Package com.usatiuk.objects

Class JDataVersionedWrapperLazy

java.lang.Object

com.usatiuk.objects.JDataVersionedWrapperLazy

All Implemented Interfaces:

Data<JDataVersionedWrapper>, MaybeTombstone<JDataVersionedWrapper>, JDataVersionedWrapper

public final class JDataVersionedWrapperLazy
extends Object
implements JDataVersionedWrapper

Lazy JDataVersionedWrapper implementation. The object is deserialized only when data() is called for the first time. Also allows to set a callback to be called when the data is loaded (e.g. to cache it).

Constructor Summary

Constructors

Constructor	Description
JDataVersionedWrapperLazy(long version, int estimatedSize, Supplier<JData> producer)	Creates a new JDataVersionedWrapperLazy object.

Method Summary

Modifier and Type	Method	Description
JData	data()	Returns the wrapped object.
int	estimateSize()	Returns the estimated size of the object in bytes.
void	setCacheCallback(Runnable cacheCallback)	Set a callback to be called when the data is loaded.
long	version()	Returns the version number of the object.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.usatiuk.objects.JDataVersionedWrapper

value

Constructor Details

JDataVersionedWrapperLazy

public JDataVersionedWrapperLazy(long version,
 int estimatedSize,
 Supplier<JData> producer)

Creates a new JDataVersionedWrapperLazy object.

Parameters:

version - the version number of the object

estimatedSize - the estimated size of the object in bytes

producer - a supplier that produces the wrapped object

Method Details

setCacheCallback

public void setCacheCallback(Runnable cacheCallback)

Set a callback to be called when the data is loaded.

Parameters:

cacheCallback - the callback to be called

data

public JData data()

Description copied from interface: JDataVersionedWrapper

Returns the wrapped object.

Specified by:

data in interface JDataVersionedWrapper

Returns:

the wrapped object

version

public long version()

Description copied from interface: JDataVersionedWrapper

Returns the version number of the object.

Specified by:

version in interface JDataVersionedWrapper

Returns:

the version number of the object

estimateSize

public int estimateSize()

Description copied from interface: JDataVersionedWrapper

Returns the estimated size of the object in bytes.

Specified by:

estimateSize in interface JDataVersionedWrapper

Returns:

the estimated size of the object in bytes