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43 lines
1.5 KiB
Java
43 lines
1.5 KiB
Java
package org.gcube.portlets.user.geoportaldataviewer.shared;
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/**
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* <p>
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* FieldVerifier validates that the name the user enters is valid.
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* </p>
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* <p>
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* This class is in the <code>shared</code> packing because we use it in both
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* the client code and on the server. On the client, we verify that the name is
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* valid before sending an RPC request so the user doesn't have to wait for a
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* network round trip to get feedback. On the server, we verify that the name is
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* correct to ensure that the input is correct regardless of where the RPC
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* originates.
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* </p>
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* <p>
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* When creating a class that is used on both the client and the server, be sure
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* that all code is translatable and does not use native JavaScript. Code that
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* is note translatable (such as code that interacts with a database or the file
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* system) cannot be compiled into client side JavaScript. Code that uses native
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* JavaScript (such as Widgets) cannot be run on the server.
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* </p>
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*/
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public class FieldVerifier {
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/**
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* Verifies that the specified name is valid for our service.
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*
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* In this example, we only require that the name is at least four
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* characters. In your application, you can use more complex checks to ensure
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* that usernames, passwords, email addresses, URLs, and other fields have the
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* proper syntax.
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*
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* @param name the name to validate
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* @return true if valid, false if invalid
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*/
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public static boolean isValidName(String name) {
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if (name == null) {
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return false;
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}
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return name.length() > 3;
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}
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}
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