view flys-client/src/main/java/de/intevation/flys/client/shared/FieldVerifier.java @ 4241:49cb65d5932d

Improved the historical discharge calculation. The calculation now creates new HistoricalWQKms (new subclass of WQKms). Those WQKms are used to create new facets from (new) type 'HistoricalDischargeCurveFacet'. The chart generator is improved to support those facets.
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 24 Oct 2012 14:34:35 +0200
parents ba1b27b7d282
children
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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;
  }
}

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