[Xapian-tickets] [Xapian] #739: Expose a lazy Xapian::Document() attached to a database

[Xapian]

#739: Expose a lazy Xapian::Document() attached to a database
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        Reporter:  Kronuz       |      Owner:  olly
            Type:  enhancement  |     Status:  new
        Priority:  normal       |  Milestone:  1.4.2
       Component:  Other        |    Version:
        Severity:  normal       |   Keywords:
      Blocked By:               |   Blocking:
Operating System:  All          |
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 This can be accomplished either exposing a "lazy" flag in
 `Database::get_document(Xapian::docid)`, such as passing flags or a
 boolean to it, or by exposing a `Xapian::Document` constructor which takes
 the database(s) as well as the `docid`.

 The need for this lazy document initializer is that in Xapiand we create
 `Xapian::Document` objects on the fly, many times with different
 underlying database objects coming from a pool of databases; we need an
 efficient/fast way of telling `Xapian::Document` from what database to get
 the required document, without it having to hit the database on each
 `get_document()` call.

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Ticket URL: <https://trac.xapian.org/ticket/739>
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