org.apache.pig.impl.builtin
Class GFAny

java.lang.Object
  extended by org.apache.pig.EvalFunc<Integer>
      extended by org.apache.pig.impl.builtin.GFAny

public class GFAny
extends EvalFunc<Integer>

built-in grouping function; permits system to choose any grouping.


Field Summary
static int defaultNumGroups
           
 
Fields inherited from class org.apache.pig.EvalFunc
log, pigLogger, reporter, returnType
 
Constructor Summary
GFAny()
           
GFAny(int numGroups)
           
 
Method Summary
 Integer exec(Tuple input)
          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
 

Field Detail

defaultNumGroups

public static final int defaultNumGroups
See Also:
Constant Field Values
Constructor Detail

GFAny

public GFAny()

GFAny

public GFAny(int numGroups)
Method Detail

exec

public Integer exec(Tuple input)
             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<Integer>
Parameters:
input - the Tuple to be processed.
Returns:
result, of type T.
Throws:
IOException


Copyright © ${year} The Apache Software Foundation