org.apache.datasketches.pig.frequencies

Class DataToFrequentStringsSketch

java.lang.Object

org.apache.pig.EvalFunc<org.apache.pig.data.Tuple>

org.apache.datasketches.pig.frequencies.DataToFrequentItemsSketch<String>

org.apache.datasketches.pig.frequencies.DataToFrequentStringsSketch

All Implemented Interfaces:

org.apache.pig.Accumulator<org.apache.pig.data.Tuple>, org.apache.pig.Algebraic

public class DataToFrequentStringsSketch
extends DataToFrequentItemsSketch<String>
implements org.apache.pig.Algebraic

This UDF creates a FrequentItemsSketch<String> from raw data. It supports all three ways: exec(), Accumulator and Algebraic.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DataToFrequentStringsSketch.Initial
static class	DataToFrequentStringsSketch.IntermediateFinal

Nested classes/interfaces inherited from class org.apache.pig.EvalFunc

org.apache.pig.EvalFunc.SchemaType

Field Summary

Fields inherited from class org.apache.pig.EvalFunc

log, pigLogger, reporter, returnType

Constructor Summary

Constructors

Constructor and Description
DataToFrequentStringsSketch(String sketchSize) Constructor

Method Summary

Modifier and Type	Method and Description
String	getFinal()
String	getInitial()
String	getIntermed()

Methods inherited from class org.apache.datasketches.pig.frequencies.DataToFrequentItemsSketch

accumulate, cleanup, exec, getValue

Methods inherited from class org.apache.pig.EvalFunc

allowCompileTimeCalculation, finish, getArgToFuncMapping, getCacheFiles, getInputSchema, getLoadCaster, getLogger, getPigLogger, getReporter, getReturnType, getSchemaName, getSchemaType, getShipFiles, isAsynchronous, needEndOfAllInputProcessing, outputSchema, progress, setEndOfAllInput, setInputSchema, setPigLogger, setReporter, setUDFContextSignature, warn

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DataToFrequentStringsSketch

public DataToFrequentStringsSketch(String sketchSize)

Constructor

Parameters:

sketchSize - String representation of sketch size

Method Detail

getInitial

public String getInitial()

Specified by:

getInitial in interface org.apache.pig.Algebraic

getIntermed

public String getIntermed()

Specified by:

getIntermed in interface org.apache.pig.Algebraic

getFinal

public String getFinal()

Specified by:

getFinal in interface org.apache.pig.Algebraic