[Xapian-tickets] [Xapian] #548: reopen should return flag indicating whether database has changed

[Xapian]

#548: reopen should return flag indicating whether database has changed
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 Reporter:  richard      |       Owner:  richard  
     Type:  enhancement  |      Status:  new      
 Priority:  normal       |   Milestone:  1.3.0    
Component:  Library API  |     Version:  SVN trunk
 Severity:  normal       |   Blockedby:           
 Platform:  All          |    Blocking:           
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 It would sometimes be very useful to know whether a call to reopen() has
 resulted in a new version being opened or not.  This would allow things
 like schemas stored in database metadata to be refreshed only if the
 database has been modified.  It seems natural enough to return this
 information as a boolean flag from Database::reopen().

 The information needed to provide this return value seems easily available
 in chert, but may not be for all current or future backends.

 The semantics would probably therefore need to be that a return value of
 "false" means that the database has definitely not reopened, but "true"
 means that the database might have been reopend.  Any database can then
 return "true" always, and be "correct".

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Ticket URL: <http://trac.xapian.org/ticket/548>
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