Comments on: DFS Object service consumer #2a

By: Craig Randall

Craig Randall — Wed, 19 Nov 2008 18:41:43 +0000

Hi John. You don’t install DFS onto Content Server per se. You install DFS into a JEE-compliant application server. DFS 6.5 supports Content Server versions 5.3, 6.0 and 6.5, including service packs. In order to maintain separation between Content Server methods running in the Content Server’s embedded application server (i.e. Java Method Server) and also to independently scale your business services based on consumer demand, it’s recommended that you deploy DFS into its own application server or server farm. So, while you can deploy DFS as part of a Content Server installation, you will typically deploy DFS via its standalone, cluster-ready installer that leverages the JBoss application server, or you will deploy DFS into your JEE-compliant application server of choice (e.g. emc-dfs.ear into WebLogic, WebSphere, etc.). Cheers…

By: jgerven

jgerven — Wed, 19 Nov 2008 08:33:31 +0000

Craig,
Can i install DFS 6.5 on a content server 6.0 SP1? and use the extra services, or do i also have to install content server 6.5 itself?

By: Craig Randall

Craig Randall — Wed, 12 Nov 2008 05:09:59 +0000

That's right. The top code above (i.e. after "Implement your button click handler as follows:") is different than the code after "Implement your button click handler as follows:" in the preceding post. So the "fixes" captured to the end of this post, plus the code in "2b" post are what is captured in the download available here. Cheers...

By: CorneliaDavis

CorneliaDavis — Wed, 12 Nov 2008 05:01:55 +0000

Thanks Craig. One follow up – I realize that #2b “fixed” #2a but what I was really referring to were the fixes at the bottom of #2a. The code at the top of #2a was not taken from the prior post, right? It was crafted anew just for post #2a, right?

By: Craig Randall

Craig Randall — Wed, 12 Nov 2008 01:13:47 +0000

No subtlety was intended. I suspect that it’s a matter of context (i.e. whether the series of three posts resonates or not). My original intent was to show an example of service consumption using the productivity layer (PL) and then show the same example sans PL. I decided to break the second example into two parts as a way of promoting what the PL does and therefore what the consumer developer must do instead when there is no PL. Although the “2b” post “fixes” the “2a” post, I wouldn’t literally look at the changes as fixes per se. Instead, I characterize PL-vs.-no-PL as follows: PL is all-inclusive service on behalf of the consumer developer while no-PL requires the consumer developer to understand the a la carte “menu” and take responsibility for realizing what’s needed to consume services. Thanks for the feedback.

By: CorneliaDavis

CorneliaDavis — Wed, 12 Nov 2008 00:27:44 +0000

Craig, I’m afraid that I might be missing some subtlety. Why did you first craft the code at top and then fix it below? In other words, why not have written it correctly right from the onset? Or is the point that the initial code is what you could write if using the productivity layer but in this case have to make up for not using it with the “FIX”es?

By: fsudrew

fsudrew — Fri, 10 Oct 2008 13:41:32 +0000

I did find it helpful. I knew that all the service implementation development is currently limited to java which is fine. We are just using the WCF for service consumer development such as calling get and view to build our application. All were trying to do is call the out of the box services from Documentum, but we are having trouble with the view service call within the WCF framework.

By: Craig Randall

Craig Randall — Thu, 09 Oct 2008 20:32:46 +0000

Thanks, Drew, for your comment. Did you find this 2-part, WCF-based post helpful (i.e. you’re asking for more examples like this)? To be clear, service implementation development using DFS is limited today to Java. That is, you can currently only use WCF for service consumer development. Are you writing a service consumer (application) ? Are you trying to compose a solution that integrates DFS-based services and external WCF-based services? Other?

By: fsudrew

fsudrew — Thu, 09 Oct 2008 20:21:24 +0000

A project I am on is trying to implement services using WCF and is having some difficulty getting it to view a document by object_id. The documentation examples are limited in using WCF with DFS. It would be great if you or EMC could post more examples using WCF.

By: Developing with DFS in an IDE | Craig's Musings

Developing with DFS in an IDE | Craig's Musings — Wed, 03 Sep 2008 15:27:38 +0000

[...] Essentially we’re working together to promote more standard developer workflow and development lifecycle by embracing tools developers already use to build services. While WTP assumes Eclipse and Composer is indeed powered by Eclipse, that doesn’t mean that Eclipse is the only IDE for Enterprise Content Service development. We’re working on changing the nature of the DFS SDK, too, to better emphasize, for example, how to use Visual Studio and Windows Communication Foundation directly to build service consumers. [...]