org.ops4j.peaberry.cache
Class AbstractServiceImport<T>

java.lang.Object
  org.ops4j.peaberry.cache.AbstractServiceImport<T>

All Implemented Interfaces:

Comparable<Import<T>>, Import<T>

public abstract class AbstractServiceImport<T>
extends Object
implements Import<T>, Comparable<Import<T>>

Partial Import implementation with generation based caching.

Author:

mcculls@gmail.com (Stuart McCulloch)

Constructor Summary

protected

AbstractServiceImport()

Method Summary

protected abstract T	acquireService()
boolean	available() Is the service instance available?
T	get() Start using the imported service instance.
protected abstract boolean	hasRankingChanged()
protected abstract void	releaseService(T o)
static void	setCacheGeneration(int newGeneration)
void	unget() Stop using the imported service instance.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.ops4j.peaberry.Import

attributes

Methods inherited from interface java.lang.Comparable

compareTo

Constructor Detail

AbstractServiceImport

protected AbstractServiceImport()

Method Detail

get

public final T get()

Description copied from interface: Import

Start using the imported service instance.

Specified by:

get in interface Import<T>

Returns:

service instance

unget

public final void unget()

Description copied from interface: Import

Stop using the imported service instance.

Specified by:

unget in interface Import<T>

available

public final boolean available()

Description copied from interface: Import

Is the service instance available?

Specified by:

available in interface Import<T>

Returns:

true if the service is available, otherwise false

setCacheGeneration

public static final void setCacheGeneration(int newGeneration)

acquireService

protected abstract T acquireService()

hasRankingChanged

protected abstract boolean hasRankingChanged()

releaseService

protected abstract void releaseService(T o)