datafu.pig.bags

Class CountDistinctUpTo.Intermediate

java.lang.Object

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

datafu.pig.bags.CountDistinctUpTo.Intermediate

Enclosing class:

CountDistinctUpTo

public static class CountDistinctUpTo.Intermediate
extends org.apache.pig.EvalFunc<org.apache.pig.data.Tuple>

Receives a bag of bags, each containing a single tuple with the original input schema T Outputs a bag of distinct tuples each with the original schema T:

 
 {({T}),({T}),({T})} -> ({T, T, T})
 
 

or if the maximum is reached, null:

 
 {({T}),({T}),({T}) ..} -> (null)
 
 

Nested Class Summary

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
Intermediate()
Intermediate(java.lang.String maxAmount)

Method Summary

Modifier and Type	Method and Description
org.apache.pig.data.Tuple	exec(org.apache.pig.data.Tuple input)

Methods inherited from class org.apache.pig.EvalFunc

allowCompileTimeCalculation, finish, getArgToFuncMapping, getCacheFiles, getInputSchema, getLogger, getPigLogger, getReporter, getReturnType, getSchemaName, getSchemaType, getShipFiles, isAsynchronous, outputSchema, progress, 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

Intermediate

public Intermediate()

Intermediate

public Intermediate(java.lang.String maxAmount)

Method Detail

exec

public org.apache.pig.data.Tuple exec(org.apache.pig.data.Tuple input)
                               throws java.io.IOException

Specified by:

exec in class org.apache.pig.EvalFunc<org.apache.pig.data.Tuple>

Throws:

java.io.IOException