Laszlo View

[rollatwork]

Oh, and if you haven't already go to the IBM alphaworks site and download the Laszlo IDE. That is of course if you use Eclipse. The plugin is fantastic.

It allows you to do WYSIWYG Laszlo development.

Wish I had it on my previous engadgement. Sigh. Prior to this I was deploying LZX files to my web container and refreshing in my browser.

[spring04]

Thanks Roll.

I know MVC and have used structs. I'm yet to go through Spring MVC documentation. What's XStream for? I'll try to goole as well.

I would like to control the GUI from the back-end i.e. the view should be decided dynamically by the server and this input should be in XML. This is what we need.

I'll also go through the Laszlo documentation regarding "data driven apps" that you mentioned.

Another feature that is a must for our application is to add enclosures from the GUI (lots of them) and upload it to the server. Any thoughts? How is the performance with XML-RPC/XML-HTTP?

Thanks!

[twicet]

Thanks Roll.

I know MVC and have used structs. I'm yet to go through Spring MVC documentation. What's XStream for? I'll try to goole as well.

Thanks!

Xstream serializes java objects to XML and back again.http://xstream.codehaus.org/

[pulse1014]

XmlBeans is also really great for marshalling to and unmarshalling from xml.

http://xmlbeans.apache.org/

[bcottel]

I recently deployed a Laszlo view layer with a Spring middle-tier.
[ . . . ]
I'm currently writing a document that I'll post on the Spring, Laszlo, and Liferay sites that demonstrates the usage of Rich Internet Applications via Laszlo with a Spring middle-tier as JSR-168 compliant portlet.

Hi Roll, have you produced this doc yet? Can I prod you into doing so?

I'm particularly interested in the following architecture: a logical 3-tier 'business' app (CRUD+reporting+some dashboards) that does smart validation--meaning at the tabbing from field-to-field level--on a rich client, but remoted with all non-validation bus. logic & DB on the server. Essentially an ASP (application service provider) model that's scalable and where we could easily swap in different clients as needed.

Originally thinking to do some kind of SWT, Swing, or Spring Rich client for performance-snappiness/native L&F/validation needs, but to design this system so it'd be easy to swap in or change to a web client when/if needed. After looking at Laszlo, I'm now thinking maybe we could cover both needs with that product (that is, stay with just a web client that is "rich enough").

We would be customizing the (rich - web) client for different end-user applications and their "looks" (if not "feels"!) But all the backend would run from the same server(s), though out of different tables in the DB.

Comments? Anyone else doing something similar? Reasons why Laszlo might not work for this kind of ASP app? (I'll also add a note to the Spring Rich Client forum that points to this post.)

Thanks,
Brad

[Martin Kersten]

It is quite an interesting idea to use a shockwave app instead of a Java client. Quite interesting... . Has someone a success story?


Cheers,

Martin (Kersten)

[spindlenine]

I've been looking in to creating client side validation for form fields in Laszlo, which would involve the field-to-field validate-on-tab behavior that is being described.

I was planning on doing this using a Java-based form validation framework that I wrote in-house several years back, which I'm currently revamping. Effectively, you place all your validation and form field description (is each field a text field, radio button, etc.) in to the framework, and it renders the form in to XML or an HTML/Swing GUI, and provides services for syncing changes to the form (through user input) with the form "model" and allowing the model to be validated using the specified rules. (I know there are ways to do this in web frameworks like Struts, Spring MVC, etc., but I needed a solution that was framework independent and easy to use - so I rolled my own).

My plan with Laszlo was to take the XML generated by the form/validation descriptor and write Laszlo utility classes that could replicate the fields and validation locally (using regexs for pattern validation, and maybe RPC calls for validation that requires interaction with the back end, such as checking an ID against a database table). I haven't gotten to this point yet, but I hope to in the next few months with the project I'm presently engaged in.

Is anybody else working with Laszlo and form validation who can share their experiences or thoughts on the subject?

Thanks,

- max

[Andrew Swan]

I'm currently writing a document that I'll post on the Spring, Laszlo, and Liferay sites that demonstrates the usage of Rich Internet Applications via Laszlo with a Spring middle-tier as JSR-168 compliant portlet.

Hi Roll,

I was wondering if you've had a chance to write this document yet? My company is interested in writing Spring/Laszlo apps, and your doco would be really useful...

[pacohernandezg]

Hi,

Is there someone working on a OpenLaszlo View for Spring Web Flow Controller?

We are using Spring Web Flow with Spring Web MVC.

We are also using OpenLaszlo with Spring in other projects (javarpc to invoke services).

We are evaluating the possibility to integrate OpenLaszlo with Spring Web Flow. It looks like the most attractive solution.

Thanks.

Paco.

[ggallego]

Hello pacohernandezg,

Could you give a hint about integrating openlaszlo with spring as a service?

I cant inject my spring services using japarpc because openlaszlo doesnot know about Spring context and do some king of 'create new instance' to the service.

[]'s, Glauber