New & Improved

[zblock]

I've been following the SpringAir sample code for my own web app and ran into a similar problem. The Controller property of the Spring Page class defaults to the page itself when it and the page process instance are null. So a workaround is to change the BookTripController property as follows works:

public new BookTripController Controller
    {
        get 
        {
            if (base.Controller is Page)
                base.Controller = new BookTripController();
            
            return (BookTripController) base.Controller; 
        }
        set { base.Controller = value; }
    }

That will get you past that error, but there are a few others that popped up for me, requiring some commenting out of validation and databinding code...

I haven't gotten SpringAir working, but I did get it to the same error state as my own application - :wink:

The problem I'm now having is that the Process instance for my page is always null... Following the SpringAir example, I'm using the AnthemProcess. What I can't figure out is how the Process is injected into the Page. In the BookTrip web.config, I see how the controller is injected into the process, but I don't see how the process gets into the page...

[Aleks Seovic]

Strange, AnthemProcess works just fine on my dev box, and it sets controller properly on the page.

I'll take a look at it and see if I maybe forgot to include something, although I doubt it, as CVS shows that my local copy is in sync with the repository.

Later,

Aleks

[zblock]

I was able to get my app working (and SpringAir) by setting the Process property of my views as follows:

<object type="TripForm.aspx" parent="standardPage">
        <property name="Process" ref="BookTrip" />
				<property name="TripValidator" ref="tripValidator" />
			</object>

[Aleks Seovic]

Oh, I know what the problem is -- the lack of documentation and explanation on my part :oops:

Once you have process in place, it is the *process* and not the page that you should point your web browser to. In the case of SpringAir2, you need to point the start page to 'BookTrip.aspx' instead of 'TripForm.aspx', as it used to be. That will trigger creation of the process instance and its retrieval on each page request.

The solution you described seems to work, but it really doesn't -- the whole point of the process is that a single instance of the process and controller/presenter should exist for the duration of the process, even though there will typically be many different page instances that use it. That's what enables transparent state management within the process.

In your example, new process instance will be created for each HTTP request, with new, empty state in the controller, so while it *might* work, it really won't be working according to the process semantics.

Sorry about that, I should've made it clear up front that process *is* an IHttpHandler and that you should direct your browser to the process and not to the page within the process.

Regards,

Aleks

[zblock]

That works perfectly! Thanks Aleks. This is very cool. I especially like the Anthem integration...

[Bruno Baia]

Cool !
I gonna give it another try then, i thought there was some synchronisation problems between 'SpringAir.Web' and 'SpringAir2.Web' directory.

-Bruno

[Dimon]

Hi Aleks! Thanks for a help with Start up of SpringAir2. You were right I'm set start up page as BookForm.aspx and didn't read web.config to understand that BookTrip.aspx is start up point of the application. So it works fine but I got one more problem with validator configuration. This is below:

Spring.Objects.InvalidPropertyException was unhandled by user code
Message="'RoundTrip' node cannot be resolved for the specified root context."
Source="Spring.Core"
OffendingPropertyName="RoundTrip"
StackTrace:
at Spring.Expressions.PropertyOrFieldNode.InitializeN ode(Object context) in D:\home\projects\Spring.NET\src\Spring\Spring.Core \Expressions\PropertyOrFieldNode.cs:line 128
at Spring.Expressions.PropertyOrFieldNode.Get(Object context, IDictionary variables) in D:\home\projects\Spring.NET\src\Spring\Spring.Core \Expressions\PropertyOrFieldNode.cs:line 145
at Spring.Expressions.BaseNode.GetValue(Object context, IDictionary variables) in D:\home\projects\Spring.NET\src\Spring\Spring.Core \Expressions\BaseNode.cs:line 99
at Spring.Expressions.Expression.Get(Object context, IDictionary variables) in D:\home\projects\Spring.NET\src\Spring\Spring.Core \Expressions\Expression.cs:line 112
at Spring.Expressions.BaseNode.GetValue(Object context, IDictionary variables) in D:\home\projects\Spring.NET\src\Spring\Spring.Core \Expressions\BaseNode.cs:line 99
at Spring.Expressions.OpEqual.Get(Object context, IDictionary variables) in D:\home\projects\Spring.NET\src\Spring\Spring.Core \Expressions\OpEqual.cs:line 62
at Spring.Expressions.BaseNode.GetValue(Object context, IDictionary variables) in D:\home\projects\Spring.NET\src\Spring\Spring.Core \Expressions\BaseNode.cs:line 99
at Spring.Validation.BaseValidator.EvaluateWhen(Objec t rootContext, IDictionary contextParams) in D:\home\projects\Spring.NET\src\Spring\Spring.Core \Validation\BaseValidator.cs:line 187
at Spring.Validation.ValidatorGroup.Validate(Object validationContext, IDictionary contextParams, ValidationErrors errors) in D:\home\projects\Spring.NET\src\Spring\Spring.Core \Validation\ValidatorGroup.cs:line 100
at Spring.Validation.ValidatorGroup.Validate(Object validationContext, IDictionary contextParams, ValidationErrors errors) in D:\home\projects\Spring.NET\src\Spring\Spring.Core \Validation\ValidatorGroup.cs:line 104
at Spring.Web.UI.Page.Validate(Object validationContext, IValidator[] validators) in D:\home\projects\Spring.NET\src\Spring\Spring.Web\ Web\UI\Page.cs:line 810
at TripForm.OnLoadComplete(EventArgs e) in d:\home\projects\Spring.NET\examples\Spring\Spring Air\src\SpringAir2.Web\Web\BookTrip\TripForm.aspx. cs:line 116
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

If remove validators then it works fine. Could you help me? what is wrong?

Thanks in advance

[Aleks Seovic]

Sorry, I modified expression evaluator a bit recently, and the change requires enum values to be either quoted or prefixed with the enum type name.

All you need to do is add single quotes around RoundTrip in the validator definition and everything should work fine. I will make sure I do the same before I commit the code next time, but in the meantime that would allow you to play with the app.

Regards,

Aleks

[Dimon]

Aleks, Thanks for a quick response! It works fine!

I have add'l question: I think it would be better if I will post found issues to your bag-tracking system (I found component named SPRING-WEB) instead this forum. Does it make sense?

P.S. I would like work with Spring.Web for ASP.NET 2.0

[Aleks Seovic]

Absolutely -- if you find something that you think is a bona fide bug, feel free to enter it into JIRA. That makes it much easier for us to keep track of everything and increses its chances of actually being resolved

Later,

Aleks