Tag Archives: programming

SQL and simple polymorphism

Posted on September 25, 2010 by David Megginson

SQL is about tables and sets. Object-oriented programing is about types, subtypes, and polymorphism. There are nasty, nasty frameworks available to try to move between the two worlds (say, by serializing and deserializing Java objects) — this posting, however, is … Continue reading →

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RIP Java, 1995-2010

Posted on August 13, 2010 by David Megginson

Java is dead. A lot of developers have thought they were too hip for Java, but I still liked it. I implemented SAX in Java first of all, and have developed software in Java and encouraged my enterprise customers to … Continue reading →

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Mixing GPL and non-GPL: a different perspective

Posted on June 16, 2009 by David Megginson

Dual-licensing is a popular Open Source business model, especially using the (very restrictive) Gnu General Public License (GPL). Popular opinion, as reflected (for example) in the comments on this blog posting, says that it’s either forbidden or highly questionable to … Continue reading →

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Detecting overzoom in Google Maps

Posted on July 27, 2008 by David Megginson

[Warning: as of 1 October 2008, Google is using an over-simplistic bot detection algorithm, and something as simple as zooming out at regular intervals can trigger it and temporarily block access to Google resources. I recommend waiting until they fix … Continue reading →

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LAMP stack stability

Posted on January 10, 2008 by David Megginson

I’m using a single dedicated server to host ourairports.com, megginson.com, and a couple of minor domains. OurAirports is a database-heavy application using (currently) a MySQL v.5 database hosted on the same server. I’ll offload the database to a separate server … Continue reading →

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Amazon SimpleDB (not very Codd-y)

Posted on December 14, 2007 by David Megginson

This might be of interest: Amazon SimpleDB Amazon’s announcement Dear AWS Developers, This is a short note to let a subset of our most active developers know about an upcoming limited beta of our newest web service: Amazon SimpleDB, which … Continue reading →

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First looks at OpenSocial: part 4 (content for persistence data)

Posted on November 8, 2007 by David Megginson

Earlier postings: First looks at OpenSocial: part 1 (URLs) First looks at OpenSocial: part 2 (content for members and friends) First looks at OpenSocial: part 3 (content for activities) I didn’t have time to look at the OpenSocial API yesterday, … Continue reading →

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First looks at OpenSocial: part 3 (content for activities)

Posted on November 6, 2007 by David Megginson

Earlier postings: First looks at OpenSocial: part 1 (URLs) First looks at OpenSocial: part 2 (content for members and friends) This is the third part of a series where I’m working through the OpenSocial specs as I write — that … Continue reading →

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First looks at OpenSocial: part 2 (content for members and friends)

Posted on November 5, 2007 by David Megginson

See also First looks at OpenSocial: part 1 (URLs) This is the second part of a series of postings describing how I’m trying to understand the technical specs for the new Google-led OpenSocial initiative. In the first part, I cut … Continue reading →

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First looks at OpenSocial: part 1 (URLs)

Posted on November 3, 2007 by David Megginson

In a year or two, we’ll know whether the Google-lead OpenSocial initiative was a turning point in the social web or just a weak shot fired across Facebook’s bow. In the meantime, I think it’s worth taking some time to … Continue reading →

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