[OASIS Issue Tracker] Created: (TOSCA-111) Adding a dependsOn relation should not require changes to the type definition of the target

Adding a dependsOn relation should not require changes to the type definition of the target
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                 Key: TOSCA-111
                 URL: http://tools.oasis-open.org/issues/browse/TOSCA-111
             Project: OASIS Topology and Orchestration Specification for Cloud Applications (TOSCA) TC
          Issue Type: Bug
          Components: Interop
    Affects Versions: CSD2
            Reporter: Derek Palma
             Fix For: CSD2


Current examples show the dependsOn RelationionshipType defined with a RequirementType on the source end and and CapabilityType on the remote end. This syntax forces someone wanting to use a dependsOn relation in a Service Template to have to a add a capability to the target NodeType  if it does not yet have one, resulting in a change in the target's NodeType definition. In addition to being convenient and unnecessary, the "owner" of the target type may not expect users to be changing his/her type when they use it in Service Templates. From a type evolution perspective, this causes a change in the target NodeType, making it a different version than it original definition, which is not the intention (the user is not trying to change any of the semantics of the target NodeType).




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