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  1. Home
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  3. Wayne Beaton's blog

Wayne Beaton's blog

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New Eclipse Corner Article: Implementing Model Integrity in EMF with EMFT OCL

Tuesday, August 1, 2006 - 14:05 by Wayne Beaton

This article illustrates how the EMFT OCL parser/interpreter technology adds to the value of EMF/JET code generation as a foundation for model-driven development (MDD). We will see, with fully functional examples, how a metamodel can be generated from an Ecore model without requiring any post-generation custom code, including complete implementations of invariant constraints, derived attributes and references, and operations.

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Of course, it doesn’t hurt to poke the editor…

Tuesday, August 1, 2006 - 13:56 by Wayne Beaton

Chris took me to task after this posting, exposing an important part of the Eclipse Corner publishing process: if things seem to be stalled, poke me (either directly or with a bugzilla comment).

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45°C and freezing

Tuesday, August 1, 2006 - 11:27 by Wayne Beaton

One of the great things about my job is that it doesn’t really matter where I actually physically work (at least part of the time). I took the opportunity yesterday to spend a few hours watching my kids at hockey camp. It was a little weird sitting in the freezing arena wearing shorts with only my laptop to keep my legs warm, but it was awesome watching my kids zip and zag around on the ice.

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Bugzilla: It’s not just for bugs

Tuesday, August 1, 2006 - 10:46 by Wayne Beaton

I know that I found this a little weird at first, so I can completely understand the confusion around how we use the Eclipse bug system. To summarize: we use it for almost everything. Some projects have discussions entirely captured in the bug tracking system; many of these bugs are concerned with fixing actual problems, but some are discussions around new features. New feature requests can be made in the bug system (do this by specifying “enhancement” for the “severity” of the bug).

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Maybe I’m just easily entertained…

Monday, July 31, 2006 - 11:28 by Wayne Beaton

I use web tools for all my XML editing needs (which, frankly, are many). One feature that I really love is the way that code complete works based on the current contents of the document. If I’ve embedded a <description> element inside a <resource> element, the next time I’m in a <resource> element and hit CTRL-space, one of the options is <description>. All this without a DTD or schema defined. How cool is that?

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Toys in the Attic

Tuesday, July 25, 2006 - 10:44 by Wayne Beaton

When you delete a file in Eclipse, it is deleted from the CVS repository when you commit the change (by committing the folder). But CVS doesn’t destroy the file, it puts it in the ‘attic’. If you ever need to get that file back, you can.

From the context menu for a directory or package, select “Team > Restore from Repository…”. You’ll see:

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Installing Eclipse

Thursday, July 20, 2006 - 15:34 by Wayne Beaton

I decided to update the screen cam that demonstrates how to download and install Eclipse (I made the old one before the Eclipse 3.2 release). The new version replaces the old version, so the old link still works. I’ve decided to tinker with the screen size a little with this one; I changed my resolution to 800×600 to make sure that everything is easy to see.

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Loosely coupled but tightly integrated

Thursday, July 13, 2006 - 23:04 by Wayne Beaton

I was never happy with how tightly coupled my image viewer is to the resources API. It seems to me that an image viewer is a pretty handy, general-purpose thing. The initial implementation can display images contained in files. But images come from other places. Items in an auction have images; so do the results of queries against Flickr.

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Debugging JSPs using Eclipse WebTools

Tuesday, July 11, 2006 - 12:49 by Wayne Beaton

As a general rule, I don’t like to have too much Java code in Java ServerPages (JSP) files. In fact, I’d prefer to have no Java code at all in a JSP. I have two basic reasons (and a collection of less basic reasons)… First, Java code in a JSP tends to be used to provide business logic; business logic doesn’t belong in the view layer and should instead by tucked somewhere behind a servlet.

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Planes, trains,and automobiles…

Thursday, July 6, 2006 - 09:02 by Wayne Beaton

One of the things I really enjoy about traveling in Europe is the train system. They have a vibrant train system; something that we’re missing in North America.

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