synergynet3.web.apps.numbernet.shared

Class FieldVerifier

java.lang.Object

synergynet3.web.apps.numbernet.shared.FieldVerifier

public class FieldVerifier
extends java.lang.Object

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.

Constructor Summary

Constructors

Constructor and Description
FieldVerifier()

Method Summary

Methods

Modifier and Type	Method and Description
static boolean	isValidName(java.lang.String name) Verifies that the specified name is valid for our service.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FieldVerifier

public FieldVerifier()

Method Detail

isValidName

public static boolean isValidName(java.lang.String name)

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.

Parameters:

name - the name to validate

Returns:

true if valid, false if invalid