Actionscript 3 :: Structuring System Architecture In A Flex Web Application On A Budget (w/o Java)
May 28, 2010
I started a project a while back using the following architecture from Adobe Developer Article talking about Creating marketing platforms in Flex. I did my first set of coding locally forgetting that my server did not handle Tomcat. So I said okay, and cut some corners and then some other limitation came up and I cut some more corners. Eventually for a good week or two, it was trying to get the project working with making the ends meet. Layers started to merge.
In the end I used a
PureMVC (Presentation/Client) -> ZendAMF (Communication) -> MySql (Data) Layout.
It worked but I never felt as though I had some layer just to take care of all the SQL calls to the data.It just felt hacked together
So should I keep the above setup and just start from the presentation layer and move downwards like they said in the article or is there a better layering (based on a hosting plan that does not handle Java) I could accomplish ?
I'm building a Facebook multiplayer game where the client side is in FLEX and the server side is in Java and I wanted to know if there is a guide on how to build the server clients managing system. When I say server clients managing system, I mean a server which many clients will connect to and will be able to choose between tables to join and play or to create their own table, same way as in texas holdem poker.
I developing an AIR application in Flex that would be dealing with playing different SWFs. I am finding some issues as these SWFs that I am playing are heavy. I find that the animation is not smooth and is causing the graph of CPU usage to go high (my be because single thread architecture of Flex). I am therefore planning to have a multi process architecture for my application. Something like Google Chrome. I have one main application as one process and other SWFs would be playing in separate process but should be seen inside the main application window. How to make it possible in Flex?
My company is building a Flex application that we may need to port to other platforms:
[Code]...
Currently, I'm looking into application frameworks to build upon and I'm torn between pureMVC and Swiz. I LOVE swiz for its simplicity and how it just gives you a way to hook things up and then apply your own patterns. From a flex-only perspective, this is my 1st choice. But, PureMVC is platform-independent and has already been ported over to most of the platforms that are mentioned above. How valuable is this portability? Will it really make our lives significantly easier when it comes to porting and developing/maintaining multiple applications? If so, then it seems like PureMVC is the way to go.
Alternatively, since Silverlight has the most definite business case for porting of our application, maybe we could port Swiz to Silverlight? I'm not too familiar with which AS3 language and Flex framework features Swiz depends on and whether they are available in C#/Silvelright.
how would the 3-tier architecture be applied in a Rich Internet Application?I thougt that flex was presentation, .net web services where busines and informix was data. But then when I started I feel that I must be wrong.
I am creating an app in flash for Android. What would be the correct architecture for this? Would I wrap the flash in Java, and the java would control the adverts and menu?
If so, when, for example, clicking Save on the menu, the java would need to get data (in this case, an image) from the flash app. Is this possible? If so, how? ![enter image description here][1]
I have been asked to design an LCD wall application for a display like the one in this ad. Requirements are that the wall can display full screen video or partition the wall in different sections to display multiple video or images and video. I would like to understand what platform can be used to drive such beasts (what OS? what video card?). I wonder what software platform can drive multimedia on such a scale. Html5 + JavaScript would be OK on a single monitor, but on that scale would it slow down? Flash also is an interesting platform, as it is Air, but, once again, can it scale like that?
I am also considering the server architecture that is needed to drive a set of walls in the same location and the slideshow designer to create storyboards, but this is dependent on what client architecture will be embraced.
I've built a simple flash application that takes a user's photo/image, offers various effects and filters to play with. In the end, the application can write-out the resulting image to a PDF print file (to be purchased and sent to a printer).Currently I'm using PHP to template the web pages, with the Flash app embedded in the body of one of the pages.
I now need to integrate a shopping cart and check-out system, the idea being that the user can play with images, add various images to a shopping cart, at some point choose print sizes for each image, check-out and purchase etc. My app would attached the necessary print files, and email/submit the order to the printer.In researching the various cart systems out there like Zen-cart, Magento, osCommerce, etc.. these all seem to be full featured CMS systems, full websites, that you deploy, customize and skin, add products to etc... a "canned store". But in my case, I'm adding/creating the product at run-time. It's not a traditional store where you browse and select items.
At first glance its not clear to me how I would use one of these systems, how to integrate with my Flash app.... it seems I only want to make use of the shopping cart, customer database portion, payment transaction features.Is it possible to use one of these, using only the checkout and order management through a API? called from my Flash app? or processed via back-end PHP?
I need to disable all the aspects of functionality which access the client file system in a flash/flex application. I started having a look on how to do this. It appears that the package flash.filesystem need to be importated to allow the interaction with the file system. However, I did not find any reference to this package in the application. I am a beginner concerning these technologies so maybe I am missing a point here. Do I need to look into an other direction?
I'm trying to access local file system from Flex web application. I know it is pretty difficult, but I think there must be a way. Is there a way that Flex app can use AIR components or maybe web application can call some AIR module in order to choose files and upload?
Can Flex be used for a desktop application whose business logic is written using Java? Everything I've read about flex uses a remoting or http protocol to communicate with the backend via a J2EE server, so I'm not sure how that would work for a desktop app (unless an embedded j2ee server was running in the app).
I'm just learning about Flex and I'm loving it. Unfortunatly I still have to make the decision on which RIA technology to use and its dependent on, among other things, from the following case: How can we wrap a java applet around a Flex application? More specifically, I would like to wrap/integrate NASA's World Wind applet in a Flex panel, similar to what Adrew Trice did with the Google Earth API.
An alternative would be id Flex would support direct access to the 3D hardware through OpenGL or DirectX. But I do not think that that is the case yet, not even through AIR.
I am able to port much of my application from Flex 35 to Flex 4.0
Next is to show my current system Operating system name (XP Pro, Vista, Linux..etc) along with the service pack level of my system on which my application is running.
