org.apache.pig.piggybank.evaluation.util
Class Top.Initial

java.lang.Object
  extended by org.apache.pig.EvalFunc<Tuple>
      extended by org.apache.pig.piggybank.evaluation.util.Top.Initial
Enclosing class:
Top

public static class Top.Initial
extends EvalFunc<Tuple>


Field Summary
 
Fields inherited from class org.apache.pig.EvalFunc
log, pigLogger, reporter, returnType
 
Constructor Summary
Top.Initial()
           
 
Method Summary
 Tuple exec(Tuple tuple)
          This callback method must be implemented by all subclasses.
 
Methods inherited from class org.apache.pig.EvalFunc
finish, getArgToFuncMapping, getCacheFiles, getLogger, getPigLogger, getReporter, getReturnType, getSchemaName, isAsynchronous, outputSchema, progress, setPigLogger, setReporter, warn
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Top.Initial

public Top.Initial()
Method Detail

exec

public Tuple exec(Tuple tuple)
           throws IOException
Description copied from class: EvalFunc
This callback method must be implemented by all subclasses. This is the method that will be invoked on every Tuple of a given dataset. Since the dataset may be divided up in a variety of ways the programmer should not make assumptions about state that is maintained between invocations of this method.

Specified by:
exec in class EvalFunc<Tuple>
Parameters:
tuple - the Tuple to be processed.
Returns:
result, of type T.
Throws:
IOException


Copyright © ${year} The Apache Software Foundation