LazyDelegatingOptional (jems2 2.8.0 API)

java.lang.Object
- org.dmfs.jems2.optional.LazyDelegatingOptional<T>

All Implemented Interfaces:

Optional<T>

Direct Known Subclasses:

Conditional, First, Frozen, MapEntry, Next, Sieved
```
public abstract class LazyDelegatingOptional<T>
extends java.lang.Object
implements Optional<T>
```
An abstract Optional which delegates all method calls to another given Optional.
This class is abstract and is meant to be a convenient way of composing Optionals despite the lack of native support for the decoration pattern in Java.

Constructor Summary

Constructors
Modifier Constructor Description

protected LazyDelegatingOptional(Single<Optional<T>> delegate)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`isPresent()`	Returns whether the optional value is present.
`T`	`value()`	Returns the optional value.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - LazyDelegatingOptional
```
protected LazyDelegatingOptional(Single<Optional<T>> delegate)
```
- Method Detail
  - isPresent
```
public final boolean isPresent()
```
    Description copied from interface: Optional
    
    Returns whether the optional value is present.
    
    Specified by:
    
    isPresent in interface Optional<T>
  - value
```
public final T value()
              throws java.util.NoSuchElementException
```
    Description copied from interface: Optional
    
    Returns the optional value.
    
    Specified by:
    
    value in interface Optional<T>
    
    Throws:
    
    java.util.NoSuchElementException - if the optional value is not present.