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Victor Rasputnis

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In this excerpt from our book, Rich Internet Applications, we'll cover how to set up large applications intended for Web or, more broadly speaking, distributed deployment. As an example let's consider an enterprise application that consists of hundreds of screens, reports, forms, and dashboards. Accordingly, about a dozen engineers specializing in GUIs, frameworks, data layers, and business domains are working on this application in parallel. Every application "run" in Flex Builder as well as the invocation of the application's MXML file processed by the Web-tier Flex compiler requires an application build. Needless to say, this takes time. The bigger the application, the more time it takes. Developers need a fast process of building and deploying their applications. The application also has to be partitioned for team development both vertically (application screen... (more)

A Complete Application with RPC Communications...

This is a book excerpt from the book RIch Internet applications with Adobe Flex and Java. Configuring the Server-Side Destination and Proxy For security reasons (similar to the Java sandbox concept), Flash clients can only access the domains they come from, unless other servers declare, explicitly or implicitly, trust to SWF files downloaded from our domain by a corresponding record in a crossdomain.xml file. But our portfolio SWF wasn't loaded from finance.yahoo.com, and we aren't allowed to install crossdomain.xml on the Yahoo! servers. We'll use another technique called Flex p... (more)

Flex Best Practices: DTO is the Horseshoe of your Flex Application

Remember this old little rhyme? For want of a nail, the shoe was lost; For want of the shoe, the horse was lost; For want of the horse, the rider was lost; For want of the rider, the battle was lost; For want of the battle, the kingdom was lost; And all for the want of a horseshoe nail. This little poem often comes to my mind as a see increasing number of amateurs perceiving Flex as yet another "library of controls".  The fact is, it is very easy to start coding in Flex. So much that hot-heads get on the coding spree before noticing that Flex is a beautifully crafted framework with pro... (more)

Using Custom Type Marshallers in BlazeDS

I'd like to use this opportunity and invite Flex developers living in Europe to attend our Advanced Flex Master Class in Brussels, Belgium on March 1 and 2, 2010. In my previous post I pointed to the BlazeDS classes that need to be replaced in order to prevent ActionScript Number.NaN from turning into Long or Integer zeroes on the MessageBroker side. The recommendation boiled down to re-jaring flex-messaging-core.jar or placing the modified classes somewhere earlier in the application server's classpath. If neither option is allowed, you may configure your endpoint with the cust... (more)

Meet AJAX: Intelligent Web Applications with AJAX

Browser-based applications are widely used and we like the fact that we can access them from anywhere. But from the users' perspective, the productivity level of Web applications still doesn't approximate the productivity of desktop programs. The good news is the gap is closing: the accumulated potential of multiple technologies has boosted a whole new breed of HTML-based apps that are as powerful as the desktop ones. Meet AJAX. What Is AJAX? The name stands for Asynchronous JavaScript + XMLHTTPRequest and means you can establish socket communication between browser-based JavaScri... (more)