org.apache.nifi.processor.util.pattern

Class PartialFunctions

java.lang.Object

org.apache.nifi.processor.util.pattern.PartialFunctions

public class PartialFunctions
extends Object

This class contains various partial functions those are reusable among process patterns.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	PartialFunctions.AdjustRoute<FC>
static interface	PartialFunctions.Cleanup<FC,C>
static interface	PartialFunctions.FetchFlowFiles<FC>
static interface	PartialFunctions.FlowFileGroup
static interface	PartialFunctions.InitConnection<FC,C>
static interface	PartialFunctions.OnCompleted<FC,C>
static interface	PartialFunctions.OnFailed<FC,C>
static interface	PartialFunctions.OnTrigger
static interface	PartialFunctions.RollbackSession
static interface	PartialFunctions.TransferFlowFiles<FC>

Constructor Summary

Constructors

Constructor and Description
PartialFunctions()

Method Summary

Modifier and Type	Method and Description
static <FCT> PartialFunctions.FetchFlowFiles<FCT>	fetchSingleFlowFile()
static void	onTrigger(ProcessContext context, ProcessSessionFactory sessionFactory, ComponentLog logger, PartialFunctions.OnTrigger onTrigger) This method is identical to what AbstractProcessor.onTrigger(ProcessContext, ProcessSession) does.
static void	onTrigger(ProcessContext context, ProcessSessionFactory sessionFactory, ComponentLog logger, PartialFunctions.OnTrigger onTrigger, PartialFunctions.RollbackSession rollbackSession)
static <FCT> PartialFunctions.TransferFlowFiles<FCT>	transferRoutedFlowFiles()

Methods inherited from class java.lang.Object

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

Constructor Detail

PartialFunctions

public PartialFunctions()

Method Detail

fetchSingleFlowFile

public static <FCT> PartialFunctions.FetchFlowFiles<FCT> fetchSingleFlowFile()

transferRoutedFlowFiles

public static <FCT> PartialFunctions.TransferFlowFiles<FCT> transferRoutedFlowFiles()

onTrigger

public static void onTrigger(ProcessContext context,
                             ProcessSessionFactory sessionFactory,
                             ComponentLog logger,
                             PartialFunctions.OnTrigger onTrigger)
                      throws ProcessException

This method is identical to what AbstractProcessor.onTrigger(ProcessContext, ProcessSession) does.

Create a session from ProcessSessionFactory and execute specified onTrigger function, and commit the session if onTrigger finishes successfully.

When an Exception is thrown during execution of the onTrigger, the session will be rollback. FlowFiles being processed will be penalized.

Throws:

ProcessException

onTrigger

public static void onTrigger(ProcessContext context,
                             ProcessSessionFactory sessionFactory,
                             ComponentLog logger,
                             PartialFunctions.OnTrigger onTrigger,
                             PartialFunctions.RollbackSession rollbackSession)
                      throws ProcessException

Throws:

ProcessException