org.apache.pig.builtin
Class IsEmpty

java.lang.Object
  extended by org.apache.pig.FilterFunc
      extended by org.apache.pig.builtin.IsEmpty

public class IsEmpty
extends FilterFunc


Constructor Summary
IsEmpty()
           
 
Method Summary
 boolean exec(Tuple input)
          This callback method must be implemented by all subclasses.
 
Methods inherited from class org.apache.pig.FilterFunc
finish
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

IsEmpty

public IsEmpty()
Method Detail

exec

public boolean exec(Tuple input)
             throws IOException
Description copied from class: FilterFunc
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 FilterFunc
Parameters:
input - the Tuple to be processed.
Throws:
IOException


Copyright © ${year} The Apache Software Foundation