package org.gcube.portlets.widgets.wsthreddssync.shared; /** *
* FieldVerifier validates that the name the user enters is valid. *
*
* This class is in the shared
packing 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.
*
* 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 note 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. *
*/ 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; } }