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> On 20 Jun 2016, at 11:00, basex-talk-request at mailman.uni-konstanz.de wrote: > > Send BaseX-Talk mailing list submissions to > basex-talk at mailman.uni-konstanz.de > > To subscribe or unsubscribe via the World Wide Web, visit > https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk > or, via email, send a message with subject or body 'help' to > basex-talk-request at mailman.uni-konstanz.de > > You can reach the person managing the list at > basex-talk-owner at mailman.uni-konstanz.de > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of BaseX-Talk digest..." > > > Today's Topics: > > 1. Re: client:connect reference to DB or storage in RAM (loss in > performance?) (Kapoor, Sumit) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 20 Jun 2016 09:53:15 +0000 > From: "Kapoor, Sumit" <Sumit.Kapoor at adesso.de> > To: Christian Gr?n <christian.gruen at gmail.com> > Cc: "basex-talk at mailman.uni-konstanz.de" > <basex-talk at mailman.uni-konstanz.de> > Subject: Re: [basex-talk] client:connect reference to DB or storage in > RAM (loss in performance?) > Message-ID: > <3a53b43667b544b789776972a6d34e05 at EX2013-DB01.adesso.local> > Content-Type: text/plain; charset="utf-8" > > I mean if we try to access the DB without "client:connect" e.g. : > > if (collection("BIG-DB")/*:node[*:id=3/*:status = 'true') > then _:todoFunc("") > else () > > That would be an access to the DB without "client:connect" if I code it like that more than once I always get the error: "The Database is already in use". Because they block each other. For example if I add this to it: > > let $anotherquery := collection("BIG-DB")/*:node > > > Regards, > Sumit > > -----Urspr?ngliche Nachricht----- > Von: Christian Gr?n [mailto:christian.gruen at gmail.com] > Gesendet: Samstag, 18. Juni 2016 14:40 > An: Kapoor, Sumit <Sumit.Kapoor at adesso.de> > Cc: basex-talk at mailman.uni-konstanz.de > Betreff: Re: [basex-talk] client:connect reference to DB or storage in RAM (loss in performance?) > >> If I open a connection, send a query and close the connection: What do >> I get? Just a Copy of the Database which will be stored in the >> core/main memory or a reference to the DB? Here a Code Example: > > You will always get a copy of the database node. As you may have seen in the documentation of the Client Module, you should never use it to address the same BaseX instance, as this can cause deadlocks. > >> We have to use such a workaround with ?client:connect? because if we >> try to access directly the DB more than once it will be blocked. > > Do you have more details? > Christian > > ------------------------------------------------------- >>>> business. people. technology. <<< > ------------------------------------------------------- > > adesso AG mit Sitz in Dortmund > Vorstand: Michael Kenfenheuer (Vors.), Christoph Junge, Andreas Prenneis > Vorsitzender des Aufsichtsrates: Prof. Dr. Volker Gruhn > Amtsgericht Dortmund HRB 20663 > > End of BaseX-Talk Digest, Vol 78, Issue 32 > ******************************************