PDP discussion notes

[Alex Heneveld <alex.heneveld@cloudsoftcorp.com>]

Quick update on the PDP discussion today, two main outcomes:

- deeper scrutiny of (1b) requirements and fulfillment -- people present seemed in agreement it is a good stake in the ground
- discussion of other open PDP issues:  imports (and some overrides); parameters (and referencing, functions)

Thanks Ashok, Derek, and Mark.

No meeting tomorrow.

--A


Soaphub transcript:

Alex Heneveld (Cloudsoft): PDP discussion

Alex Heneveld (Cloudsoft): Agenda:

Alex Heneveld (Cloudsoft): - Alex's Q1

Alex Heneveld (Cloudsoft): - what else do we need to consider -- importing subplans, passing and defining parameters

Alex Heneveld (Cloudsoft): Other issues:

Alex Heneveld (Cloudsoft): - how do you set other properties (of a component's container rather than a component itself)

Alex Heneveld (Cloudsoft): e.g. 2 databases which need labels when their jdbc requirement is specified on a war

Alex Heneveld (Cloudsoft): - parameterisation

Alex Heneveld (Cloudsoft): supplying parameter definitions (constraints) & being able to re-use them

Alex Heneveld (Cloudsoft): & overriding it

Alex Heneveld (Cloudsoft): & overriding a "deep" property (import of an import) ?

Alex Heneveld (Cloudsoft): (nice if it's flat but real systems can have complex requirement trees)

Alex Heneveld (Cloudsoft): (but that's not what we should address right away, not beyond basic composability / substitutability / import)

Alex Heneveld (Cloudsoft): - how we deal with references and things which want functional transformations

Alex Heneveld (Cloudsoft): eg fn::format(...)

Alex Heneveld (Cloudsoft): ugly but less ugly than others

Alex Heneveld (Cloudsoft): is there a dsl-native way to express?  how do you validate it?

Alex Heneveld (Cloudsoft): eclipse xtext - grammar for DSL

Alex Heneveld (Cloudsoft): - fulfillment ?  worth it?  advanced, not needed too often, but gives a lot of power... (Alex)

Alex Heneveld (Cloudsoft): Derek: really nice, because when user knows what they want, they can specify it

Alex Heneveld (Cloudsoft): ACTIONS

Alex Heneveld (Cloudsoft): Alex to update Gil's proposal with latest thinking (components, requirements, fulfillment) and include at least 1 complex example (2 databases?)

END