org.apache.pig.builtin

Class COV.Final

java.lang.Object

org.apache.pig.EvalFunc<DataBag>

org.apache.pig.builtin.COV.Final

Enclosing class:

COV

public static class COV.Final
extends EvalFunc<DataBag>

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.pig.EvalFunc

EvalFunc.SchemaType

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.Vector<java.lang.String>	schemaName

Fields inherited from class org.apache.pig.EvalFunc

log, pigLogger, reporter, returnType

Constructor Summary

Constructors

Constructor and Description
Final()
Final(java.lang.String... schemaName)

Method Summary

Modifier and Type	Method and Description
DataBag	exec(Tuple input) This callback method must be implemented by all subclasses.

Methods inherited from class org.apache.pig.EvalFunc

allowCompileTimeCalculation, finish, getArgToFuncMapping, getCacheFiles, getInputSchema, getLoadCaster, getLogger, getPigLogger, getReporter, getReturnType, getSchemaName, getSchemaType, getShipFiles, isAsynchronous, needEndOfAllInputProcessing, outputSchema, progress, setEndOfAllInput, setInputSchema, setPigLogger, setReporter, setUDFContextSignature, warn

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

schemaName

protected java.util.Vector<java.lang.String> schemaName

Constructor Detail

Final

public Final()

Final

public Final(java.lang.String... schemaName)

Method Detail

exec

public DataBag exec(Tuple input)
             throws java.io.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<DataBag>

Parameters:

input - the Tuple to be processed.

Returns:

result, of type T.

Throws:

java.io.IOException