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Posted to oak-issues@jackrabbit.apache.org by "Chetan Mehrotra (JIRA)" <ji...@apache.org> on 2014/03/19 05:40:42 UTC

[jira] [Created] (OAK-1567) Return Iterator instead of returning List in DocumentStore.query

Chetan Mehrotra created OAK-1567:
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             Summary: Return Iterator instead of returning List in DocumentStore.query
                 Key: OAK-1567
                 URL: https://issues.apache.org/jira/browse/OAK-1567
             Project: Jackrabbit Oak
          Issue Type: Improvement
          Components: mongomk
    Affects Versions: 0.18
            Reporter: Chetan Mehrotra
            Assignee: Chetan Mehrotra
             Fix For: 0.20


Currently the DocumentStore query method returns List after performing any query against backend. In case of Mongo the DBCursor returned [1] implements Iterable interface. And in all usage so far the code can work perfectly fine with Iterable

It would be better if we change the api contract to return iterator and allow lazy traversal of the NodeDocuments. Further the pagination/batching would be handled within the Driver itself and the code above would not have to construct there on batching.

See [2] for details

[1] http://api.mongodb.org/java/2.0/com/mongodb/DBCursor.html
[2] http://markmail.org/thread/ilcqtvaziie3ycb5



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