Package org.apache.nifi.util.file.monitor

Class CompoundUpdateMonitor

java.lang.Object

org.apache.nifi.util.file.monitor.CompoundUpdateMonitor

All Implemented Interfaces:

UpdateMonitor

public class CompoundUpdateMonitor
extends Object
implements UpdateMonitor

An UpdateMonitor that combines multiple UpdateMonitors such that it will indicate a change in a file only if ALL sub-monitors indicate a change. The sub-monitors will be applied in the order given and if any indicates that the state has not changed, the subsequent sub-monitors may not be given a chance to run

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	CompoundUpdateMonitor.DeferredMonitorAction

Field Summary

Fields

Modifier and Type	Field	Description
private final List<UpdateMonitor>	monitors

Constructor Summary

Constructors

Constructor	Description
CompoundUpdateMonitor(UpdateMonitor first, UpdateMonitor... others)

Method Summary

Modifier and Type	Method	Description
Object	getCurrentState(Path path)

Methods inherited from class java.lang.Object

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

Field Details

monitors

private final List<UpdateMonitor> monitors

Constructor Details

CompoundUpdateMonitor

public CompoundUpdateMonitor(UpdateMonitor first,
 UpdateMonitor... others)

Method Details

getCurrentState

public Object getCurrentState(Path path)
                       throws IOException

Specified by:

getCurrentState in interface UpdateMonitor

Throws:

IOException