/*
* Created on 18/apr/2010
*
* Copyright 2010 by Andrea Vacondio (andrea.vacondio@gmail.com).
*
* This file is part of the Sejda source code
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sejda.core.support.util;
import java.lang.reflect.Method;
import java.lang.reflect.Type;
/**
* Utility class used to infer the parameter type of an input method of an input class
*
* @author Andrea Vacondio
*
*/
public final class ReflectionUtils {
private ReflectionUtils() {
// hide
}
/**
* Given a concrete class and a method name, it tries to infer the Class of the first parameter of the method
*
* @param clazz
* @param methodName
* @return the class or null if nothing found
*/
@SuppressWarnings("rawtypes")
public static Class inferParameterClass(Class clazz, String methodName) {
Method[] methods = clazz.getMethods();
for (Method method : methods) {
if (method.getName().equals(methodName) && !method.isBridge()) {
Type[] types = method.getGenericParameterTypes();
for (Type type : types) {
if (type instanceof Class && !((Class) type).isInterface()) {
return (Class) type;
}
}
}
}
return null;
}
}