« Return to Thread: Serialization of DataTable

Re: Serialization of DataTable

by mark.jonkman :: Rate this Message:

Reply (Restricted by the Administrator) | Reply to Author | View in Thread

Some parts of this message have been removed. Learn more about Nabble's security policy.

Sorry for the delay.

When serializing a query from CF the default return type is an ArrayCollection of untyped objects. In Java, I’m going to have to be a tad less “certain” but when I last worked with a Java developer it was returning an ArrayCollection of untyped objects. I’m almost dead certain that all my research at the time pointed to ArrayCollection as the default “replacement” to the old Flash Remoting RecordSet object relative to Flex 2. In CF I discovered last week that the only way to force CF to return an ArrayCollection of typed objects was to add __type__ as a column in the recordset with that column containing a string of the object type in Flex. I personally haven’t tested the theory yet.

Any, that aside, are you saying that it currently works to add the same attribute handling to class members (properties and fields)? Or that you would have to check in a change that would allow it? I was trying the attribute last week and it was throwing an error in Visual Studio. Perhaps I had an outdated build.

I’m not in an instantaneous hurry, if you’re planning a release in the next week or so I can wait. Right now I’m just prototyping client side code and doing mockups of the GUI before I start spending time connecting to the backend.

Thanks Zoli – I’m really enjoying working with FlourineFX.

Sincerely

Mark R. Jonkman

From: fluorine-bounces@... [mailto:fluorine-bounces@...] On Behalf Of Support
Sent: Thursday, March 26, 2009 8:34 PM
To: 'Fluorine Mailing List'
Subject: Re: [Fluorine] Serialization of DataTable

Hi Mark,

Yes, the same attribute handling can be added to class members (properties and fields).

Related to your question "why aren't automatically turned into ArrayCollection"...did you check that CF and Java do this automatically?

For example this conversion table http://livedocs.adobe.com/flex/201/html/ent_services_config_097_08.html#270405 does not even mention what rules the Java RowSet mapping follows.

If you need it urgently then I will commit the required changes to the SVN (a new release is planned soon)

Zoli

From: fluorine-bounces@... [mailto:fluorine-bounces@...] On Behalf Of mark.jonkman@...
Sent: Thursday, March 26, 2009 7:56 PM
To: Flourine Mailing List
Subject: [Fluorine] Serialization of DataTable

Hi

Is there anyway to change the default handling of how DataTables are serialized in FlourineFX.

The [DataTableType("...")] only seems to work with methods and I have classes that I need to send to Flex that have complex data in them including several that have DataTables stored in publicly accessible properties. Thus far my workaround was to write a method that simply serializes a DataTable into a ArrayCollection of Hashtable's so instead of storing a DataTable in the class property I store the ArrayCollection. I've never quite grasped the concept of why all DataTables aren't automatically turned into ArrayCollection of generic objects when passed back from Flourine. In my case, I have to write an Flex app that needs to be completely agnostic to the backend server. We have to create .NET version, ColdFusion and perhaps Java versions of the backend to satisfy the requirements. Thus I need to standardize how DataTables are sent back to match how CF or Java would.

A sample case I face would be:

on Facade calling a method called login(username, password) returning an instance of User if login successful. User contains information about the user, the basics stuff as well as information about what tasks they need to perform today and what parts of the system they have access to. In theory I could call 3 times to the server to do this, but why call the server needlessly when one call would suffice. In an ideal world the concept of the [DataTableType("...")] would apply to public properties as well as methods.

I will admit I'm not a heavy hitter in terms of C# programming so before I start tearing into the source code of FlourineFx or pulling my hair completely out I thought I'd ask.

Sincerely
Mark R. Jonkman

_______________________________________________
fluorine mailing list
fluorine@...
http://fluorine.thesilentgroup.com/mailman/listinfo/fluorine_fluorine.thesilentgroup.com

« Return to Thread: Serialization of DataTable