Package au.csiro.pathling.utilities

Class Default<T>

java.lang.Object

au.csiro.pathling.utilities.Default<T>

Type Parameters:

T - the type of the value.

public class Default<T>
extends Object

Represents a default value of type T. Simplifies resolution of values where null represents the default, e.g:

    Default<Integer> DEFAULT_VALUE = Default.of(100);
    ...
    int value = DEFAULT_VALUE.resolve(valueOrNull);
 

Method Summary

Modifier and Type	Method	Description
static <T> Default<T>	of(T defaultValue)	Constructs the default value for given type T.
T	resolve(T value)	Resolved a nullable value to the value itself it not null or otherwise to the underlying default value.

Methods inherited from class java.lang.Object

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

Method Detail

resolve

@Nonnull
public T resolve(@Nullable
                 T value)

Resolved a nullable value to the value itself it not null or otherwise to the underlying default value.

Parameters:

value - the nullable value to resolve

Returns:

the value of the default

of

@Nonnull
public static <T> Default<T> of(@Nonnull
                                T defaultValue)

Constructs the default value for given type T.

Type Parameters:

T - the type of the value.

Parameters:

defaultValue - the default value.

Returns:

the default object.