jp.ac.tokushima_u.db.common

Class SharableResource

java.lang.Object

jp.ac.tokushima_u.db.common.SharableResource

Direct Known Subclasses:

GnuPlot, PgRDB

public abstract class SharableResource
extends Object

Class for Accessing to Sharable Resource. $Id: SharableResource.java,v 1.5 2022/08/22 09:38:30 alex Exp $

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SharableResource.Cluster<R extends SharableResource>

Field Summary

Fields

Modifier and Type	Field and Description
(package private) boolean	renewRequested

Constructor Summary

Constructors

Constructor and Description
SharableResource()

Method Summary

Modifier and Type	Method and Description
abstract void	close() Close resource (free resource).
long	idlingTime()
abstract boolean	isAvailable() Resource is already ready to be used.
boolean	isReserved()
boolean	isReservedByMe()
abstract boolean	open() Open resource (setup ready to be used).
void	release()
void	renew()
void	reserve()
boolean	tryReserve()

Methods inherited from class java.lang.Object

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

Field Detail

renewRequested

boolean renewRequested

Constructor Detail

SharableResource

public SharableResource()

Method Detail

reserve

public final void reserve()

tryReserve

public final boolean tryReserve()

isReserved

public final boolean isReserved()

isReservedByMe

public final boolean isReservedByMe()

release

public final void release()

idlingTime

public final long idlingTime()

renew

public void renew()

open

public abstract boolean open()

Open resource (setup ready to be used).

Returns:

success to ready to be used.

close

public abstract void close()

Close resource (free resource).

isAvailable

public abstract boolean isAvailable()

Resource is already ready to be used.

Returns:

is available.