Package io.deephaven.engine.table.impl.remote

Interface ConstructSnapshot.SnapshotConsistent

All Known Subinterfaces:

ConstructSnapshot.SnapshotControl

All Known Implementing Classes:

ConstructSnapshot.StaticSnapshotControl, OperationSnapshotControl, OperationSnapshotControlEx

Enclosing class:

ConstructSnapshot

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public static interface ConstructSnapshot.SnapshotConsistent

Interface for snapshotConsistent(long, boolean).

Method Summary

Modifier and Type	Method	Description
boolean	snapshotConsistent(long currentClockValue, boolean usingPreviousValues)	Determine (from within a snapshot function) if the snapshot appears to still be consistent.

Method Details

snapshotConsistent

boolean snapshotConsistent(long currentClockValue,
 boolean usingPreviousValues)

Determine (from within a snapshot function) if the snapshot appears to still be consistent.

This should be no more restrictive than the associated ConstructSnapshot.SnapshotCompletedConsistently.

Can assume as a precondition that the clock step has not been observed to change since the last time the associated ConstructSnapshot.UsePreviousValues.usePreviousValues(long) was invoked, and that the clock state has not been observed to change if previous values were used. See ConstructSnapshot.clockConsistent(long, long, boolean).

Parameters:

currentClockValue - The current clock value

usingPreviousValues - Whether the snapshot function is using previous values

Returns:

True if we can no longer expect that the snapshot function's result will be consistent