I am able to show uo OS name "Windows XP" using "Capabalities.os" in Flex4.0. but not "Professional" or "Pro" exactly. But I could not find an API for showing up the service pack level.
I have to display the content in a label. I tried with Capabilities.cpuArchitecture and System.vmversion, but it shows up some other system data.
What's the best way to secure a Flex-BlazeDS application? I've googled it an several solutions came up.UPDATE after question from jsight:Flex would login, so on the RemoteObject I'll set Credentials I don't know if there comes authentication and authorization with BlazeDS (WebORB for instance does and WebORB looked at BlazeDS for their product) SSL not needed 've seen some links on the internet talking about spring security, so I'll check that out.
I developed an application using flex+java+blazeds with tomcat that provide flex enviroment.I want to deploy my application using tomcat but I can't, how can I deploy my app?
What's out there that lets you do this? Are there any OSS projects or maybe something a little more popular than this:[URL]? This does exactly what I'm suggesting (i.e. cuts out the need for Swing UI for the most part) but for a number of reasons I'd be interested in any better alternatives. alternatives would need to support the Flex SDK.
I am using the same java server given there. and I am creating the XmlSocket in a flex air application. When I run my air application I get a java.net.SocketException connection reset at the java server.
I am struggling to come up with a way to efficiently manage Flex entities that have a many-to-many relationships between their JPA/Java counter parts.[code]Both of these entities can exist independently of each other and both have a 1:M relationship with the other. The relationship is not really owned by one side or the other.Within the application there are Flex UI's that sometimes want to see viewers based on movies and other UI's that want to see movies based on viewers.Currently both the Movies.Viewers and Viewers.Movies collections are lazy loaded by JPA which works fine. The problem is that every time I ask a viewer for it's list of movies, then they all get sent over the wire and then within Flex I end up with a bunch of Movie objects that (often, not always) duplicate the ones I already have there.
It seems inefficient at best and could likely cause errors if the duplicate objects are not dealt with.In my real application I have tons of these types of relationships all over some very large object graphs.It almost seems to me that the lazy loaded object collections need to be turned into eagerly loaded collections of foreign keys which are used to explicitly load objects on the Flex side of things. But this seems like I am writing a JPA provider in Flex! Is the correct answer to never store state in a Flex application? (Yikes)I should add that all my value objects have a UID that is created on the server side, so I could somehow use that to find/remove duplicates on the Flex side. But how?
I have a great idea and I want to build a flex application around a .jar file. Is there a way I can go by embedding a jar file into the flex application?
Currently we are in the design phase of an application that will allow two users to communicate with each other using chat and video (with audio), the application is a web application that currently is a java web app with Spring and hibernate, but we want to incorporate video and chat between two users and we are evaluating the options to developing it, so far we have two choices, either develop a Flex UI that leverages its video and chatting capabilities through Red5 or something like that and communicates with the Spring app using BlazeDS or a completely java based approach using (maybe) JMF and/or applets to achieve the video and chat interaction. The question is, which would be the most scalable approach to develop such an application?, what would be the approach that is the least intrusive from the end user perspective?
I don't know really well the diference between AIR and FLEX, i do with Java tought, My question is that I want to build an application to run in local mode, but maybe in the future I want it to be available trought the web, The basic sequence diagram is the following: So I want the client to connect to a server for login information, and for storing some data, and I don't know wich one of the three technologies is the best..
I'm developing an application for the Blackberry Playbook using Flash Burrito 4.5 and Flex. I'd like to create a file browser to allow users to load images from the local system into the application. I followed this example [URL] When I click on the Load Image button in the simulator however, the file browser pops up but tells me that "no file was found with the specified filter", even though I don't specify any filter or even if I specify a . filter.
I know it is possible to develop a full flex application using AIR for android but what I need is to embed a flex component into an already existing classic java android application.
I found some flash players in java but they all either require a JFrame or include of specific windows dlls.
I am looking for an approach that will allow me to (somehow) dynamically pass the server name, server port, and web context to my Flex client so it can create a ChannelSet for it's RemoteObjects to use. These three properties are, of course, readily available to my Java server-side code so I just need a way to get them to the client.
By default, Adobe says you should compile your Flex application against the server configuration file "services-config.xml". This is a highly inflexible practice that Spring says should be avoided (I agree).
One popular approach is to use Flex's http service to download an XML configuration file. I like this idea, but I don't want to hard-code an XML file and keep it inside my WAR file. Is there a way to dynamically generate this from Java code?somehow use flashvars to pass the properties in from the containing HTML page to the SWF file. But again, I don't want to hard code them into the HTML page. Is there a way (maybe with Javascript?) to dynamically set the value of these when the page loads?
I have an Application consisting of a Java Server part and a Flash/Flex client, both communicate via BlazeDS. In order to have the same typed Objects on both sites, I use the GAS3 code generator (used by flex-mojos).But now I am facing the problem of handling nullable Integers. The problem is that I have an Object (A) which contains a foreign key ID which is reference an optional Object B. - But I only send the ID to the flex client.On the Java site it is easy:
class A { private Integer bFk; getter/setter }
But on the flex client side, bFk is of type int. And a Flash int can not be null. So the remoting mechanism converts the Java null Integer to 0. After sending it back to the server, the Java bFk becomes 0 even on the Java side. - That is not acceptable, because I need to separate 0 and nullMy first workround is using not a Integer on the Java side, but an new Class NullAbleID, which works a bit like a wrapper/adapter, that wrap an internal int where -1 represent null (I can use -1 for null, because real id will be negative). But when I would using this it means I have to replace all Java Integer ids, by this NullAbleID class.
