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using System;

using Hammock.Extensions;

using Hammock.Validation;

namespace Hammock.Attributes.Validation

{

#if !SILVERLIGHT

    [Serializable]

#endif

    public class RequiredAttribute : ValidationAttribute

    {

        public override string TransformValue(System.Reflection.PropertyInfo property, object value)

        {

            if(value == null)

            {

                var message = "The property {0} is required, but was null.".FormatWith(property.Name);

                throw new ValidationException(message);

            }

            return base.TransformValue(property, value);

        }

    }

}