Package de.bmiag.tapir.variant.service

Class FeatureBasedContainer<T>

java.lang.Object

de.bmiag.tapir.variant.service.FeatureBasedContainer<T>

All Implemented Interfaces:

FeatureBased

public final class FeatureBasedContainer<T>
extends java.lang.Object
implements FeatureBased

This is a container which holds a single non-null element and an optional FeatureExpression.

Since:

3.3.0

Method Summary

Modifier and Type	Method	Description
java.util.Optional<FeatureExpression>	getActivateByFeatureExpression()	Returns the condition which has to match for this instance to be provided
static <V> FeatureBasedContainer<V>	of(V element)	Creates a new FeatureBasedContainer with the given element and without expression.
static <V> FeatureBasedContainer<V>	of(V element, FeatureExpression expression)	Creates a new FeatureBasedContainer with the given element and expression.

Methods inherited from class java.lang.Object

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

Method Detail

of

public static <V> FeatureBasedContainer<V> of(V element)

Creates a new FeatureBasedContainer with the given element and without expression.

Parameters:

element - The element which is stored in the new container. Must not be null.

Returns:

A new container.

Throws:

java.lang.NullPointerException - If the given element is null.

Since:

3.3.0

of

public static <V> FeatureBasedContainer<V> of(V element,
                                              FeatureExpression expression)

Creates a new FeatureBasedContainer with the given element and expression.

Parameters:

element - The element which is stored in the new container. Must not be null.

expression - The feature expression to control whether this element is used or not. Must not be null.

Returns:

A new container.

Throws:

java.lang.NullPointerException - If the given element or the given feature expression is null.

Since:

3.3.0

getActivateByFeatureExpression

@Pure
public java.util.Optional<FeatureExpression> getActivateByFeatureExpression()

Description copied from interface: FeatureBased

Returns the condition which has to match for this instance to be provided

Specified by:

getActivateByFeatureExpression in interface FeatureBased

Returns:

an instance of FeatureExpression. An empty Optional is handled like an expression which evaluates to true.