Re: [dotNetRDF-Support] Is there a way to configure a Sparql endpoint using the in-memory with persistence?

[Rob V. <rv...@do...>]

Hi Mark

The PersistentTripleStore class is a wrapper around  a native triple store
implementation provided by a IStorageProvider so despite being loadable from
the Configuration API is not appropriate to your scenario.

Currently there is no persistence for in-memory stores by design.  This may
get added sometime in the future (patches/pull requests welcome) but this is
not currently on our roadmap.  People who want persistence typically use one
of the various third party triple stores we provide integration for.

However there is a FileGraphPersistenceWrapper which can persist an
in-memory graph to a file when changes are made but I don't believe the way
it is wired up now will cause the changes from an update to get Flushed and
thus written to disk.  Also FileGraphPersistenceWrapper is not currently
loadable from the Configuration API, if you have time to investigate and
experiment with this patches/pull requests would be welcomed.

Rob

From:  Mark Skiba <Ma...@Sk...>
Reply-To:  dotNetRDF User Help and Support
<dot...@li...>
Date:  Monday, December 17, 2012 2:37 PM
To:  <dot...@li...>
Subject:  [dotNetRDF-Support] Is there a way to configure a Sparql endpoint
using the in-memory with persistence?

> I've got your dotNetRDF Sparql/Update endpoints setup and working in IIS but
> there is no persistence of the updates back to the source .ttl file.  I see
> that there is a PersistentTripleStore class and tried configuring it in the
> config.ttl but got a "cannot load object" error when experimenting with the
> Sparql web interfaces.  I suspect that using SQL would resolve this but prefer
> the in memory approach for our needs now?
> 
> Is there currently a way to configure a Sparql endpoints using in memory store
> with persistence?
> If not,would adding PersistentTripleStore to the ConfigurationLoader class be
> the way to add this type  of support?
> 
> Thanks,
> 
> Mark Skiba
> 
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