Mercurial > dive4elements > river
view flys-client/src/main/java/de/intevation/flys/client/shared/FieldVerifier.java @ 5788:b5d20b3dab4e
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author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Tue, 23 Apr 2013 10:47:29 +0200 |
parents | ba1b27b7d282 |
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package de.intevation.flys.client.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 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. * </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; } }