LazyValue (Jackrabbit Oak 1.88.0 API)

java.lang.Object
- org.apache.jackrabbit.oak.commons.LazyValue<T>

All Implemented Interfaces:

Supplier<T>
```
public abstract class LazyValue<T>
extends Object
implements Supplier<T>
```
An instances of this class represents a lazy value of type T. LazyValue implements an evaluate by need semantics: createValue() is called exactly once when get() is called for the first time.
LazyValue instances are thread safe.

Constructor Summary

Constructors
Constructor Description

LazyValue()

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`protected abstract T`	`createValue()`	Factory method called to create the value on an as need basis.
`T`	`get()`	Get value.
`boolean`	`hasValue()`

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

- Constructor Detail
  - LazyValue
```
public LazyValue()
```
- Method Detail
  - createValue
```
protected abstract T createValue()
```
    Factory method called to create the value on an as need basis.
    
    Returns:
    
    a new instance for T.
  - hasValue
```
public boolean hasValue()
```
    Returns:
    
    true iff get() has been called at least once.
  - get
```
public T get()
```
    Get value. Calls createValue() if called for the first time.
    
    Specified by:
    
    get in interface Supplier<T>
    
    Returns:
    
    the value