[dna-issues] [JBoss JIRA] Commented: (DNA-404) Remove ObservationService, migrate usage to observe RepositoryLibrary

[Randall Hauch (JIRA)]

    [ https://jira.jboss.org/jira/browse/DNA-404?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12468761#action_12468761 ] 

Randall Hauch commented on DNA-404:
-----------------------------------

Changed the SequencingService to use the new observation framework (by adding an observer to the RepositoryLibrary).  This required an observer that computed the net change for a set of change requests, so the NetChangeObserver was added to the observation framework as an abstract subclass of ChangeObserver.  Changed the test cases accordingly, eliminating any test that was only testing the old ObservationService behavior.

The old ObservationService framework will be removed in the next commit.

> Remove ObservationService, migrate usage to observe RepositoryLibrary
> ---------------------------------------------------------------------
>
>                 Key: DNA-404
>                 URL: https://jira.jboss.org/jira/browse/DNA-404
>             Project: DNA
>          Issue Type: Task
>          Components: Connectors, Graph, Sequencers
>    Affects Versions: 0.4
>            Reporter: Randall Hauch
>            Assignee: Randall Hauch
>            Priority: Blocker
>             Fix For: 0.5
>
>
> The ObservationService is no longer needed since DNA-252 has added an observation framework to the graph API and RepositoryLibrary now manages the list of registered observers.  All components that use the Observation Service should be changed to use Observers registered via the RepositoryLibrary.
> This will likely require changes to the Getting Started examples and documentation.

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