Обсуждение: Jboss and largeObjectManager

I am using Jbos 4.0 and postgresql 7.3 as database. As datasource I have
pooled connection (local-tx-datasource).

As long as I do not work with large object it seems to be fine.

But how do get an instance of the LargeObjectManager.
When I try to do

LargeObjectManager lobj = ((org.postgresql.PGConnection)
dbcon).getLargeObjectAPI();

I get the error java.lang.ClassCastException:
org.jboss.resource.adapter.jdbc.WrappedConnection

I hope someone can help me.

Best regards

Torben Froeberg

On Wednesday 08 June 2005 14:21, torben wrote:
> LargeObjectManager lobj = ((org.postgresql.PGConnection) dbcon).getLargeObjectAPI();
>
> I get the error java.lang.ClassCastException:
> org.jboss.resource.adapter.jdbc.WrappedConnection

I'm not a JBoss programmer, but looking at the JBoss Javadoc at


http://docs.jboss.org/jbossas/javadoc/4.0.2/org/jboss/resource/adapter/jdbc/WrappedConnection.html#getUnderlyingConnection%28%29

it seems to me that what you want to do is

  LargeObjectManager lobj =
     ((org.postgresql.PGConnection) dbcon.getUnderlyingConnection()).getLargeObjectAPI();


(As a side note, this question should've been directed to some JBoss-specific
list.)

Vadim Nasardinov wrote:

>On Wednesday 08 June 2005 14:21, torben wrote:
>
>
>>LargeObjectManager lobj = ((org.postgresql.PGConnection) dbcon).getLargeObjectAPI();
>>
>>I get the error java.lang.ClassCastException:
>>org.jboss.resource.adapter.jdbc.WrappedConnection
>>
>>
>
>I'm not a JBoss programmer, but looking at the JBoss Javadoc at
>

>http://docs.jboss.org/jbossas/javadoc/4.0.2/org/jboss/resource/adapter/jdbc/WrappedConnection.html#getUnderlyingConnection%28%29
>
>it seems to me that what you want to do is
>
>  LargeObjectManager lobj =
>     ((org.postgresql.PGConnection) dbcon.getUnderlyingConnection()).getLargeObjectAPI();
>
>
>
Thank's very much. It was exactly what I needed.

>(As a side note, this question should've been directed to some JBoss-specific
>list.)
>
>
Yes, I can see it now it was the wrong list.