Maven 2 is out for quite some time now. This week I decided to try to migrate a project we work on to maven 2. Here’s a part of what I ran into while migrating to maven 2:

(more...)

Filed under General, Java, Maven | 2 Comments »

One of the main concerns of a good ORM, in addition to identity and scope handling, is collection mapping. Hibernate has a lot of ability in this area. In this blog I’ll show a variety of collection-mappings.

(more...)

Filed under Hibernate, Java | 5 Comments »

Non-invasive Audit logging

Which developer hasn't worked on a project where, at some point in time before the final delivery, some guy from maintenance wakes up and asks the development team whether they can perform audit logging... Specifically he wants to have a "detailed log". It should contain the IPAddress of the user, his login name, and some information about which actions he performed and what the results were...
(more...)

Filed under Java | 5 Comments »

At my current project we have a very detailed analysis model. Actually, detailed doesn't begin to describe it. the model describes over 200 classes. One of the many problems with such an extended analysis model is that there is no room for the developers to interpret the business model and figure out the technical design that fits it best. Implementing the classes that the analysis model describes with their properties and associations is complicated enough, and then the operations and services that are based on these classes will still need to be designed and implemented. This leads to developers simply typing out the classes as the Analysis model describes them.

One striking example is where a many to many association acquires attributes. Let's look at an example.

(more...)

Filed under Java | 1 Comment »