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Posted to oak-issues@jackrabbit.apache.org by "Michael Dürig (JIRA)" <ji...@apache.org> on 2016/06/15 10:32:09 UTC

[jira] [Created] (OAK-4472) Decouple SegmentReader from Revisions

Michael Dürig created OAK-4472:
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             Summary: Decouple SegmentReader from Revisions
                 Key: OAK-4472
                 URL: https://issues.apache.org/jira/browse/OAK-4472
             Project: Jackrabbit Oak
          Issue Type: Improvement
          Components: segment-tar
            Reporter: Michael Dürig
            Assignee: Michael Dürig
             Fix For: 1.6


The {{SegmentReader.readHeadState()}} introduces a de-facto dependency to {{Revisions}} as access to the latter is required for obtaining the record id of the head. 

To decouple SegmentReader from Revisions I propose to replace {{SegmentReader.readHeadState()}} with {{SegmentReader.readHeadState(Revisions revisions)}}. As this results in a lot of boilerplate for callers (i.e. {{fileStore.getReader().getHeadState(fileStore.getRevisions())}}), we should also introduce a convenience method {{FileStore.getHead()}} clients could use to that matter.




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