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

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

public class UDFYear
extends UDF


Constructor Summary
UDFYear()
           
 
Method Summary
 org.apache.hadoop.io.IntWritable evaluate(org.apache.hadoop.io.Text dateString)
          Get the year from a date string.
 
Methods inherited from class org.apache.hadoop.hive.ql.exec.UDF
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.


Copyright © 2009 The Apache Software Foundation