Data objects are the new orange! So I am continuously coding data objects and I find myself writing a lot of repetitive comparison code: ` public int compareTo(Object other) { if(other == null) return -1; Car otherCar = (Car)other; if(myColor == null && otherCar.getColor() != null) return -1; if(myColor.…
Originally, the Glazed Lists demo app would parse a file called "issues.xml" each time it was run. I got "issues.xml" by exporting my Issuezilla database from java.net. This worked okay, but the exported XML included everything in the database including attachments. Of course…
There was a recent bug in Glazed Lists that was difficult to plan for. Consider this: "S", a source list "F1", a filtered transformation of "S" "F2", a filtered transformation of "S" "FF", a filtered transformation of "…
From ClientJava.com I found a link to TableModel Free, a framework that allows you to "Free yourself from the burden of the TableModel". TableModel Free reminds me of Glazed Lists: Decorators are used to make the Java Collections observable. It includes a TableModel that observes such a…
Time for a complaint about how SQL deals with NULLs. CREATE TABLE colas ( brand VARCHAR(32) ); INSERT INTO colas ( 'Pepsi' ); INSERT INTO colas VALUES ( 'Coke' ); SELECT * FROM colas WHERE brand <> NULL; The above select statement does not return { 'Pepsi', 'Coke' }. Instead, it returns 0 rows. This is because I should…
EJBs are good. But here's something lame: Throwing an unchecked exception (ie. RuntimeException) causes the current transaction to be rolled back. Throwing a checked exception (ie. a declared exception) does not roll back the current transaction. I never throw any exception from my code that does not require a roll…
Today I tried for a few hours to get Xandros to burn some DVDs on my new burner. It was grumpy so after two DVD-coasters I threw in the towel and installed Windows XP. It's a decent alternative to Linux but it has a crappy shell and its SMB client…
I've been thinking of starting a tech-focused weblog for a long time now. Well, consider this "Hello. World". My intention is to talk about Glazed Lists stuff mostly here, and perhaps some other Java stuff. Personal rants will continue to be on swank.ca.…