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

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

public class UDFToString
extends UDF


Constructor Summary
UDFToString()
           
 
Method Summary
 String evaluate(Boolean i)
           
 String evaluate(Byte i)
           
 String evaluate(Date i)
          Convert from date to a string.
 String evaluate(Double i)
           
 String evaluate(Float i)
           
 String evaluate(Integer i)
           
 String evaluate(Long i)
           
 String evaluate(Short i)
           
 String evaluate(Void i)
           
 
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

UDFToString

public UDFToString()
Method Detail

evaluate

public String evaluate(Void i)

evaluate

public String evaluate(Boolean i)

evaluate

public String evaluate(Byte i)

evaluate

public String evaluate(Short i)

evaluate

public String evaluate(Integer i)

evaluate

public String evaluate(Long i)

evaluate

public String evaluate(Float i)

evaluate

public String evaluate(Double i)

evaluate

public String evaluate(Date i)
Convert from date to a string. This is called for CAST(... AS STRING)

Parameters:
i - The date value to convert
Returns:
String


Copyright © 2009 The Apache Software Foundation