| /* |
| * Copyright 2016, Yahoo! Inc. |
| * Licensed under the terms of the Apache License 2.0. See LICENSE file at the project root for terms. |
| */ |
| |
| package com.yahoo.sketches.pig.quantiles; |
| |
| import java.util.Comparator; |
| |
| import com.yahoo.sketches.ArrayOfItemsSerDe; |
| import com.yahoo.sketches.ArrayOfStringsSerDe; |
| |
| /** |
| * Creates an ItemsSketch<String> from raw data. |
| * It supports all three ways: exec(), Accumulator and Algebraic. |
| */ |
| public class DataToStringsSketch extends DataToItemsSketch<String> { |
| |
| private static final Comparator<String> COMPARATOR = Comparator.naturalOrder(); |
| private static final ArrayOfItemsSerDe<String> SER_DE = new ArrayOfStringsSerDe(); |
| |
| public DataToStringsSketch() { |
| super(0, COMPARATOR, SER_DE); |
| } |
| |
| public DataToStringsSketch(final String kStr) { |
| super(Integer.parseInt(kStr), COMPARATOR, SER_DE); |
| } |
| |
| // ALGEBRAIC INTERFACE |
| |
| @Override |
| public String getInitial() { |
| return DataToItemsSketchInitial.class.getName(); |
| } |
| |
| @Override |
| public String getIntermed() { |
| return DataToStringsSketchIntermediateFinal.class.getName(); |
| } |
| |
| @Override |
| public String getFinal() { |
| return DataToStringsSketchIntermediateFinal.class.getName(); |
| } |
| |
| public static class DataToStringsSketchIntermediateFinal |
| extends DataToItemsSketchIntermediateFinal<String> { |
| |
| public DataToStringsSketchIntermediateFinal() { |
| super(0, COMPARATOR, SER_DE); |
| } |
| |
| public DataToStringsSketchIntermediateFinal(final String kStr) { |
| super(Integer.parseInt(kStr), COMPARATOR, SER_DE); |
| } |
| |
| } |
| |
| } |