[OASIS Issue Tracker] Commented: (CAMP-44) Clarify resource type issues and API

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    [ http://tools.oasis-open.org/issues/browse/CAMP-44?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=35946#action_35946 ] 

Anish Karmarkar commented on CAMP-44:
-------------------------------------

proposal (directional):
1) CAMP resource types can inherit from other resource types (plural)
2) Create a base resource type called Resource that contains the common attributes. All CAMP resource types inherit from Resource
3) A resource of a particular subtype is substitutable for a resource of its supertype.
i.e., if resource R1 has a type T1, and T1 inherits from type T2, then R1 may appear any place where a resource of type T2 is expected.
4) If a resource type inherits from two types T1 and T2 and both T1 and T2 have an attribute A, then the metadata for both T1.A and T2.A SHALL point to the same attribute definition.

> Clarify resource  type issues and API
> -------------------------------------
>
>                 Key: CAMP-44
>                 URL: http://tools.oasis-open.org/issues/browse/CAMP-44
>             Project: OASIS Cloud Application Management for Platforms (CAMP) TC
>          Issue Type: Task
>          Components: Spec
>            Reporter: Alex Heneveld
>            Priority: Minor
>
> There were several key questions about types that have come up in today's F2F:
> What type hierarchy will we use?  Mark requests ability to define e.g. MyGreatDatabase which extends Database.  (We could also have multiple inheritance / interface / etc.)
> How do we explore the type hierarchy?  (The apidoc suggestion in CAMP-1 could come in here.)
> And do we permit dynamic attribute extensions -- e.g. a resource instance has values for other attributes not on its type?  (Yes please!)

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