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Posted to dev@marmotta.apache.org by "Sebastian Schaffert (JIRA)" <ji...@apache.org> on 2013/02/11 21:53:13 UTC
[jira] [Closed] (MARMOTTA-48) KiWi Triplestore: when requesting
value factory through a connection, repository should return a value
factory using the same connection
[ https://issues.apache.org/jira/browse/MARMOTTA-48?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sebastian Schaffert closed MARMOTTA-48.
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> KiWi Triplestore: when requesting value factory through a connection, repository should return a value factory using the same connection
> ----------------------------------------------------------------------------------------------------------------------------------------
>
> Key: MARMOTTA-48
> URL: https://issues.apache.org/jira/browse/MARMOTTA-48
> Project: Marmotta
> Issue Type: Bug
> Reporter: Sebastian Schaffert
> Assignee: Sebastian Schaffert
> Priority: Minor
>
> In the default Sesame SailRepositoryConnection, the getValueFactory() method returns the value factory of the SailRepository. In KiWi this is a bit problematic, because the value factory needs a database connection for loading nodes when needed. When someone uses the getValueFactory() method, this means that there will be two database connections open, which can be a problem for several reasons:
> - transaction isolation (database): nodes created in the one connection are not yet available in the other
> - connection leakage: the value factory connection managed by the KiWiStore will only be closed on shutdown(); if someone forgets a proper shutdown, this can result in connection leakage
> The solution would be to implement a custom version of SailRepository and SailRepositoryConnection which directs the getValueFactory() to the value factory of the SailConnection.
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