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Category Archives: Code
Announcing Grails Constraints Custom Domain Constraint Plugin
I’ve released my first public Grails Plugin today. The Grails Constraint plugin gives you the ability to create custom Constraints that you can apply to your Domain classes to validate them. These are applied and act just like the built … Continue reading
Struts2 Map Form to Collection of Objects
The Struts2 documentation contains examples that are often basic at best which can make it challenging to figure out how to do things sometimes. I was working on creating a form that would allow me to select values from a … Continue reading
Password Strength Validation with Regular Expressions
Regular Expressions are both complex and elegant at the same time. They can be made to look like someone was just randomly hammering on their keyboard. They are also an incredibly efficient and elegant solution to describing the structure of … Continue reading
Scala and Adding New Syntax
One interesting thing about some languages is their support for adding new syntax. While all languages have the ability to add new functions or types some have specific properties that make it easy to add what looks like new built-in … Continue reading
Grails Embedded Classes ClassCastException
Using ORM tools allow you to map the data to a database independently of how your object model looks. Grails supports one-to-many and one-to-one relationships if you want to have the data in different table. But what about when you … Continue reading
Update Table Data in Grails using Ajax Calls
Using Ajax for simple forms can offer users a very clean, simple and fast way to input data. I came across a situation recently where I was looking into replacing a document based workflow with an application. The documents themselves … Continue reading
Using Quartz.NET, Spring.NET and NHibernate to run Scheduled Tasks in ASP.NET
Running scheduled tasks in web applications is not normally a straightforward thing to do. Web applications are built to respond to requests from users and respond to that request. This request/response lifecycle doesn’t always match well to a long running … Continue reading
Using Ruby Subversion Bindings to Create Repositories
Subversion has a default Web UI that is served up by Apache if you run Subversion that way. It is pretty boring and read-only. Then there are things like WebSVN that make it less boring, but still read-only. I got … Continue reading
DRY your CruiseControl.NET Configuration
Don’t Repeat Yourself (DRY) is one of the principles of good software development. The idea is that there should ideally be one and only one “source of knowledge” for a particular fact or calculation in a system. Basically it comes … Continue reading