Module id.xfunction

Package id.xfunction

Class ObjectStore<T extends Serializable>

Object

ObjectStore<T>

public class ObjectStore<T extends Serializable>
extends Object

Persistent store for Serializable object. Object is stored in a file you specify. Later you can restore it back. Useful in case you need some simple persistent and don't have time to deal with DB (JPA), or adding dependency to some Json library etc. The drawback of this store is that you would not be able manually to modify the object values in the file after it is stored.

If you want to store Collection object make sure to parameterize it with collection implementation which implements Serializable and not with Collection interface. For example you cannot store Set but you can store HashSet since Set does not implement Serializable and HashSet does.

Constructor Summary

Constructors

Constructor	Description
ObjectStore(Path file)	Create a store and use following file

Method Summary

Modifier and Type	Method	Description
Optional<T>	load()	Loads object from a current store
void	save(T obj)	Persist given object into current store

Methods inherited from class Object

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

Constructor Details

ObjectStore

public ObjectStore(Path file)

Create a store and use following file

Method Details

save

public void save(T obj)

Persist given object into current store

load

public Optional<T> load()

Loads object from a current store