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Grails – my domain class instance says its class is abstract!
I recently faced a weird problem when using Grails and a domain class hierarchy that contained abstract classes, let’s say: abstract class A { ...} abstract class B extends C { ...} class C extends A {...
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Grails – query or criteria against a string/value pairs map property
Grails has a feature that I find sometimes useful: mapping a simple map of string/value pairs using GORM. That is, given a domain class, if you create a property whose type is Map, and the name of the...
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Grails – Is my bean a singleton?
At an interesting discussion about how to bulk-delete objects in Grails, I suggested using the sessionFactory bean to explicitly flush the session when required. One of the participants was concerned...
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Fish shell – using modules to import functions
I recently decided to give fish shell a try. I’ve always been reluctant to change my shell: bash has certainly its flaws, but it is widely spread. But lately I’m trying to go easier on embracing new...
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Grails – No such property for class:...
Behind that obscure title lies a problem that I recently had with Grails and that consumed half of my morning. The solution was rather simple but finding it was hard for me (although once it has...
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Grails – Hibernate-safe domain class property editor
Grails automatic databinding is super powerful, but, at least in versions 2.2.x and below, is rather obscure and not very-well documented. Sometimes is not clear how a form input should be named...
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Dropbox in docker
I was thinking of an easy way to backup the wp-content directory of my two blogs (the other one being Una Cerveza Al Día ) and Dropbox came to my mind: my space requirements are very modest, even for...
View ArticleGmail Sender – send emails from the command line
I had an itch that needed to be scratched already – in a couple of servers I maintain I had to send a few emails from some scripts, and having to install an SMTP server seemed like an overkill – one...
View ArticleFeed My Files – build a feed from your filesystem
If for whatever reason you need to keep track of the new files being created on a remote filesystem, Feed My Files is your tool. It allows you to create a feed from a given path of the filesystem, and...
View ArticleHuman readable to camel case in Scala
After searching for a simple way to convert a string like I am a nice string (human friendly) into something like IAmANiceString (camel-case) and finding formulas only for the opposite, I decided to...
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