org.apache.hadoop.hive.ql.udf
Class UDFYear

java.lang.Object
  org.apache.hadoop.hive.ql.exec.UDF
      org.apache.hadoop.hive.ql.udf.UDFYear

public class UDFYear
extends UDF

UDFYear.

Constructor Summary

UDFYear()

Method Summary

org.apache.hadoop.io.IntWritable	evaluate(org.apache.hadoop.io.Text dateString) Get the year from a date string.
org.apache.hadoop.io.IntWritable	evaluate(TimestampWritable t)

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

UDFYear

public UDFYear()

Method Detail

evaluate

public org.apache.hadoop.io.IntWritable evaluate(org.apache.hadoop.io.Text dateString)

Get the year from a date string.

Parameters:

dateString - the dateString in the format of "yyyy-MM-dd HH:mm:ss" or "yyyy-MM-dd".

Returns:

an int from 1 to 12. null if the dateString is not a valid date string.

evaluate

public org.apache.hadoop.io.IntWritable evaluate(TimestampWritable t)