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Subject: NEW ISSUE: Provide some way to prevent early binding to global domainchannels
Title: Provide some way to prevent early binding to global domain channels Target: Assembly 1.2 WD 03 Description: As currently drafted, producers and consumers can indicate global domain channels in their @source & @target attributes. In some scenarios, assemblers will want to prevent the use of said references to global domain channels. For example, an assembler/deployer may wish to deploy their composite in conjunction with an application provided by a 3rd party. Since the third party is unlikely to know the details of the target SCA domain, they cannot safely reference global domain channels. To that end, the assembler/deployer wants to be sure that no such global domain channels are referenced by accident. Currently, there's no specified way for the SCA runtime to enforce such a constraint. Proposal: (Broad strokes:) In section 5.11, add an attribute to the implementation.composite element called @allowGlobalRefs (defaults to true). When this is set to false, any contained use of @source or @target that refers to a global domain channel MUST trigger an error when contributed to the domain.
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