com.pervasive.datarush.tokens

Class InputModificationCountProvider

java.lang.Object

com.pervasive.datarush.tokens.InputModificationCountProvider

All Implemented Interfaces:

ModificationCountProvider

public final class InputModificationCountProvider
extends Object
implements ModificationCountProvider

A change sequence derived from an input port. The sequence number advances as the input port is advanced using RecordInput.stepNext() Use this implementation with classes wrapping a record value where the value is a RecordInput.

Constructor Summary

Constructors

Constructor and Description
InputModificationCountProvider(RecordInput input) Creates a change sequence based on the specified input port.

Method Summary

Methods

Modifier and Type	Method and Description
long	getModificationCount() Gets the current change number.

Methods inherited from class java.lang.Object

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

Constructor Detail

InputModificationCountProvider

public InputModificationCountProvider(RecordInput input)

Creates a change sequence based on the specified input port. As the port advances, the sequence number changes.

Parameters:

input - the port used as the basis of the change sequence

Method Detail

getModificationCount

public long getModificationCount()

Description copied from interface: ModificationCountProvider

Gets the current change number. This value is monotonically increasing; a change in value indicates a change to the data structure associated with the provider.

Specified by:

getModificationCount in interface ModificationCountProvider

Returns:

the current sequence number