brickhouse.udf.date
Class DateRangeUDTF

java.lang.Object
  org.apache.hadoop.hive.ql.udf.generic.GenericUDTF
      brickhouse.udf.date.DateRangeUDTF

public class DateRangeUDTF
extends org.apache.hadoop.hive.ql.udf.generic.GenericUDTF

DateRange is a UDTF for generating days from start date to end_date, inclusively. This might be useful in cases where one needed to have a row for every day in the range ... select t1.id, t1.date, coalesce( t2.val, 0.0 ) as val from ( select id, rng.date from tab1 lateral view( date_range( tab1.start_date, tab1.end_date ) ) rng as date, index ) t1 left outer join ( select val from tab2 ) t2 on ( t1.id = t2.id and t1.date = t2.date );

Constructor Summary

DateRangeUDTF()

Method Summary

void	close()
org.apache.hadoop.hive.serde2.objectinspector.StructObjectInspector	initialize(org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector[] argOIs)
void	process(Object[] args)

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

forward, setCollector

Methods inherited from class java.lang.Object

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

Constructor Detail

DateRangeUDTF

public DateRangeUDTF()

Method Detail

initialize

public org.apache.hadoop.hive.serde2.objectinspector.StructObjectInspector initialize(org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector[] argOIs)
                                                                               throws org.apache.hadoop.hive.ql.exec.UDFArgumentException

Specified by:

initialize in class org.apache.hadoop.hive.ql.udf.generic.GenericUDTF

Throws:

org.apache.hadoop.hive.ql.exec.UDFArgumentException

process

public void process(Object[] args)
             throws org.apache.hadoop.hive.ql.metadata.HiveException

Specified by:

process in class org.apache.hadoop.hive.ql.udf.generic.GenericUDTF

Throws:

org.apache.hadoop.hive.ql.metadata.HiveException

close

public void close()
           throws org.apache.hadoop.hive.ql.metadata.HiveException

Specified by:

close in class org.apache.hadoop.hive.ql.udf.generic.GenericUDTF

Throws:

org.apache.hadoop.hive.ql.metadata.HiveException