com.vaadin.flow.server.frontend.scanner

Interface ClassFinder

All Superinterfaces:

Serializable

All Known Implementing Classes:

ClassFinder.CachedClassFinder, ClassFinder.DefaultClassFinder

public interface ClassFinder
extends Serializable

Interface for annotated and subclass class searches.

Since:

2.0

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	ClassFinder.CachedClassFinder Implementation that proxy and cache a real ClassFinder.
static class	ClassFinder.DefaultClassFinder Implementation that searches for annotated classes or subclasses in a list of classes.

Method Summary

Modifier and Type	Method and Description
Set<Class<?>>	getAnnotatedClasses(Class<? extends Annotation> clazz) Get annotated classes in the classloader.
default Set<Class<?>>	getAnnotatedClasses(String className) Get annotated classes in the classloader.
ClassLoader	getClassLoader() Get class loader which is used to find classes.
URL	getResource(String name) Get a resource from the classpath.
<T> Set<Class<? extends T>>	getSubTypesOf(Class<T> type) Gets all subtypes in hierarchy of a given type.
default <T> Set<Class<? extends T>>	getSubTypesOf(String name) Gets all subtypes in hierarchy of a given type, using FQN string.
<T> Class<T>	loadClass(String name) Load a class in the classloader.

Method Detail

getAnnotatedClasses

Set<Class<?>> getAnnotatedClasses(Class<? extends Annotation> clazz)

Get annotated classes in the classloader.

Parameters:

clazz - the annotation

Returns:

a set with all classes that are annotated

getAnnotatedClasses

default Set<Class<?>> getAnnotatedClasses(String className)
                                   throws ClassNotFoundException

Get annotated classes in the classloader.

Parameters:

className - the annotation class name

Returns:

a set with all classes that are annotated

Throws:

ClassNotFoundException - when the class not found

getResource

URL getResource(String name)

Get a resource from the classpath.

Parameters:

name - class literal

Returns:

the resource

loadClass

<T> Class<T> loadClass(String name)
                throws ClassNotFoundException

Load a class in the classloader.

Parameters:

name - the class literal

Returns:

the class

Throws:

ClassNotFoundException - when the class is not in the classpath

getSubTypesOf

<T> Set<Class<? extends T>> getSubTypesOf(Class<T> type)

Gets all subtypes in hierarchy of a given type.

Type Parameters:

T - the class of the type

Parameters:

type - the type to search for the subtypes for

Returns:

set of the subtypes of the given class

getClassLoader

ClassLoader getClassLoader()

Get class loader which is used to find classes.

Returns:

the class loader which is used to find classes..

getSubTypesOf

default <T> Set<Class<? extends T>> getSubTypesOf(String name)
                                           throws ClassNotFoundException

Gets all subtypes in hierarchy of a given type, using FQN string.

Type Parameters:

T - the class of the type

Parameters:

name - Fully qualified name of the type to search subtypes of

Returns:

set of the subtypes of the given class

Throws:

ClassNotFoundException - when the parent class is not in the classpath