Category Archives: WebObjects

Posts about the WebObjects platform, the apple framework for building web applications.

Dr. Optimistic Locking

Posted on April 13, 2008 by Miguel Arroz

or How I learned to stop worrying and lock the EOObjectStoreCoordinator So those of you who read the WebObjects Developer mailing list know I’m a bit obsessed about concurrency issues. Namely concurrent data write operations, specially when you have lots … Continue reading →

Posted in WebObjects | 3 Comments

drawImage performance on Leopard

Posted on February 27, 2008 by Miguel Arroz

A not very fast but handy way to downscale images in a WebObjects application is using Java 2D APIs, with code like this: BufferedImage reducedImage = new BufferedImage(newX, newY, BufferedImage.TYPE_INT_RGB); Graphics2D g = reducedImage.createGraphics(); g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC); g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_SPEED); … Continue reading →

Posted in Apple, Java, Mac OS X, WebObjects | 2 Comments

Avoid escaping URLs in Apache rewrite rules

Posted on January 24, 2008 by Miguel Arroz

Today we started hacking some Apache rewrite rules to make some URLs a little more friendly. All of the URLs we are rewriting are entry points for our application, which in the WO world means direct actions. All of them … Continue reading →

Posted in UNIX, WebObjects | Leave a comment

A decent XML validator

Posted on January 20, 2008 by Miguel Arroz

As written on all the good practice books about development, I write my applications ready for localization. To do that in WebObjects, one should put all the localizable strings in a strings file. In WebObjects applications, a strings file may … Continue reading →

Posted in WebObjects | 3 Comments

Profiling WebObjects applications

Posted on November 30, 2007 by Miguel Arroz

Recently I had to profile a WO application for memory leaks (more exactly, unintentional retention of objects that prevented them from being garbage-collected). Some quick notes: Eclipse TPTP will not work on Mac OS X. Period. Although Eclipse allows you to … Continue reading →

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Welcome to the Leopard WebObjects mess

Posted on October 30, 2007 by Miguel Arroz

So, you thought Leopard and WebObjects 5.4 would bring some good news to WebObjects developers, right? Well… so did I. I’m not even going to talk much about Leopard itself. It’s clearly an unfinished product, with dubious interface “improvements”, and … Continue reading →

Posted in WebObjects | 7 Comments

Recovering from optimistic locking exceptions

Posted on August 17, 2007 by Miguel Arroz

WARNING: the solution presented in this article is wrong. It’s a partial solution only, it won’t always work, and you may screw up your data. To see why, check my second article on this issue. There are many situations, in … Continue reading →

Posted in WebObjects | 2 Comments

WebObjects survey

Posted on June 29, 2007 by Miguel Arroz

Pascal Robert has just setup an online survey for WebObjects developers. The survey is short and direct2thePoint :) so you won’t spend more than 5 minutes on it. The results will be delivered to Apple, to help them focus their … Continue reading →

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