Network Model writeNetwork

Question

Whilst using the sdonm API I have been calculating the shortest path between two nodes. This all works very well. However when I come to write this path to the path and path_link tables the NetworkManager.writeNetwork method does nothing. More precisely I do:
Network nw=NetworkManager.readNetwork(connection,name,true);
Path shortPath=NetworkManager.shortestPath(nw,node1,node2);
shortPath.computeGeometry(0.05);
nw.addPath(shortPath);
NetworkManager.writeNetwork(connection,name);
connection.commit;
From reading around the forums I am unsure as to whether the above should work, as a workaround I am inserting the data into the table manually but it is less elegant and a lot more hassle than the above.
Help?

Answer 1

Hi,
I can write the path data out to the path table by using the JNDI datasource and a preparedstatement, so I don't think there is a config issue. I had a read on the internet for some hours today and from what I understand sometimes Oracle doesn't like being written to by anything other than the Oracle driver? What I mean is that the connection given by using the drivermanager method is of a different type to the JNDI method. I did read that if I used an OracleDataSource rather than a javax.sql.DataSource then this might make it work, however I have been unable to cast the JNDI connection to an OracleDataSource. i.e.
<pre>
Context ctx = new InitialContext();
OracleDataSource ds = (OracleDataSource)ctx.lookup(JNDIName);
</pre>
However this gives me a classcastexception. This seemed a little strange as in the oc4j admin pages the JNDIName is actually formed from the oracle.jdc.pool.OracleDataSource. Does this sound reasonable?