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Custom XValidationFactory class

The custom XValidationFactory class is extended in this library which allows three custom XBaseValidator to be added to your applications. These are the FunctionValidation, NumberValidation and IntegerValidation classes.

This customer validation factory can be included in your project by setting the ValidationFactory property in the startup properties file as shown in Listing 1

ValidationFactory=net.xoetrope.goodies.validation.ValidationFactory
Validations=validations.xml
StartPackage=net.xoetrope.goodies.validation.test
StartClass=testpage             

An example of the validations file referred to by the Validations property is shown in Listing 2

This file declares a validation for each of the custom validations being handled by the custom XValidationFactory. The type attribute is checked by the factory in order to find out the type of validation to be created. If it doesn't know the type then the construction of the validation is passed over to the super class.

Now a page can be declared which makes use of these validations. A sample page is shown in Listing 3

The page contains three inputs for each of the custom validations. The button calls the checkValidations function of the page and if there are any exceptions they can be seen in the console.

The checkChars function is defined in the TestPage class as shown in The sample checkChars function Listing 4.

package net.xoetrope.goodies.validation.test;

import net.xoetrope.xui.XPage;
import net.xoetrope.swing.*;
import net.xoetrope.xui.validation.XBaseValidator;

public class TestPage extends XPage
{

  public Integer checkChars()
  {
  XEdit testEdit = ( XEdit )findComponent( "funcEdit" );
  if  ( testEdit.getText().indexOf ( "a" ) < 0 ) 
    return new Integer( XBaseValidator.LEVEL_ERROR );
  else 
    return new Integer( XBaseValidator.LEVEL_IGNORE );
  }
}               

Of course this is just a frivolous implementation of the FunctionValidation class but you can see how versatile it can be in XUI applications

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