The publicity that AJAX grabbed over the last half a year is based on closing
the gap between the Web applications and the desktop applications, combining
the "reach" and "rich." At the same time, the gap between the technological
level of AJAX and what corporate developers expect in their modern arsenal is
really astonishing. After all, AJAX is neither a tool nor a platform. There
is no AJAX standards committee or community process in place. While software
vendors are crafting proprietary development platforms on top of AJAX (which
pretty much means "from scratch"), early adopters of AJAX are left on their
In Part 1 (JDJ, Vol. 10, issue 9) we touched on the foundation of AJAX - the
ability to establish script-to-server communication. This is what makes HTML
pages dynamic and responsive. Does it mean we are ready to kick-off our own
version of Yahoo mail? No, ... (more)
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.
This question we get on almost every new client project: “We’re
struggling with handling of null values for numeric data types in Flex/Java
Every time there’s an update, we end up replacing the original nulls with
zeros when the user didn’t actually change that value.
Have you guys come up with a silver bullet for handling numeric nulls?”
Consider a Java method with a Double parameter. You pass uninitialized ... (more)
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?
can establish socket communication between browser-based JavaScri... (more)
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)
Let's face it - rewriting an existing application from platform to platform
is not fun. But many businesses successfully served with PowerBuilder
applications are rewriting parts of PB apps for the Web and maintaining the
same functionality in PowerBuilder and Java, PowerBuilder and C#, etc.
Faced with this problem we decided to create a product called "XML Server
Pages" that uses our DW2Java/DW2Net converters to automatically convert
existing DataWindows into sets of J2EE or .NET objects - ready to run on the
Web. For reporting applications of any complexity, including heavy fina... (more)