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https://issues.apache.org/jira/browse/ARIES-969?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mark Nuttall resolved ARIES-969.
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Resolution: Fixed
> Empty Bundle-Blueprint: header should result in no blueprint container
> ----------------------------------------------------------------------
>
> Key: ARIES-969
> URL: https://issues.apache.org/jira/browse/ARIES-969
> Project: Aries
> Issue Type: Bug
> Components: Application
> Affects Versions: 0.4
> Reporter: Mark Nuttall
> Assignee: Mark Nuttall
> Fix For: 0.4
>
> Original Estimate: 2h
> Remaining Estimate: 2h
>
> At the end of the OSGi R5 Enterprise spec section 121.3.4 we read,
> "If the Bundle-Blueprint header is specified but empty, then the Blueprint
> bundle must not be managed. This can be used to temporarily disable a
> Blueprint bundle."
> This behaviour is not currently implemented. As well as not being
> spec-compliant, it can be time consuming to scan large bundles for blueprint
> files. I'll firstly use this defect to change the behaviour so as to become
> spec-compliant.
> One problem with the spec as written is that bundles that do not contain
> blueprint must "opt out" of blueprint management by including an empty
> Bundle-Blueprint header. This is a problem for users that consume third party
> bundles that are unwilling or unable to modify their manifests. So I'm going
> to add a system property, "org.apache.aries.blueprint.header.mandatory". Its
> default value will be "false". Setting it to 'true' will mean that bundles
> that do not contain a Bundle-Blueprint: header in their manifests will not be
> scanned for blueprint and will not get runtime blueprint containers.
> ModelledResourceManagerImpl.findBlueprints() is expensive for large bundles,
> so this will yield substantial performance improvements for such users.
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