com.pervasive.datarush.tokens

Interface ModificationCountProvider

All Known Implementing Classes:

DefaultModificationCountProvider, InputModificationCountProvider

public interface ModificationCountProvider

A monotonically increasing sequence of change numbers. These can be used to detect when cached values have been (potentially) invalidated, provided that modifiers increment the underlying counter.

Change number sequences are only required for advanced techniques; normal usage of operators and ports does not require them.

Method Summary

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

Method Detail

getModificationCount

long getModificationCount()

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.

Returns:

the current sequence number