Posts Tagged ‘java’

Most web frameworks are broken

13Jul08

We’ve all been there: fired up the next set of changes in a webapp and navigated through a complex flow, entering fake data for the n-th time only to find a massive exception on the page we’ve been expectantly working on, due to a simple typo:
No such property: ${person.chidl}
Apart from the enormous frustration, the problem [...]


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Static typing for warp-widgets

08Jun08

I have been thinking about this for awhile, currently warp-widgets templates are duck typed. I want to make them statically typed (as crazybob encouraged me to). There are two parts to this.
Part #1
I had intended the widget annotations to be java annotations, which can be used to configure user-widgets dynamically…in the template:

@My(name=”Jeff”)
<div>… </div>
…and in the class:

@EmbedAs(My.class) 
public [...]


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Clearing up misconceptions about Generics

30Apr08

Generics are at once the most welcome, easy to understand and most perplexing feature added to Java since… well ever! I couldn’t imagine life without them, but like anything in type theory they are at times confoundingly opaque. Here are some all-too-common misconceptions about Java Generics and Generic types in general:

Set<Child> is a subtype of [...]


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A lock-free, wait-free, counting table

06Apr08

When consulting with a colleague, recently, I ran into an interesting use case: in order to monitor live performance, we needed to count the number of method invocations on a service (read: EJB/remoted call). Actually, it was a number of such services. The obvious answer was to place an interceptor around each method call, and [...]


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