On Jul 13, 2007, at 1:30 AM, Mikaël Cluseau wrote:
Caused by: java.lang.ClassCastException:
org.apache.cayenne.access.DataNode$TransactionDataSource cannot be
cast to org.apache.cayenne.project.ProjectDataSource
at org.apache.cayenne.project.DataNodeFile.save(DataNodeFile.java:64)
I don't get how the modeler manages to get it working (it looks pretty
straightforward so I must be missing something).
To work around a bad decision made a long time ago to use Cayenne
runtime objects (DataDomain, DataNode) as CayenneModeler model beans,
modeler often uses inner subclasses to suppress various runtime
behavior aspects. Here is how i handles the problem above:
class ModelerProjectLoadDelegate extends RuntimeLoadDelegate {
....
protected DataNode createDataNode(String nodeName) {
return new DataNode(nodeName) {
public DataSource getDataSource() {
return dataSource;
}
};
}
...
}
Andrus
