The RDB DAS creates the graph and corresponding Types dynamically from
the database query results.
Frank Budinsky wrote:
The problem seems to be that the metadata for class DataGraphRoot is not
registered on the client. Is that the only missing metadata? What about
the metadata for the rest of the model. I can't provide any more help
without more details about how the metadata is being defined.
Frank.
"Kevin Williams" <[EMAIL PROTECTED]> wrote on 08/25/2006 03:30:15 PM:
It may be that your remote client has not initialized the SDO/EMF
environment properly and I think that we need some help from the SDO
team. I have copied this to the dev list since not everyone has
registered yet for the user list.
--Kevin
Luciano Resende wrote:
Hi Scott
So, here is a quick example from our unit testings :
/**
* Read a specific customer
*/
public void testReadSingle() throws Exception {
//Create and initialize command to read customers
DAS das = DAS.FACTORY.createDAS(getConnection());
Command readCustomers = das.createCommand("select * from
CUSTOMER where ID = 1");
//Read
DataObject root = readCustomers.executeQuery();
//Verify
assertEquals(1, root.getInt("CUSTOMER[1]/ID"));
}
If you get a reference to root first, then try to access the customer
information, do you still have this problem ?
Maybe something like this :
DataObject root = readCust.executeQuery();
cust = root.getDataObject("CUSTOMER")
Please let me know if this helps...
- Luciano
On 8/24/06, *Scott Kurinskas* <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
Hi,
Now that my DAS example is up and running, I'm trying to move my
example to
a client/server environment and integrate it with my product. My
use-case
is very simple, a client makes a request to the server, the server
fetches
the result from the database and returns the DataObject back to
the client.
The server side code looks like the following:
das = DAS.FACTORY.createDAS(getConfig("CompanyConfig.xml"),
connection);
String sql = "Select * from customers where
customers.customerNumber = " +
key;
Command readCust = das.createCommand(sql);
DataObject cust = readCust.executeQuery();
return cust;
The code executes fine on the client but for some reason the
client is
throwing the exception below. The client should be deserializing
the
response into a DataObject, but for some reason its complaining
about class
DataGraphRoot not found. The same code executing in a app works
great.
Thoughts?
Thanks again,
Scott
Caught unexpected Exception
org.eclipse.emf.ecore.resource.Resource$IOWrappedException: Class
'DataGraphRoot' not found.
( file:///C:/Documents%20and%20Settings/skurinsk/workspace/SDO%20
<file:///C:/Documents%20and%20Settings/skurinsk/workspace/SDO%
20&%20Cache%20
<file:///C:/Documents%20and%20Settings/skurinsk/workspace/SDO%
20&%20Cache%20>
Client/all.datagraph> &%20Cache%20Client/all.datagraph, 5, 22)
at
org.eclipse.emf.ecore.xmi.impl.XMLLoadImpl.
handleErrors(XMLLoadImpl.java:80)
at
org.eclipse.emf.ecore.xmi.impl.XMLLoadImpl.load(XMLLoadImpl.java
:189)
at
org.apache.tuscany.sdo.util.
DataGraphResourceFactoryImpl$DataGraphResourceIm
pl$LoadImpl.load(DataGraphResourceFactoryImpl.java:452)
at
org.eclipse.emf.ecore.xmi.impl.XMLResourceImpl.
doLoad(XMLResourceImpl.java
:1
79)
at
org.eclipse.emf.ecore.resource.impl.ResourceImpl.
load(ResourceImpl.java:1089
)
at
org.apache.tuscany.sdo.impl.
DataGraphImpl$EDataGraphExternalizable.readExter
nal(DataGraphImpl.java:665)
at
java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1758)
at
java.io.ObjectInputStream.
readOrdinaryObject(ObjectInputStream.java:1716)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java
:1304)
at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:349)
at
org.apache.tuscany.sdo.helper.
HelperProviderImpl$ResolvableImpl.readDataObje
ct(HelperProviderImpl.java:205)
at
org.apache.tuscany.sdo.helper.
HelperProviderImpl$ResolvableImpl.readExternal
(HelperProviderImpl.java:144)
at
commonj.sdo.impl.ExternalizableDelegator.
readExternal(ExternalizableDelegato
r.java:80)
at
java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1758)
at
java.io.ObjectInputStream.
readOrdinaryObject(ObjectInputStream.java:1716)
at
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1304)
at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:349)
at
com.gemstone.gemfire.DataSerializer.readObject(DataSerializer.java:3200)
at
com.gemstone.gemfire.internal.util.BlobHelper.
deserializeBlob(BlobHelper.jav
a:55
--
-----------------------------------------------------
Luciano Resende
SOA Opensource - Apache Tuscany
-----------------------------------------------------
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
