com.mapr.ojai.store.impl

Class SharedReleaser<T extends java.lang.AutoCloseable>

java.lang.Object

com.mapr.ojai.store.impl.SharedReleaser<T>

Type Parameters:

T - the type of the shared resource

All Implemented Interfaces:

java.lang.AutoCloseable

public class SharedReleaser<T extends java.lang.AutoCloseable>
extends java.lang.Object
implements java.lang.AutoCloseable

Utility class that uses AutoCloseable to release() a SharedResource exactly once when an instance of this is closed. This is convenient for translating reference counting into AutoCloseble so that java try-with-resource can be used to manage reference counting.

Constructor Summary

Constructors

Constructor and Description
SharedReleaser(SharedResource<T> sharedResource) Constructor.

Method Summary

Modifier and Type	Method and Description
void	close()
T	get() Get the resource.
SharedResource<T>	getSharedResource() Get the SharedResource.

Methods inherited from class java.lang.Object

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

Constructor Detail

SharedReleaser

public SharedReleaser(SharedResource<T> sharedResource)

Constructor.

Parameters:

sharedResource - the SharedResource to be released when this is close()d.

Method Detail

close

public void close()

Specified by:

close in interface java.lang.AutoCloseable

getSharedResource

public SharedResource<T> getSharedResource()

Get the SharedResource. Useful if another user wants to hold on to a reference to that (using an SharedResource.addRef().)

Returns:

the shared resource

get

public T get()

Get the resource. Never close this directly. This is just a shorthand for getSharedResource().get().

Returns:

the shared resource