I started reading the newest version of the book last week, and I loved the bit about services. That applied immediately to the project I'm working on, so I...
Hi, In my application i am exposing an object model for programmers ,and i am looking for a way in which i can delay object saving as much as possible. I am...
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iheman Anderson
iheman_anderson099@...
Aug 20, 2003 9:01 am
77
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iheman Anderson
iheman_anderson099@...
Aug 20, 2003 9:05 am
78
Hello All, Eric suggested that parts of the following, from an email I sent him, may be of general interest to this group, so here goes. Nice to meet you all....
Having just joined the group, I'm looking at the old traffic, and I think this is an interesting thread worth resurrecting. My experience agrees with Eric's...
I think your point is well taken. The domain model provides the language in which use cases can be stated with precision. I like your examples. 'Work Order'...
I don't think it should be considered a true statement that "J2EE does not offer much support to the domain-centric type of application". First of all, J2EE is...
Just using session beans for the distributed services, and POJOs for the domain model does simplify the development, and serializable POJOs solve the "entity"...
In discussions with someone else at work the other day i had an interesting insight I thought I'd share with the group. It's kinda long but stick with it. I'm...
Eric, Congratulations on the publication of Domain Driven Design. I'm noticing it on sites throughout the internet and can't wait until I get my copy of it....
I second that. Congrats!!! David Vydra www.testdriven.com ... From: "Jordan Matthiesen" <jordan_matthiesen@...> To: <domaindrivendesign@yahoogroups.com> ...
Well, thank you all for the nice comments. I am excited that it is finally here. The books should start appearing in stores any time now. Early next week,...
... Not in an undistributed architecture, where HTTP is the communication protocol into the VM where the POJOs live. ... In my opinion the data mapper is...
Jim- What Randy said.... (and then another comment inline below) ... implemented with entity beans instead of POJOs, we would have to maintain at least 4X the...
... If I may add an additional qualifier, how about in production over many releases, with good performance, scalability, availability, and development...
I also agree with everything Randy said. I was just trying to point out what CMP beans might add for value in certain (perhaps infrequent) situations. "Dave...
... out ... I'm with that. Actually it would be really interesting to understand the state of CMP, based on empirical evidence provided by practitioners not...
An idea I'm toying with, and on which I'd appreciate the thoughts of this group, is representing the domain using XML Schema (XSD). The application I'm...
An XML schema can describe the data attributes and relationships of entities and value objects, but it cannot capture their behavioral responsibilities. In...
Hi, A friend of mine pointed me to this group after seeing the presentation that I have given at various user groups being discussed. Glad you felt some of the...
... No problem - we object database guys have got to stick together ;) ... The funny thing is, the previous architects at my company had that pattern - there...
Hi Jordan- I have some direct experience with the relationship between domain models and XML Schemas, so maybe I can speak to your idea a bit. For the past...
Thanks for the response. The main thing I'm looking at using XSD for are purely schema related items; a generic way of knowing how entities are related and...
Can an object that doesn't directly implement responsibilities implied in the Ubiquitous Language truly be considered a domain object? Responsibility-driven...
Jordan- When I said: "So, in summary, I have done parts of what you suggest but in practice I have found that, if you are committed to the use of behaviorful...
... in ... tree ... I've been on teams that have built systems that are very similar to what you describe. I also know of a few others that are doing similar...
It sounds like it would be best to leave the domain objects as actual objects, but maybe generate an XSD from them to facilitate other tasks such as tools for ...
There's possibly a middle ground where domain objects with rich relationships and behavior (functional locality) are accessed and manipulated through a service...
