Package io.hawt.util

Class ReflectionHelper

java.lang.Object

io.hawt.util.ReflectionHelper

public final class ReflectionHelper
extends Object

Constructor Summary

Constructors

Constructor	Description
ReflectionHelper()

Method Summary

Modifier and Type	Method	Description
static boolean	hasAnnotation(AnnotatedElement elem, Class<? extends Annotation> annotationType, boolean checkMetaAnnotations)	Checks if a Class or Method are annotated with the given annotation
static boolean	hasMethodWithAnnotation(Class<?> type, Class<? extends Annotation> annotationType, boolean checkMetaAnnotations)	Returns true if the given type has a method with the given annotation
static Object	invokeMethod(Method method, Object instance, Object... parameters)	A helper method to invoke a method via reflection and wrap any exceptions as RuntimeException instances
static <T> T	newInstance(Class<T> type)	A helper method to create a new instance of a type using the default constructor arguments.

Methods inherited from class java.lang.Object

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

Constructor Details

ReflectionHelper

public ReflectionHelper()

Method Details

newInstance

public static <T> T newInstance(Class<T> type)

A helper method to create a new instance of a type using the default constructor arguments.

invokeMethod

public static Object invokeMethod(Method method,
 Object instance,
 Object... parameters)

A helper method to invoke a method via reflection and wrap any exceptions as RuntimeException instances

Parameters:

method - the method to invoke

instance - the object instance (or null for static methods)

parameters - the parameters to the method

Returns:

the result of the method invocation

hasMethodWithAnnotation

public static boolean hasMethodWithAnnotation(Class<?> type,
 Class<? extends Annotation> annotationType,
 boolean checkMetaAnnotations)

Returns true if the given type has a method with the given annotation

hasAnnotation

public static boolean hasAnnotation(AnnotatedElement elem,
 Class<? extends Annotation> annotationType,
 boolean checkMetaAnnotations)

Checks if a Class or Method are annotated with the given annotation

Parameters:

elem - the Class or Method to reflect on

annotationType - the annotation type

checkMetaAnnotations - check for meta annotations

Returns:

true if annotations is present