Class cast exception on
------------------------
Key: TUSCANY-475
URL: http://issues.apache.org/jira/browse/TUSCANY-475
Project: Tuscany
Type: Bug
Components: Java DAS RDB
Versions: Java-M1
Environment: Windows XP
Reporter: Simon Laws
I'm trying to retrieve rows from a database via the relational DAS. When I run
my test prgram I get
Exception in thread "main" java.lang.ClassCastException:
org.eclipse.emf.ecore.util.EcoreEList$Dynamic incompatible with
commonj.sdo.DataObject
at
org.apache.tuscany.sdo.impl.DataObjectImpl.getDataObject(DataObjectImpl.java:322)
at
org.apache.tuscany.sdo.interop.SDOInterop.testReadAndWriteRelationalDB2(SDOInterop.java)
at org.apache.tuscany.sdo.interop.SDOInterop.main(SDOInterop.java:136)
The code looks like.
CommandGroup commandGroup =
CommandGroup.FACTORY.createCommandGroup(getClass().getResourceAsStream("interopconfig-db2.xml"));
Command read = commandGroup.getCommand("all type");
DataObject root = read.executeQuery();
DataObject firstRow = root.getDataObject("alltype[0]");
Now I expect to get a "firstRow" DataObject back. Indeed
DataObjectImpl.getDataObject() casts the return to a DataObject
public DataObject getDataObject(String path)
{
return (DataObject)get(path);
}
However the the DataObjectUtil.get() operation creates an Accessor and calls
getAndRecycle
public static Object get(DataObject dataObject, String path)
{
Property property = dataObject.getType().getProperty(path);
if (property != null) {
return dataObject.get(property);
} else {
return Accessor.create((EObject)dataObject, path).getAndRecyle();
}
}
getAndRecycle call get which, because I have specified a 0 index, just returns
the value which happens to be of type EcoreEList$Dynamic
So while I may have an error in my code somewhere or it might not be retrieving
any data from the database a class cast exception inside of SDO doesn't seem
like the correct way to tell me.
--
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators:
http://issues.apache.org/jira/secure/Administrators.jspa
-
For more information on JIRA, see:
http://www.atlassian.com/software/jira
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
