| import org.apache.commons.lang.NotImplementedException; |
| import org.apache.sysds.runtime.compress.colgroup.IMapToDataGroup; |
| import org.apache.sysds.runtime.compress.colgroup.dictionary.ADictionary; |
| import org.apache.sysds.runtime.compress.colgroup.mapping.MapToFactory.MAP_TYPE; |
| |
| public class MapToZero extends AMapToData { |
| |
| private static final long serialVersionUID = -8065234231282619923L; |
| |
| private final int _size; |
| |
| public MapToZero(int size) { |
| super(1); |
| _size = size; |
| } |
| |
| @Override |
| public MAP_TYPE getType() { |
| return MapToFactory.MAP_TYPE.ZERO; |
| } |
| |
| @Override |
| public int getIndex(int n) { |
| return 0; |
| } |
| |
| @Override |
| public void fill(int v) { |
| // do nothing |
| } |
| |
| @Override |
| public long getInMemorySize() { |
| return getInMemorySize(0); |
| } |
| |
| public static long getInMemorySize(int dataLength) { |
| return 16 + 4; |
| } |
| |
| @Override |
| public long getExactSizeOnDisk() { |
| return 1 + 4; |
| } |
| |
| @Override |
| public void set(int n, int v) { |
| // do nothing |
| } |
| |
| @Override |
| public int setAndGet(int n, int v) { |
| return 0; |
| } |
| |
| @Override |
| public int size() { |
| return _size; |
| } |
| |
| @Override |
| public void replace(int v, int r) { |
| // do nothing |
| } |
| |
| @Override |
| public void write(DataOutput out) throws IOException { |
| out.writeByte(MAP_TYPE.ZERO.ordinal()); |
| out.writeInt(_size); |
| } |
| |
| protected static MapToZero readFields(DataInput in) throws IOException { |
| return new MapToZero(in.readInt()); |
| } |
| |
| @Override |
| public int getUpperBoundValue() { |
| return 0; |
| } |
| |
| @Override |
| public int[] getCounts(int[] ret) { |
| final int sz = size(); |
| ret[0] = sz; |
| return ret; |
| } |
| |
| @Override |
| public void preAggregateDDC_DDCSingleCol(AMapToData tm, double[] td, double[] v) { |
| final int sz = size(); |
| for(int r = 0; r < sz; r++) |
| v[0] += td[tm.getIndex(r)]; |
| |
| } |
| |
| @Override |
| public void preAggregateDDC_DDCMultiCol(AMapToData tm, ADictionary td, double[] v, int nCol) { |
| final int sz = size(); |
| for(int r = 0; r < sz; r++) |
| td.addToEntry(v, tm.getIndex(r), 0, nCol); |
| } |
| |
| @Override |
| public void copyInt(int[] d) { |
| // do nothing |
| } |
| |
| @Override |
| public void copyBit(BitSet d) { |
| // do nothing |
| } |
| |
| @Override |
| public AMapToData resize(int unique) { |
| // do nothing |
| return this; |
| } |
| |
| @Override |
| public int countRuns() { |
| return 1; |
| } |
| |
| @Override |
| public AMapToData slice(int l, int u) { |
| return new MapToZero(u - l); |
| } |
| |
| @Override |
| public AMapToData append(AMapToData t) { |
| if(t instanceof MapToZero) |
| return new MapToZero(_size + t.size()); |
| else |
| throw new NotImplementedException("Not implemented append on Bit map different type"); |
| } |
| |
| @Override |
| public AMapToData appendN(IMapToDataGroup[] d) { |
| int p = 0; // pointer |
| for(IMapToDataGroup gd : d) |
| p += gd.getMapToData().size(); |
| return new MapToZero(p); |
| } |
| } |