[overlord-issues] [JBoss JIRA] (BAM-26) Investigate deserialising custom activity types

[Gary Brown (JIRA)]

     [ https://issues.jboss.org/browse/BAM-26?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gary Brown updated BAM-26:
--------------------------

    Fix Version/s: 1.0.0.M4
                       (was: 1.0.0.M5)

    
> Investigate deserialising custom activity types
> -----------------------------------------------
>
>                 Key: BAM-26
>                 URL: https://issues.jboss.org/browse/BAM-26
>             Project: Business Activity Monitoring
>          Issue Type: Task
>            Reporter: Gary Brown
>            Assignee: Gary Brown
>             Fix For: 1.0.0.M4
>
>
> Currently the JSON deserialization uses a type field to determine the ActivityType.
> However this is only possible because the types have been registered against the ActivityType class using the Jackson JsonSubTypes annotation.
> The benefit of the type field approach is that it is language independent (whereas @class is Java specific) and the amount of information in the json encoding is smaller (i.e. no package name).
> However this approach means it is not easy for users to add new ActivityType derived classes, as the class would need to be added to the JsonSubTypes derived in the annotations for ActivityType class.
> Another approach would be to have own type registry that custom activity type classes could also be registered with.
> Need to investigate the possibilities and how the user's custom classes would be added to the AS7 installation easily. May need to update the org.overlord.bam module?

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