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Technology Engineered: September 2007

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Monday, September 24, 2007. JRuby 1.0.1 on Edge Rails 1.2.3.7605. First, visit http:/ jruby.codehaus.org and download the JRuby 1.0.1 binaries. I unpacked them into C: jruby, so C: jruby jruby-1.0.1 is my JRuby "home" directory, and C: jruby jruby-1.0.1 bin is the path to jruby.bat, jirb.bat, and gem.bat. Following Dominic Da Silva's instructions on developer.com. I set my path to include c: jruby jruby-1.0.1 bin and ran:. Ruby 1.8.5 (2007-08-23 rev 4201) [x86-jruby1.0.1]. So far, so good. This runs the ...

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Technology Engineered: December 2007

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Friday, December 21, 2007. JRuby 1.0.3, Rubygems 0.9.5 TypeError. Here's that error again: After updating Rubygems to 0.9.5 (yeah, I know 1.0.0 just came out, but that one does some weird stuff with bin script filenames that I'd rather not deal with right now), trying to install rails gives:. ERROR: While executing gem . (TypeError). Can't convert nil into Array. According to the response I got from Eric on the Rubygems patch. All of those constructor methods call. Def yaml initialize tag, val. So here's...

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Technology Engineered: March 2007

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Tuesday, March 20, 2007. Web Programming, Hobo-style. Today I embark on a great journey. I've been reading about Ruby on Rails since my buddy Jeremiah. In a word: Wow! All the great stuff that I had heard about Rails was true. It was just what I was looking for: a standardized system designed to handle all of the repetitive, tedious tasks that go along with building web applications, like creating data objects with dozens of properties to match your database columns. If it asks you what to do with any sp...

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Technology Engineered: January 2007

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Wednesday, January 03, 2007. Access ASP = Bad. The problem starts to appear when you start programming more complicated databases, such as multiple tables and multiple-step drill-down queries. If you think your script through procedurally, you tend to come up with a process like:. Find all records of table A, and get foreign key bID that points to ID field of table B. For each record in A:. Select * from B where ID=" and A.bID. But what if you need something that's faster and easier than creating a class...

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Technology Engineered: January 2008

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Monday, January 14, 2008. Runnable Java Procs in JRuby. One of the cool features of the JRuby Swing GUI builder library, Profligacy. By the ever awesome Zed Shaw of Mongrel fame) is the Proc#to runnable method that converts procs into a java.lang.Runnable interface that can be passed into any Java method that accepts an instance of Runnable, such as java.lang.Thread.new(). Profligacy's implementation looks something like this:. Include java.lang.Runnable. I prefer doing this instead:. Thistask = r;.

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Technology Engineered: October 2006

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Wednesday, October 11, 2006. The Importance of Cohesion. I haven't gotten to post in a while, because I've been playing catch-up at work. We've lost a number of key people since this past summer, and the rest of us are rushing to pick up the loose ends. So I thought this would be a nice time to not only vent, but also write about the importance of cohesion. Posted by Adam Payne @ 9:42 AM permalink. Links to this post. Web Design plus Programming plus Business minus Bunkum equals The Win.

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Technology Engineered: December 2006

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Thursday, December 21, 2006. The lowdown on Office Web Components. I recently mentioned the possibility of exploring MS Office Web Components as a replacement for server-side Excel automation. It turns out that for my particular problem, it didn't present a solution. Extracting data from Excel on a web server is "difficult.". So how would you do Excel-like things on a server? UPDATE: I forgot to mention that the Office Web Components are going by the wayside. Been able to do the job. Links to this post.

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Technology Engineered: September 2006

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Thursday, September 28, 2006. XPath Trick: Count() Function. For those who use XML to mark up their data, you're probably used to seeing statements such as the one below, that returns a set of nodes that each have a specified child node as per the criteria:. This would return all record. Nodes that are children of the root node, but only if they have a lastname. Child node. If there are any record. Nodes that don't have lastname. Children, they won't be returned in the resulting nodeset. So I had an inte...

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Technology Engineered: October 2007

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Monday, October 15, 2007. Blog Action Day: The Environment. Today's the day when everyone is supposed to blog about the same topic, and this year, it's the environment. Since this blog tends to focus on Ruby programming lately, that makes my focus easy. For those who don't know, the environment is accessible via the constant ENV. For example:. You'll get all your standard environment variables in that Hash, including PATH, which is probably the one you'd use the most. Links to this post.