[jira] [Created] (ISIS-1370) Simplify PublishingService, deprecate concept of payload factories.

["Dan Haywood (JIRA)" <ji...@apache.org>]

Dan Haywood created ISIS-1370:
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             Summary: Simplify PublishingService, deprecate concept of payload factories.
                 Key: ISIS-1370
                 URL: https://issues.apache.org/jira/browse/ISIS-1370
             Project: Isis
          Issue Type: Improvement
          Components: Core
    Affects Versions: 1.12.0
            Reporter: Dan Haywood
            Assignee: Dan Haywood
            Priority: Minor
             Fix For: 1.13.0


Most PublishingService implementations (to date) only require the metadata (action invocation or domain object identity) to publish their events; the notion of the payload (to eagerly assemble information for the downstream subscribers) seems less useful.

This ticket is therefore to deprecate the PublishingService#publish(EventMetadata, EventPayload), and replace with PublishingService2#publish(EventMetadata).

In addition, the framework will be changed so that for the existing API taking a payload, this will now just be passed in as null.

This also means that @DomainObject#publishingPayloadFactory() and @Action#publishingPayloadFactory() attributes are deprecated (will have no effect).



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