org.apache.pig.piggybank.evaluation.string
Class Split

java.lang.Object
  org.apache.pig.EvalFunc<Tuple>
      org.apache.pig.piggybank.evaluation.string.Split

public class Split
extends EvalFunc<Tuple>

Wrapper around Java's String.split
input tuple: first column is assumed to have a string to split;
the optional second column is assumed to have the delimiter or regex to split on;
if not provided, it's assumed to be '\s' (space)
the optional third column may provide a limit to the number of results.
If limit is not provided, 0 is assumed, as per Java's split().

Field Summary

Fields inherited from class org.apache.pig.EvalFunc

log, pigLogger, reporter, returnType

Constructor Summary

Split()

Method Summary

Tuple

exec(Tuple input) Wrapper around Java's String.split

Methods inherited from class org.apache.pig.EvalFunc

finish, getArgToFuncMapping, 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

Split

public Split()

Method Detail

exec

public Tuple exec(Tuple input)
           throws IOException

Wrapper around Java's String.split

Specified by:

exec in class EvalFunc<Tuple>

Parameters:

input - tuple; first column is assumed to have a string to split; the optional second column is assumed to have the delimiter or regex to split on;
if not provided, it's assumed to be '\s' (space) the optional third column may provide a limit to the number of results.
If limit is not provided, 0 is assumed, as per Java's split().

Returns:

result, of type T.

Throws:

IOException