org.apache.struts2.convention

Class ReflectionTools

java.lang.Object

org.apache.struts2.convention.ReflectionTools

public class ReflectionTools
extends Object

This class has some reflection helpers.

Constructor Summary

Constructors

Constructor and Description
ReflectionTools()

Method Summary

Modifier and Type	Method and Description
static boolean	containsMethod(Class<?> clazz, String method, Class<?>... parameterTypes) Determines if the class given contains the method.
static <T extends Annotation> T	getAnnotation(Class<?> clazz, String methodName, Class<T> annotationClass) Retrieves the annotation from the given method in the given class.
static List<Class<?>>	getClassHierarchy(Class<?> clazz) Return the list of parent classes in order (Object will be at index 0)

Methods inherited from class java.lang.Object

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

Constructor Detail

ReflectionTools

public ReflectionTools()

Method Detail

containsMethod

public static boolean containsMethod(Class<?> clazz,
                                     String method,
                                     Class<?>... parameterTypes)

Determines if the class given contains the method.

Parameters:

clazz - The class to check for the method.

method - The method name.

parameterTypes - The parameter types of the method.

Returns:

True if the method exists, false if not.

getAnnotation

public static <T extends Annotation> T getAnnotation(Class<?> clazz,
                                                     String methodName,
                                                     Class<T> annotationClass)

Retrieves the annotation from the given method in the given class.

Type Parameters:

T - type of annotated class

Parameters:

clazz - The class.

methodName - The method.

annotationClass - The annotation to get.

Returns:

The annotation or null if it doesn't exist.

getClassHierarchy

public static List<Class<?>> getClassHierarchy(Class<?> clazz)

Return the list of parent classes in order (Object will be at index 0)

Parameters:

clazz - class to process

Returns:

hierarchy of classes