Package dev.prozilla.pine.common.property

Class LazyProperty<T>

java.lang.Object

dev.prozilla.pine.common.property.LazyProperty<T>

All Implemented Interfaces:

Property<T>, Functor<T>

Direct Known Subclasses:

SystemProperty

public abstract class LazyProperty<T>
extends Object
implements Property<T>

A property that does not have a value until it is used for the first time.

This type of property is optimized, because the value will only be fetched once in most cases. This is especially useful for values that are expensive to fetch.

Field Summary

Fields

Modifier and Type	Field	Description
protected T	value

Constructor Summary

Constructors

Constructor	Description
LazyProperty()

Method Summary

Modifier and Type	Method	Description
protected abstract T	fetch()
T	getValue()	Returns the current value, or fetches the value if it is null.

Methods inherited from class java.lang.Object

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

Methods inherited from interface dev.prozilla.pine.common.property.Property

getValueOr, hasValue, hasValueProperty, isNotNull, isNotNullProperty, isNull, map, replaceNull, requireValue, snapshot, toStringProperty

Field Details

value

protected T value

Constructor Details

LazyProperty

public LazyProperty()

Method Details

fetch

protected abstract T fetch()

getValue

public T getValue()

Returns the current value, or fetches the value if it is null.

Specified by:

getValue in interface Property<T>

Returns:

The value of this property.