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From "Martijn Hendriks (JIRA)" <j...@apache.org>
Subject [jira] Commented: (JCR-1456) Database connection pooling
Date Sun, 02 Aug 2009 18:19:14 GMT

    [ https://issues.apache.org/jira/browse/JCR-1456?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12738108#action_12738108

Martijn Hendriks commented on JCR-1456:

Committed in revision 800118. Using a different DB backend for testing can be done as follows:
* Edit the relevant properties in the pom of the jackrabbit-core's use-descriptor-overlay
* Make sure you have the appropriate DB driver on the classpath (a MySQL driver is already
* Run mvn clean integration-test -Puse-descriptor-overlay

Note that the profile drops and recreates the test database in the clean phase.

I recently have been looking at refactoring the database classes a bit to remove duplication
in e.g., all these bean properties (username, password, schema object prefix, etc) and, more
importantly, methods like checkSchema. The idea was to have a base class, say DbSupport, with
all these common properties and methods and and with a method to get a sort of JDBC helper
class which encapsulates the Connection and operations on it (something like the ConnectionRecoveryManager).
I had various subclasses of the JDBC helper in mind for the various DB types (Oracle9, Derby).
This works quite nicely for the core.fs.db package and connection pooling can then be located
inside that JDBC helper class. I was wondering if that could help us here. What if the Operations
that are mentioned above use such as JDBC helper class?

> Database connection pooling
> ---------------------------
>                 Key: JCR-1456
>                 URL: https://issues.apache.org/jira/browse/JCR-1456
>             Project: Jackrabbit Content Repository
>          Issue Type: Improvement
>          Components: jackrabbit-core
>            Reporter: Jukka Zitting
>         Attachments: 777490.patch, dbcp.patch, dbcp.patch, patch-1456-1.txt, patch-1456-2.txt,
> Jackrabbit should use database connection pools instead of a single connection per persistence
manager, cluster journal, or database data store.

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