| [CDO/Hibernate] How to access hsqldb database? [message #823195] |
Sat, 17 March 2012 23:33  |
 Daniel Bali
Messages: 15
Registered: February 2012 |
Junior Member |
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Hello!
I followed the CDO/Hibernate Store tutorial, and downloaded 3 example projects from the repository.
(org.eclipse.emf.cdo.examples.company,
org.eclipse.emf.cdo.examples.hibernate.client,
org.eclipse.emf.cdo.examples.hibernate.server)
How can I find the url where the hsqldb database is stored?
In the cdo-server.xml there is a line:
<property name="hibernate.connection.url" value="jdbc:hsqldb:mem:cdohibernate"/>
But if I try to connect to the database with the following code, and read the table names using DatabaseMetaData, I only get the system tables, and no evidence that anything was written to the database.
Class.forName("org.hsqldb.jdbcDriver");
Connection conn = DriverManager.getConnection("jdbc:hsqldb:mem:cdohibernate", "sa", "");
DatabaseMetaData meta = conn.getMetaData();
ResultSet res = meta.getTables(null, null, null, null);
// read data from result set
Am I connecting to the wrong url?
If so, what is the correct url?
Thanks in advance!
Daniel
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| Re: [CDO/Hibernate] How to access hsqldb database? [message #823502 is a reply to message #823195] |
Sun, 18 March 2012 11:59  |
Martin Taal
Messages: 5468
Registered: July 2009 |
Senior Member |
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Hi Daniel,
I don't know hsqldb that well myself, the database is an in-memory database (as the url indicates), so I guess you have
to connect while being in the same jvm instance at runtime as the cdo server. If you connect in a separate jvm then you
will probably only see the system tables.
gr. Martin
On 03/18/2012 12:33 AM, Daniel Bali wrote:
> Hello!
>
> I followed the CDO/Hibernate Store tutorial, and downloaded 3 example projects from the repository.
> (org.eclipse.emf.cdo.examples.company,
> org.eclipse.emf.cdo.examples.hibernate.client,
> org.eclipse.emf.cdo.examples.hibernate.server)
>
> How can I find the url where the hsqldb database is stored?
> In the cdo-server.xml there is a line:
> <property name="hibernate.connection.url" value="jdbc:hsqldb:mem:cdohibernate"/>
>
> But if I try to connect to the database with the following code, and read the table names using DatabaseMetaData, I only
> get the system tables, and no evidence that anything was written to the database.
>
>
> Class.forName("org.hsqldb.jdbcDriver");
> Connection conn = DriverManager.getConnection("jdbc:hsqldb:mem:cdohibernate", "sa", "");
> DatabaseMetaData meta = conn.getMetaData();
> ResultSet res = meta.getTables(null, null, null, null);
> // read data from result set
>
>
> Am I connecting to the wrong url?
> If so, what is the correct url?
>
> Thanks in advance!
> Daniel
--
With Regards, Martin Taal
Springsite/Elver.org
Office: Hardwareweg 4, 3821 BV Amersfoort
Postal: Nassaulaan 7, 3941 EC Doorn
The Netherlands
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Tel: +31 (0)84 420 2397
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Mail: mtaal@xxxxxxxx - mtaal@xxxxxxxx
Web: www.springsite.com - www.elver.org
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| Re: [CDO/Hibernate] How to access hsqldb database? [message #823503 is a reply to message #823195] |
Sun, 18 March 2012 12:03 |
Daniel Bali
Messages: 15
Registered: February 2012 |
Junior Member |
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My problem is partially solved now!
I was able to reach the database using the following url:
jdbc:hsqldb:file://D:/test
What I still don't understand is why didn't this work with the original url in the cdo-server.xml
Edit:
Thank you Martin! I just saw your reply after posting. I'm not sure I can connect from the same jvm since the original runs the server. Anyway, I can still work with the "file" solution for now.
Thanks!
[Updated on: Sun, 18 March 2012 12:04] Report message to a moderator |
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