org.apache.pig.piggybank.evaluation.math
Class FloatRound

java.lang.Object
  extended by org.apache.pig.EvalFunc<Integer>
      extended by org.apache.pig.piggybank.evaluation.math.FloatRound

public class FloatRound
extends EvalFunc<Integer>

math.ROUND implements a binding to the Java function Math.round(float). Given a single data atom it Returns the closest long to the argument.

Parameters:
value - Float.
Return Value:
Integer
Return Schema:
ROUND_inputSchema
Example:
register math.jar;
A = load 'mydata' using PigStorage() as ( float1 );
B = foreach A generate float1, math.ROUND(float1);

Author:
ajay garg
See Also:
Math.round(float),

Field Summary
 
Fields inherited from class org.apache.pig.EvalFunc
log, pigLogger, reporter, returnType
 
Constructor Summary
FloatRound()
           
 
Method Summary
 Integer exec(Tuple input)
          java level API
 Schema outputSchema(Schema input)
           
 
Methods inherited from class org.apache.pig.EvalFunc
finish, getArgToFuncMapping, getLogger, getPigLogger, getReporter, getReturnType, getSchemaName, isAsynchronous, progress, setPigLogger, setReporter, warn
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

FloatRound

public FloatRound()
Method Detail

exec

public Integer exec(Tuple input)
             throws IOException
java level API

Specified by:
exec in class EvalFunc<Integer>
Parameters:
input - expects a single numeric value
output - returns a single numeric value, the closest long to the argument
Returns:
result, of type T.
Throws:
IOException

outputSchema

public Schema outputSchema(Schema input)
Overrides:
outputSchema in class EvalFunc<Integer>
Parameters:
input - Schema of the input
Returns:
Schema of the output


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