net.sf.javagimmicks.util8

Interface WritableSupplier<E>

Type Parameters:

E - the type of object the container can carry

All Superinterfaces:

java.util.function.Consumer<E>, java.util.function.Supplier<E>

public interface WritableSupplier<E>
extends java.util.function.Supplier<E>, java.util.function.Consumer<E>

This interface extends Supplier by providing additional methods that allow write access to the contained object.

Method Summary

Modifier and Type	Method and Description
void	accept(E instance) Registers an instance in the container
boolean	isAllowOverwrite() Returns if an already set object instance may be replaced by another one
E	remove() Removes the instance (if any) from the container

Methods inherited from interface java.util.function.Supplier

get

Methods inherited from interface java.util.function.Consumer

andThen

Method Detail

isAllowOverwrite

boolean isAllowOverwrite()

Returns if an already set object instance may be replaced by another one

Returns:

if an already set object instance my be replaced by another one

See Also:

accept(Object)

accept

void accept(E instance)
     throws IllegalStateException

Registers an instance in the container

Specified by:

accept in interface java.util.function.Consumer<E>

Parameters:

instance - the instance to register

Throws:

IllegalStateException - if the given instances is not null and there is already another instance registered and isAllowOverwrite() is true

See Also:

isAllowOverwrite()

remove

E remove()

Removes the instance (if any) from the container

Returns:

the previously registered instance or null if none was registered