| /* |
| * 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.tuple; |
| |
| import org.apache.pig.Algebraic; |
| |
| import com.yahoo.sketches.tuple.DoubleSummary; |
| import com.yahoo.sketches.tuple.DoubleSummaryDeserializer; |
| import com.yahoo.sketches.tuple.DoubleSummaryFactory; |
| import com.yahoo.sketches.tuple.DoubleSummarySetOperations; |
| |
| /** |
| * This UDF creates a Sketch<DoubleSummary> from raw data. |
| * It supports all three ways: exec(), Accumulator and Algebraic. |
| */ |
| public class DataToDoubleSummarySketch extends DataToSketch<Double, DoubleSummary> implements Algebraic { |
| /** |
| * Constructor with default sketch size and default mode (sum) |
| */ |
| public DataToDoubleSummarySketch() { |
| super(new DoubleSummaryFactory()); |
| } |
| |
| /** |
| * Constructor with default mode (sum) |
| * @param sketchSize String representation of sketch size |
| */ |
| public DataToDoubleSummarySketch(final String sketchSize) { |
| super(Integer.parseInt(sketchSize), new DoubleSummaryFactory()); |
| } |
| |
| /** |
| * Constructor |
| * @param sketchSize String representation of sketch size |
| * @param summaryMode String representation of mode (sum, min or max) |
| */ |
| public DataToDoubleSummarySketch(final String sketchSize, final String summaryMode) { |
| super(Integer.parseInt(sketchSize), new DoubleSummaryFactory(DoubleSummary.Mode.valueOf(summaryMode))); |
| } |
| |
| @Override |
| public String getInitial() { |
| return Initial.class.getName(); |
| } |
| |
| @Override |
| public String getIntermed() { |
| return IntermediateFinal.class.getName(); |
| } |
| |
| @Override |
| public String getFinal() { |
| return IntermediateFinal.class.getName(); |
| } |
| |
| public static class Initial extends AlgebraicInitial { |
| |
| /** |
| * Constructor wit default sketch size and default mode |
| */ |
| public Initial() {} |
| |
| /** |
| * Constructor for the initial pass of an Algebraic function. This will be passed the same |
| * constructor arguments as the original UDF. |
| * @param sketchSize String representation of sketch size |
| */ |
| public Initial(final String sketchSize) {} |
| |
| /** |
| * Constructor for the initial pass of an Algebraic function. This will be passed the same |
| * constructor arguments as the original UDF. |
| * @param sketchSize String representation of sketch size |
| * @param summaryMode String representation of mode (sum, min or max) |
| */ |
| public Initial(final String sketchSize, final String summaryMode) {} |
| |
| } |
| |
| public static class IntermediateFinal |
| extends DataToSketchAlgebraicIntermediateFinal<Double, DoubleSummary> { |
| |
| /** |
| * Constructor for the intermediate and final passes of an Algebraic function. |
| * Default sketch size and default mode |
| */ |
| public IntermediateFinal() { |
| super(new DoubleSummaryFactory(), new DoubleSummarySetOperations(), new DoubleSummaryDeserializer()); |
| } |
| |
| /** |
| * Constructor for the intermediate and final passes of an Algebraic function. This will be |
| * passed the same constructor arguments as the original UDF. |
| * @param sketchSize String representation of sketch size |
| */ |
| public IntermediateFinal(final String sketchSize) { |
| super(Integer.parseInt(sketchSize), new DoubleSummaryFactory(), new DoubleSummarySetOperations(), |
| new DoubleSummaryDeserializer()); |
| } |
| |
| /** |
| * Constructor for the intermediate and final passes of an Algebraic function. This will be |
| * passed the same constructor arguments as the original UDF. |
| * @param sketchSize String representation of sketch size |
| * @param summaryMode String representation of mode (sum, min or max) |
| */ |
| public IntermediateFinal(final String sketchSize, final String summaryMode) { |
| super(Integer.parseInt(sketchSize), new DoubleSummaryFactory(DoubleSummary.Mode.valueOf(summaryMode)), |
| new DoubleSummarySetOperations(DoubleSummary.Mode.valueOf(summaryMode)), |
| new DoubleSummaryDeserializer()); |
| } |
| |
| } |
| |
| } |