de.team33.libs.classes.v1

Class Classes

java.lang.Object

de.team33.libs.classes.v1.Classes

public class Classes
extends Object

Utility for dealing with classes.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	Classes.Streaming Provides streaming methods from Classes as predefined Functions.

Constructor Summary

Constructors

Constructor and Description
Classes()

Method Summary

Modifier and Type	Method and Description
static int	distance(Class<?> superClass, Class<?> subClass) Determines the distance between a class <subClass> and a superordinate class from its lineage hierarchy <superClass>, whereby the distance between a class and itself is always 0.
static boolean	isLineage(Class<?> superClass, Class<?> subClass) Determines whether there is an (possibly indirect but) explicit lineage relationship between two classes.
static Stream<Class<?>>	lineageClasses(Class<?> subject) Streams the lineage classes of a given class.
static Stream<Class<?>>	lineageHierarchy(Class<?> subject) Streams the lineage hierarchy of a given class.
static Stream<Class<?>>	superior(Class<?> subject) Streams, in a single step, all the direct interfaces and, if any, the direct superclass of a given Class.

Methods inherited from class java.lang.Object

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

Constructor Detail

Classes

public Classes()

Method Detail

isLineage

public static boolean isLineage(Class<?> superClass,
                                Class<?> subClass)

Determines whether there is an (possibly indirect but) explicit lineage relationship between two classes.

Note: Any interface can be assigned to the class Object, for example, but there is no explicit lineage relationship between Object and any interface.

Throws:

NullPointerException - if one of the given Arguments is null.

distance

public static int distance(Class<?> superClass,
                           Class<?> subClass)

Determines the distance between a class <subClass> and a superordinate class from its lineage hierarchy <superClass>, whereby the distance between a class and itself is always 0. The distance between a class and its direct superclass or one of its direct interfaces is always 1 and so on.

Throws:

IllegalArgumentException - if <superClass> ist not a superordinate class from the lineage hierarchy of <subClass> or at least the <subClass> itself.

NullPointerException - if one of the given Arguments is null.

superior

public static Stream<Class<?>> superior(Class<?> subject)

Streams, in a single step, all the direct interfaces and, if any, the direct superclass of a given Class.

lineageClasses

public static Stream<Class<?>> lineageClasses(Class<?> subject)

Streams the lineage classes of a given class. In particular results in a Stream that is composed of the lineage classes of the (superclass and finally the mentioned class itself.

lineageHierarchy

public static Stream<Class<?>> lineageHierarchy(Class<?> subject)

Streams the lineage hierarchy of a given class. In particular results in a Stream that is composed of the lineage hierarchy of any superordinate classes (superclass and interfaces) and finally the mentioned class itself.