org.apache.hadoop.hive.ql.udf

Class UDFSign

java.lang.Object

org.apache.hadoop.hive.ql.exec.UDF

org.apache.hadoop.hive.ql.udf.UDFSign

public class UDFSign
extends UDF

Constructor Summary

Constructors

Constructor and Description
UDFSign()

Method Summary

Modifier and Type	Method and Description
DoubleWritable	evaluate(DoubleWritable a) Take sign of a
org.apache.hadoop.io.IntWritable	evaluate(org.apache.hadoop.hive.serde2.io.HiveDecimalWritable decWritable) Get the sign of the decimal input
DoubleWritable	evaluate(org.apache.hadoop.io.LongWritable a)

Methods inherited from class org.apache.hadoop.hive.ql.exec.UDF

getRequiredFiles, getRequiredJars, getResolver, setResolver

Methods inherited from class java.lang.Object

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

Constructor Detail

UDFSign

public UDFSign()

Method Detail

evaluate

public DoubleWritable evaluate(DoubleWritable a)

Take sign of a

evaluate

public DoubleWritable evaluate(org.apache.hadoop.io.LongWritable a)

evaluate

public org.apache.hadoop.io.IntWritable evaluate(org.apache.hadoop.hive.serde2.io.HiveDecimalWritable decWritable)

Get the sign of the decimal input

Parameters:

dec - decimal input

Returns:

-1, 0, or 1 representing the sign of the input decimal