Package one.microstream.collections.lazy

Interface LazySegmentUnloader

All Known Implementing Classes:

LazySegmentUnloader.Default, LazySegmentUnloader.Never, LazySegmentUnloader.Timed

public interface LazySegmentUnloader

Defines methods to control automated unloading of LazySegments.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	LazySegmentUnloader.Default	Default implementation of LazyUnloader This implementation will try to keep a configurable number of last loaded segments in memory.
static class	LazySegmentUnloader.Never	LazyUnloader implementation that does no unloading.
static class	LazySegmentUnloader.Timed	Implementation of LazyUnloader This implementation will try to unload segments that are older then the configured lifetime.

Method Summary

Modifier and Type	Method	Description
LazySegmentUnloader	copy()	Create a new copy of this LazySegmentUnloader.
void	remove(LazySegment<?> segment)	Unregister the provided segment from the Unloader.
void	unload(boolean unloadAll)	Tries to unload as much as possible elements from the collection.
void	unload(LazySegment<?> currentLazySegment)	Tries to unload segments.

Method Details

unload

void unload(LazySegment<?> currentLazySegment)

Tries to unload segments. Most implementation should not unload the currently used segment.

Parameters:

currentLazySegment - LazySegment that is currently in use.

unload

void unload(boolean unloadAll)

Tries to unload as much as possible elements from the collection. The amount of unloaded data depends on the unloader implementation details. E.g if the unloader is configured to keep a minimum of data in memory that minimum will not be unloaded as long as the parameter unloadAll is not specified. If unloadAll is try it will try to to fall below that limit.

Parameters:

unloadAll - if true try to unload everything, try to fall below limit if possible.

remove

void remove(LazySegment<?> segment)

Unregister the provided segment from the Unloader.

Parameters:

segment - Segment to be unregistered.

copy

LazySegmentUnloader copy()

Create a new copy of this LazySegmentUnloader.

Returns:

a new copy of this LazySegmentUnloader