/*
* Copyright (c) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 David Berkman
*
* This file is part of the SmallMind Code Project.
*
* The SmallMind Code Project is free software, you can redistribute
* it and/or modify it under either, at your discretion...
*
* 1) The terms of 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.
*
* ...or...
*
* 2) The terms of the Apache License, Version 2.0.
*
* The SmallMind Code Project 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
* General Public License or Apache License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* and the Apache License along with the SmallMind Code Project. If not, see
* <http://www.gnu.org/licenses/> or <http://www.apache.org/licenses/LICENSE-2.0>.
*
* Additional permission under the GNU Affero GPL version 3 section 7
* ------------------------------------------------------------------
* If you modify this Program, or any covered work, by linking or
* combining it with other code, such other code is not for that reason
* alone subject to any of the requirements of the GNU Affero GPL
* version 3.
*/
package org.smallmind.nutsnbolts.reflection;
import java.io.Serializable;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
public class Setter implements Serializable {
private Class attributeClass;
private Method method;
private String attributeName;
public Setter (Method method)
throws ReflectionContractException {
this.method = method;
if (!(method.getName().startsWith("set") && (method.getName().length() > 3) && Character.isUpperCase(method.getName().charAt(3)))) {
throw new ReflectionContractException("The declared name of a setter method must start with 'set' followed by a camel case attribute name");
}
attributeName = Character.toLowerCase(method.getName().charAt(3)) + method.getName().substring(4);
if (!(method.getReturnType().equals(Void.class) || method.getReturnType().equals(void.class))) {
throw new ReflectionContractException("Setter for attribute (%s) must return void", attributeName);
}
if (method.getParameterTypes().length != 1) {
throw new ReflectionContractException("Setter for attribute (%s) must declare a single parameter", attributeName);
}
attributeClass = method.getParameterTypes()[0];
}
public String getAttributeName () {
return attributeName;
}
public Class getAttributeClass () {
return attributeClass;
}
public Object invoke (Object target, Object value)
throws IllegalAccessException, IllegalArgumentException, InvocationTargetException {
Object[] parameter = {value};
return method.invoke(target, parameter);
}
}