org.apache.cxf.common.util
Class ReflectionUtil

java.lang.Object
  org.apache.cxf.common.util.ReflectionUtil

public final class ReflectionUtil
extends Object

Method Summary

static Method	findMethod(Class<?> cls, String name, Class<?>... params) Try to find a method we can use.
static <T extends Annotation> T	getAnnotationForMethodOrContainingClass(Method m, Class<T> annotationType) Look for a specified annotation on a method.
static Constructor	getConstructor(Class<?> cls, Class<?>... args)
static Constructor	getDeclaredConstructor(Class<?> cls, Class<?>... args)
static Field	getDeclaredField(Class<?> cls, String name)
static Field[]	getDeclaredFields(Class<?> cls)
static Method[]	getDeclaredMethods(Class<?> cls)
static List<String>	getPackagesFromJar(File jarFile)
static PropertyDescriptor[]	getPropertyDescriptorsAvoidSunBug(Class<?> refClass, BeanInfo beanInfo, Class<?> beanClass, PropertyDescriptor[] propertyDescriptors) create own array of property descriptors to:
static <T extends AccessibleObject> T	setAccessible(T o)
static <T extends AccessibleObject> T	setAccessible(T o, boolean b)

Methods inherited from class java.lang.Object

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

Method Detail

getDeclaredField

public static Field getDeclaredField(Class<?> cls,
                                     String name)

getDeclaredConstructor

public static Constructor getDeclaredConstructor(Class<?> cls,
                                                 Class<?>... args)

getConstructor

public static Constructor getConstructor(Class<?> cls,
                                         Class<?>... args)

getDeclaredMethods

public static Method[] getDeclaredMethods(Class<?> cls)

getDeclaredFields

public static Field[] getDeclaredFields(Class<?> cls)

setAccessible

public static <T extends AccessibleObject> T setAccessible(T o)

setAccessible

public static <T extends AccessibleObject> T setAccessible(T o,
                                                           boolean b)

getPackagesFromJar

public static List<String> getPackagesFromJar(File jarFile)
                                       throws IOException

Throws:

IOException

getPropertyDescriptorsAvoidSunBug

public static PropertyDescriptor[] getPropertyDescriptorsAvoidSunBug(Class<?> refClass,
                                                                     BeanInfo beanInfo,
                                                                     Class<?> beanClass,
                                                                     PropertyDescriptor[] propertyDescriptors)

create own array of property descriptors to:

  - prevent memory leaks by Introspector's cache
  - get correct type for generic properties from superclass
     that are limited to a specific type in beanClass
    see http://bugs.sun.com/view_bug.do?bug_id=6528714
   we cannot use BeanUtils.getPropertyDescriptors because of issue SPR-6063
   

Parameters:

refClass - calling class for class loading.

beanInfo - Bean in question

beanClass - class for bean in question

propertyDescriptors - raw descriptors

Returns:

findMethod

public static Method findMethod(Class<?> cls,
                                String name,
                                Class<?>... params)

Try to find a method we can use. If the object implements a public interface that has the public version of that method, we'll use the interface defined method in case the actual instance class is not public

getAnnotationForMethodOrContainingClass

public static <T extends Annotation> T getAnnotationForMethodOrContainingClass(Method m,
                                                                               Class<T> annotationType)

Look for a specified annotation on a method. If there, return it. If not, search it's containing class. Assume that the annotation is marked @Inherited.

Parameters:

m - method to examine

annotationType - the annotation type to look for.

Returns: