com.github.ruediste.salta.standard.ReflectionUtil Maven / Gradle / Ivy

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Core of the Salta Framework. Provides most of the infrastructure, but no API

There is a newer version: 1.1

package com.github.ruediste.salta.standard;

import java.lang.annotation.Annotation;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;

public class ReflectionUtil {

    private ReflectionUtil() {
    }

    public static String getPackageName(Class clazz) {
        return getPackageName(clazz.getName());
    }

    public static String getPackageName(String classFullName) {
        int lastDot = classFullName.lastIndexOf('.');
        return lastDot < 0 ? "" : classFullName.substring(0, lastDot);
    }

    public static Annotation createAnnotation(Class annotationClass) {
        return (Annotation) Proxy.newProxyInstance(annotationClass.getClassLoader(), new Class[] { Annotation.class },
                new InvocationHandler() {
                    @Override
                    public Object invoke(Object proxy, Method method, Object[] args) {
                        return annotationClass; // only getClass() or
                                                // annotationType()
                        // should be called.
                    }
                });
    }

}