September 2003 - Posts
Found www.littleguru.net : OPF.Net
The Object Persistence Framework for .Net (OPF.Net) is a complete set of classes that implement an object-relational mapping strategy for object oriented access to traditional relational database management systems and other types of persistent storage types such as XML files. OPF.Net has been designed and implemented for practical use in small to medium size projects and is currently being successfully used in several projects.
OPF.Net is based on a paper written by Scott W. Ambler.
Issues that are addressed in that paper:
- Kinds of persistence layers
- The class-type architecture
- Requirements for a persistence layer
- The design of a persistence layer
- Implementing the persistence layer
- Buy vs. build
- Doing a data load
- EJB and persistence
- Supporting the persistence layer
Frans was fast!
http://www.llblgen.com/pages/DownloadDemo.aspx for the demo app.
The demo comes with both a clean and a filled Northwind project. The filled one contains entities and example typed lists. The demo has all LLBLGen Pro functionality, except for creating new projects or refreshing the catalog schema's.
It comes with the SqlServer driver, the full template sets for C# and VB.NET, full documentation and a demo license that doesn't expire, so you can take your time to decide if LLBLGen Pro is the tool you were looking for.
I just downloaded it, will check all out this week and I'm sure I'll order by the end of the week. If this is what it seems, this will save me hours of work each time! And it's cheap!
Guess I will spend more time on another review later.
Frans Bouma has been working (is in crunch-mode) on LLBLGen Pro for some time and I'm really looking forward to the release. LLBLGen Pro is the big brother of the DAL generator LLBLGen and generates a complete O/R mapper.
Below is an excerpt of his blog in June when he announced about version 2.
Next Monday is the official release date!
At the left you see the entities found automatically by the tool and all the relationships which are detected and added automatically (in other words: you add all these entities and their relationship definitions with 2(!) mouseclicks). In the middle you see the current state of the entity definition editor (not finished yet). Any change made is reflected directly in the project explorer at the left, everything related is updated, including the relations. At the right you see the catalog explorer, which lets you browse through all the schemas in the catalog of the project, including all tables, fields, stored procedures, resultsets and views.