Comments on: Tip: Validation with a MultiValidator http://eclipsesource.com/blogs/2009/02/27/databinding-crossvalidation-with-a-multivalidator/ Eclipse Equinox OSGi Fri, 03 Feb 2012 14:17:31 +0100 hourly 1 http://wordpress.org/?v=3.1.4 By: Matthew Hall http://eclipsesource.com/blogs/2009/02/27/databinding-crossvalidation-with-a-multivalidator/comment-page-1/#comment-883 Matthew Hall Thu, 12 Mar 2009 23:24:35 +0000 http://eclipsesource.com/blogs/?p=321#comment-883 Another cool thing about MultiValidator is that it helps you suspend target-to-model updates until validation passes. In the above example, we can prevent the model period start and end from being updated with invalid values. If you create the PeriodValidator after startObservable and endObservable but before the bindings, you can: context.bindValue(     periodValidator.observeValidatedValue(startObservable),     BeansObservables.observeValue(this.period, Period.PROP_START) ); context.bindValue(     periodValidator.observeValidatedValue(endObservable),     BeansObservables.observeValue(this.period, Period.PROP_END) ); Another cool thing about MultiValidator is that it helps you suspend target-to-model updates until validation passes. In the above example, we can prevent the model period start and end from being updated with invalid values. If you create the PeriodValidator after startObservable and endObservable but before the bindings, you can:

context.bindValue(
    periodValidator.observeValidatedValue(startObservable),
    BeansObservables.observeValue(this.period, Period.PROP_START) );
context.bindValue(
    periodValidator.observeValidatedValue(endObservable),
    BeansObservables.observeValue(this.period, Period.PROP_END) );

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