net.sf.jtemporal
Class WeakTimeSeriesFactory

java.lang.Object
  net.sf.jtemporal.WeakTimeSeriesFactory

Deprecated.

public class WeakTimeSeriesFactory
extends java.lang.Object

Factory for timeseries.
The point is that timeseries values are internally stored in a WeakHashMap, in such a way that you can globally remove a date from the TimeSeriesMgr to free the memory of all the TimeSeries simultaenously, for the given date.
The advantage, is that this costly removal is done by the garbage collector and only if you need memory.
No strong references are held on the timeseries anymore: as soon you unreference them they are eligible for garbage collection. By moving the responsability to the gc, the code is quite simple, because we do not need to perform the old dates removal.

Version:

$Id: WeakTimeSeriesFactory.java,v 1.3 2004/05/02 15:51:00 tabeck Exp $

Constructor Summary

WeakTimeSeriesFactory()
Deprecated.

Method Summary

TimeSeries	getHashTimeSeries() Deprecated. Creates a new TimeSeries, internally linked to this mgr.
TimeSeries	getHashTimeSeries(MissingInstantHandler handler) Deprecated. Creates a new TimeSeries, internally linked to this mgr.
void	weaken(Instant i) Deprecated. Potentially removes the given instant in all the TimeSeries created by this mgr.
void	weaken(Period p) Deprecated. Potentially removes all the known instant in the given Period range, in all the TimeSeries created by this mgr.

Methods inherited from class java.lang.Object

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

Constructor Detail

WeakTimeSeriesFactory

public WeakTimeSeriesFactory()

Deprecated.

Method Detail

getHashTimeSeries

public TimeSeries getHashTimeSeries()

Deprecated.

Creates a new TimeSeries, internally linked to this mgr.
This internal link won't prevent the whole timeseries to be garbaged, if unreferenced.

Returns:

the new empty TimeSeries instance

getHashTimeSeries

public TimeSeries getHashTimeSeries(MissingInstantHandler handler)

Deprecated.

Creates a new TimeSeries, internally linked to this mgr.
This internal link won't prevent the whole timeseries to be garbaged, if unreferenced.

Parameters:

handler - the handler used by the TimeSeries

Returns:

the new empty TimeSeries instance

weaken

public void weaken(Instant i)

Deprecated.

Potentially removes the given instant in all the TimeSeries created by this mgr.
Actually, they will be removed by the garbage collector on a "as-needed" basis.
Reading a value in a timeseries for this instant, will automatically make it strong again.

Parameters:

i - the instant whose entries are to be removed from the timeseries.

weaken

public void weaken(Period p)

Deprecated.

Potentially removes all the known instant in the given Period range, in all the TimeSeries created by this mgr.
Actually, they will be removed by the garbage collector on a "as-needed" basis.

Parameters:

p - the period defining the range of deletion