ro.pippo.controller.util

Class ClassUtils

java.lang.Object

ro.pippo.controller.util.ClassUtils

public class ClassUtils
extends java.lang.Object

Class reflection utility methods.

Author:

James Moger

Constructor Summary

Constructors

Constructor and Description
ClassUtils()

Method Summary

Modifier and Type	Method and Description
static <T extends java.lang.annotation.Annotation> java.util.List<T>	collectNestedAnnotation(java.lang.Class<?> objectClass, java.lang.Class<T> annotationClass)
static <T extends java.lang.annotation.Annotation> java.util.List<T>	collectNestedAnnotation(java.lang.reflect.Method method, java.lang.Class<T> annotationClass)
static <T> T	executeDeclaredMethod(java.lang.Object o, java.lang.String methodName, java.lang.Object... args)
static java.util.Collection<java.lang.Class<?>>	getAnnotatedClasses(java.lang.Class<? extends java.lang.annotation.Annotation> annotationClass, java.lang.String... packageNames)
static <T extends java.lang.annotation.Annotation> T	getAnnotation(java.lang.Class<?> objectClass, java.lang.Class<T> annotationClass)
static <T extends java.lang.annotation.Annotation> T	getAnnotation(java.lang.reflect.Method method, java.lang.Class<T> annotationClass) Extract the annotation from the controllerMethod or the declaring class.
static <T> java.lang.Class<T>	getClass(java.lang.String className)
static java.util.Collection<java.lang.Class<?>>	getClasses(java.lang.String... packageNames) Returns the list of all classes within a package.
static java.util.List<java.lang.reflect.Method>	getDeclaredMethods(java.lang.Class<?> clazz) Returns an array containing Method objects reflecting all the declared methods of the class or interface represented by this Class object, including public, protected, default (package) access, and private methods, but excluding inherited methods.
static java.util.List<java.net.URL>	getResources(java.lang.String name)
static <T> java.util.Collection<java.lang.Class<? extends T>>	getSubTypesOf(java.lang.Class<T> type, java.lang.String... packageNames) Gets all sub types in hierarchy of a given type.
static boolean	isAssignable(java.lang.Object value, java.lang.Class<?> type)

Methods inherited from class java.lang.Object

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

Constructor Detail

ClassUtils

public ClassUtils()

Method Detail

getClass

public static <T> java.lang.Class<T> getClass(java.lang.String className)

getClasses

public static java.util.Collection<java.lang.Class<?>> getClasses(java.lang.String... packageNames)

Returns the list of all classes within a package.

Parameters:

packageNames -

Returns:

a collection of classes

getSubTypesOf

public static <T> java.util.Collection<java.lang.Class<? extends T>> getSubTypesOf(java.lang.Class<T> type,
                                                                                   java.lang.String... packageNames)

Gets all sub types in hierarchy of a given type.

getAnnotatedClasses

public static java.util.Collection<java.lang.Class<?>> getAnnotatedClasses(java.lang.Class<? extends java.lang.annotation.Annotation> annotationClass,
                                                                           java.lang.String... packageNames)

getAnnotation

public static <T extends java.lang.annotation.Annotation> T getAnnotation(java.lang.reflect.Method method,
                                                                          java.lang.Class<T> annotationClass)

Extract the annotation from the controllerMethod or the declaring class.

Type Parameters:

T -

Parameters:

method -

annotationClass -

Returns:

the annotation or null

getAnnotation

public static <T extends java.lang.annotation.Annotation> T getAnnotation(java.lang.Class<?> objectClass,
                                                                          java.lang.Class<T> annotationClass)

getDeclaredMethods

public static java.util.List<java.lang.reflect.Method> getDeclaredMethods(java.lang.Class<?> clazz)

Returns an array containing Method objects reflecting all the declared methods of the class or interface represented by this Class object, including public, protected, default (package) access, and private methods, but excluding inherited methods.

This method differs from Class.getDeclaredMethods() since it does not return bridge methods, in other words, only the methods of the class are returned. If you just want the methods declared in clazz use this method!

Parameters:

clazz - Class

Returns:

the array of Method objects representing all the declared methods of this class

See Also:

Class.getDeclaredMethods()

collectNestedAnnotation

public static <T extends java.lang.annotation.Annotation> java.util.List<T> collectNestedAnnotation(java.lang.reflect.Method method,
                                                                                                    java.lang.Class<T> annotationClass)

collectNestedAnnotation

public static <T extends java.lang.annotation.Annotation> java.util.List<T> collectNestedAnnotation(java.lang.Class<?> objectClass,
                                                                                                    java.lang.Class<T> annotationClass)

executeDeclaredMethod

public static <T> T executeDeclaredMethod(java.lang.Object o,
                                          java.lang.String methodName,
                                          java.lang.Object... args)

getResources

public static java.util.List<java.net.URL> getResources(java.lang.String name)

isAssignable

public static boolean isAssignable(java.lang.Object value,
                                   java.lang.Class<?> type)