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David Chandler's Journal of Java Web and Mobile Development

  • David M. Chandler


    Web app developer since 1994 and former Developer Advocate with Google now residing in Colorado. Besides tech, I enjoy landscape photography and share my work at ColoradoPhoto.gallery.

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Correction: AppEngine Datastore and owned relationships

Posted by David Chandler on November 12, 2009

Last week, I mistakenly wrote that AppEngine Datastore would not retrieve Key fields (representing an unowned relationship) unless you annotated with defaultFetchGroup=”true”, but that it would automatically retrieve properties represented by an owned relationship. This was not correct, as AppEngine Datastore never allows joins. I’ve updated the original post accordingly.

 

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