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| RE: [wtp-dev] Components: Required libraries, projects and classes | 
Chuck,
 
Thanks for the response ... a couple of follow ups 
...
 
As of last weeks IBuild, the move is towards one component 
per project. Is a "reference" component a different thing and hence there will 
be an exception?
And I couldn't get as to what you mean by a reference 
type .... just libraries and jars?  
And similarly a "shared java" component is just another 
reference component which happens to have some java source or is it a special 
kinda component?
 
If you would like one more pair of eyes, I can take a 
look at the reference component if you could point me to a discussion 
thread or other architectural documentation you may have on 
this.
 
Also, I noticed that the Web Services wizards copy the 
jars into <component>/lib instead of the reference model .... but I will 
follow up with Chris on a seperate post.
 
Regards
Ravi 
 
Hi Ravi, All of the requirements you mentioned are currently 
supported or in the M5 plan, although tooling is lacking in many areas. 
My responses are below. - Chuck 
Rational J2EE Tooling Team Lead
IBM Software Lab - Research 
Triangle Park, NC
Email:  cbridgha@xxxxxxxxxx
Phone: 919-254-1848 
(T/L: 444)
  
  
    | "Ravi Kumar" 
      <Ravi.Kumar@xxxxxxxxxxx> Sent by: wtp-dev-bounces@xxxxxxxxxxx
 05/20/2005 11:07 PM 
       
        
        
          | Please respond 
            to"General discussion of project-wide or architectural 
            issues."
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          | To | <wtp-dev@xxxxxxxxxxx> |  
          | cc |  |  
          | Subject | [wtp-dev] Components: 
            Required libraries, projects and classes |  
 
 | 
There appear to be some serious limitations with respect to component 
dependencies on external jars and classes. Here are a few typical use cases and 
the current solutions.       1)  If a component uses a library, the jar 
needs to be copied into the component library directory by the user ... for 
instance component/web-inf/lib. <cdb>We 
don't have the ability yet to create external classpath entries as referenced 
components, but this support is in plan for M5, and is considered very high 
priority</cdb>       2)  If a component uses some classes from a "required 
project", the classes need to be copied in the by the user ... for instance 
component/web-inf/classes <cdb>This 
scenario is supported by creating adding a "referenced" component with the 
"consumes" reference type.  The requirement does exist that the referenced 
project define components around the shared class files</cdb> 
      3) 
 And lastly, flexible projects don't work with source folders which are 
project wide and are shared / used by the components <cdb>Like above, source folders can be defined within a "shared" 
java utility component, that can either reffered by many other components within 
the workspace.</cdb>   My guess is that it will be reasonably straight forward to do 
the following       1)   Allow libraries / jar references to be added to 
components       2)   Allow "required projects" to components 
      3) 
  Allow shared sources in flexible projects and include them in all 
component .deployables ** <cdb>Some 
changes are coming soon for the .deployables folder.  We are pushing all 
assembly tasks minus the essential java compilation to the publish task. 
 This will eliminate server specific behavior at development time, and will 
only assemble the required metadata needed at publish depending on server type. 
 We also intend to assemble these files in the server metadata area outside 
the workspace.</cdb>   The solution I am proposing is whenever one of these 
(libraries, jars or projects) or added to a component, automatically add it to 
the project build path. Adding it to the project build path will use the exact 
same mechanism as when the user set's it from the project properties 
dialog.   So, 
the work involved is       1)   Updating WtpModules model to accommodate the new 
elements       2)   Some 
UI to add these (libraries, jars or projects) to components. Possibly component 
properties similar to project properties <cdb>Thanks for these suggestions, and we understand the need for 
minimal dependency configuration support in R1, we are considering a property 
sheet like you suggest.   Ultimately, a 
feature rich editor for editing resource layout, and deployment options is our 
goal, but for R1.1</cdb>   
thoughts?   
-Ravi   
** Optional, dependency aware filtering would be 
nice as well.          _______________________________________________
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