brickhouse.udf.collect
Class MultiDayCounterUDAF

java.lang.Object
  org.apache.hadoop.hive.ql.udf.generic.AbstractGenericUDAFResolver
      brickhouse.udf.collect.MultiDayCounterUDAF

All Implemented Interfaces:

org.apache.hadoop.hive.ql.udf.generic.GenericUDAFResolver, org.apache.hadoop.hive.ql.udf.generic.GenericUDAFResolver2

public class MultiDayCounterUDAF
extends org.apache.hadoop.hive.ql.udf.generic.AbstractGenericUDAFResolver

Count and count uniques for several day periods ( i.e produce 1, 7 and 30 counts for various events)

Input is a YYYYMMDD representation of the date counts are being generated, a date representation of the date associated with the events, a bigint of the event count for that day period, an array of uniques for that count (or a sketch set for those uniques), and an array of ints representing the dates being counted over ( ie. [1,7,30] ).

Output is a array of structs containing the num of days counted, the sum of events over that date

Nested Class Summary

static class

MultiDayCounterUDAF.MultiDayAggUDAFEvaluator

Constructor Summary

MultiDayCounterUDAF()

Method Summary

org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator

getEvaluator(org.apache.hadoop.hive.serde2.typeinfo.TypeInfo[] parameters) Parameters are event date, event count, event uniques, asof date, period array ,

Methods inherited from class org.apache.hadoop.hive.ql.udf.generic.AbstractGenericUDAFResolver

getEvaluator

Methods inherited from class java.lang.Object

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

Constructor Detail

MultiDayCounterUDAF

public MultiDayCounterUDAF()

Method Detail

getEvaluator

public org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator getEvaluator(org.apache.hadoop.hive.serde2.typeinfo.TypeInfo[] parameters)
                                                                        throws org.apache.hadoop.hive.ql.parse.SemanticException

Parameters are event date, event count, event uniques, asof date, period array ,

Specified by:

getEvaluator in interface org.apache.hadoop.hive.ql.udf.generic.GenericUDAFResolver

Overrides:

getEvaluator in class org.apache.hadoop.hive.ql.udf.generic.AbstractGenericUDAFResolver

Throws:

org.apache.hadoop.hive.ql.parse.SemanticException