/*************************************************************************
* *
* This file is part of the 20n/act project. *
* 20n/act enables DNA prediction for synthetic biology/bioengineering. *
* Copyright (C) 2017 20n Labs, Inc. *
* *
* Please direct all queries to act@20n.com. *
* *
* This program is free software: you can redistribute it and/or modify *
* it under the terms of the GNU 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 General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
* *
*************************************************************************/
package act.shared;
/**
* <p>
* FieldVerifier validates that the name the user enters is valid.
* </p>
* <p>
* This class is in the <code>shared</code> package because we use it in both
* the client code and on the server. On the client, we verify that the name is
* valid before sending an RPC request so the user doesn't have to wait for a
* network round trip to get feedback. On the server, we verify that the name is
* correct to ensure that the input is correct regardless of where the RPC
* originates.
* </p>
* <p>
* When creating a class that is used on both the client and the server, be sure
* that all code is translatable and does not use native JavaScript. Code that
* is not translatable (such as code that interacts with a database or the file
* system) cannot be compiled into client side JavaScript. Code that uses native
* JavaScript (such as Widgets) cannot be run on the server.
* </p>
*/
public class FieldVerifier {
/**
* Verifies that the specified name is valid for our service.
*
* In this example, we only require that the name is at least four
* characters. In your application, you can use more complex checks to ensure
* that usernames, passwords, email addresses, URLs, and other fields have the
* proper syntax.
*
* @param name the name to validate
* @return true if valid, false if invalid
*/
public static boolean isValidName(String name) {
if (name == null) {
return false;
}
return name.length() > 3;
}
}