Hi,
I'm looking into the policy framework code. I found it very strange that we
have some code in the ContributionServiceImpl to modify the composite file
and attach tuscany attributes to the XML document to keep the applicable
policy sets for a given PolicySetAttachPoint. The later is calculated by
applying the PolicySet.getAppliesTo() XPath. The following shows the altered
XML:
<component name="MyComponent" tuscany:applicablePolicySets="..."
tuscany:policySets="..." ...>
</component>
IMO, the ContributionService should be independent of any artifact types.
Why do we need to transform the SCA composite file for the policy validation
purpose in the contribution service?
I understand it's a bit difficult to apply XPath for StAX streams. Can we do
the following instead?
1) Use the StAXArtifactProcessor.write() method to produce a DOM
representation of the PolicySetAttachPoint so that we can apply the XPath
given by PolicySet.getAppliesTo().
2) Remove the getApplicablePolicySets() in the PolicySetAttachPoint model.
The validation should be handled when we configure/build the composite.
There is no need to pre-calculate the applicable policy sets.
Thanks,
Raymond
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