Now I understood the problem. It is happening in scenario like if we load two
XSDs from different classes with same URI but different types in them,
XSDHelper is keeping only types from first XSD. Here, two different classes
mean their class loaders are different. If we load same two XSDs from single
class then there is no issue. is this the expected behavior?
Regards
Raman
_____________________________________________
From: Malisetti, Ramanjaneyulu
Sent: Wednesday, 25 November 2009 5:39 PM
To: 'tuscany-u...@ws.apache.org'
Subject: RE: SDO UnmarshalException
Hi Kelvin,
<< File: SDO-Marshall-Exception.zip >>
After so many trails I found the problem. The issue is where we are loading
Schemas and XML files with XMLHelpter.INSTANCE object. For example, if we write
one facade class to encapsulate all calls to SDO Api, it is leading to issues
like, "Feature not Found" while loading XML resource after loading XSDs or
ClassCastException: The feature 'xxxx's type 'DataObject' does not permit a
value of type 'xxx'. This is kind of issues can be avoided if we call
XMLHelpter.INSTANCE.define/load in our implementation.
Here I attached sample source which is slightly complex example. I have taken
this scenario to replicate marshall error. However, I got symptoms of the issue
before I reach to RMI. So, you can see the issue from very begining of the
running Test from sdo.rmi.sample.hello RemoteDescriptor. To illustrate the
issue w.r.t attached sample...
- sdo.rmi.sampl.impl.util.BeanXmlHelper.java is a façade class which
encapsulate SDO APIs
- I load XSDs and XML with help of BeanXmlHelper in
sdo.rmi.sample.hello.HelloDescriptor and sdo.rmi.sampl.impl.XMLDescriptor
- I use HelloDescriptor in HelloConnector.
What is the right way of loading XSDs and XMLs so that I can have dynamic types
in my code and can use them without in issues across different classloaders?
I don't have much exp in using SDO APIs, please bear me if these questions are
very basic. I appreciate your help.
Thanks in advance..
Regards
Raman
_____________________________________________
From: Malisetti, Ramanjaneyulu
Sent: Monday, 23 November 2009 4:29 PM
To: 'tuscany-u...@ws.apache.org'
Subject: RE: SDO UnmarshalException
Thanks Kelvin for quick response. I am trying to reproduce with sample program
so that I can share that with you. Apparently, no luck. It means there is
something we are doing differently. I have been trying to identify that..
I'll post progress.
Regards
Raman
to be sure about this, I'd need to be able to recreate the problem
with a bit of test code, and I've not played with SDO using RMI calls,
but the SDO metadata associated with the namespace URI must be
available when the XML document is parsed. This would be made
available when either the XSDHelper is used to load a schema or
generated SDO classes are registered with the environment, and it is
going to need to be available in the jvm that the xml parsing is
happening.
Kelvin.
_____________________________________________
From: Malisetti, Ramanjaneyulu
Sent: Friday, 20 November 2009 5:21 PM
To: 'tuscany-u...@ws.apache.org'
Subject: SDO UnmarshalException
Hi,
We have a class called Descriptor that loads XML and XSD files to
build SDO objects, this we are doing in its constructor. We have another class
called Container that contains Descriptor class. If we make Container class
object as Remotable (Exported as RMI object) and call a method on remotable
object on RMI client side to get descriptor, it is throwing the following
exception . The below "not found URI" is there in XML file. We are not getting
what is the problem. Could you helps us here what is going wrong? BTW, we
ensured all required interfaces as Remote so that there is nothing wrong on
RMI side.
java.rmi.UnmarshalException: error unmarshalling return; nested exception is:
org.eclipse.emf.ecore.resource.Resource$IOWrappedException: Package
with uri 'http://www.abc.com/connex' not found. (http:///temp.xml, 3, 106)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:173)
at
java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(RemoteObjectInvocationHandler.java:178)
at
java.rmi.server.RemoteObjectInvocationHandler.invoke(RemoteObjectInvocationHandler.java:132)
at $Proxy8.getDescriptor(Unknown Source)
at
com.abc.connector.impl.infrastructure.rmi.RemoteRMIConnectorProxy.getDescriptor(RemoteRMIConnectorProxy.java:66)
at
com.abc.connector.impl.infrastructure.rmi.test.TestRMIConnector.setUpBeforeClass(TestRMIConnector.java:79)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.junit.internal.runners.BeforeAndAfterRunner.invokeMethod(BeforeAndAfterRunner.java:74)
at
org.junit.internal.runners.BeforeAndAfterRunner.runBefores(BeforeAndAfterRunner.java:50)
at
org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:33)
at
org.junit.internal.runners.TestClassRunner.run(TestClassRunner.java:52)
at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:45)
at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
Caused by: org.eclipse.emf.ecore.resource.Resource$IOWrappedException: Package
with uri 'http://www.abc.com/connex' not found. (http:///temp.xml, 3, 106)
at
org.eclipse.emf.ecore.xmi.impl.XMLLoadImpl.handleErrors(XMLLoadImpl.java:83)
at org.eclipse.emf.ecore.xmi.impl.XMLLoadImpl.load(XMLLoadImpl.java:278)
at
org.eclipse.emf.ecore.xmi.impl.XMLResourceImpl.doLoad(XMLResourceImpl.java:666)
at
org.apache.tuscany.sdo.util.resource.SDOXMLResourceImpl.doLoad(SDOXMLResourceImpl.java:589)
at
org.eclipse.emf.ecore.xmi.impl.XMLResourceImpl.load(XMLResourceImpl.java:634)
at
org.apache.tuscany.sdo.helper.XMLDocumentImpl.load(XMLDocumentImpl.java:266)
at
org.apache.tuscany.sdo.helper.XMLDocumentImpl.load(XMLDocumentImpl.java:239)
at
org.apache.tuscany.sdo.helper.XMLHelperImpl.load(XMLHelperImpl.java:97)
at
org.apache.tuscany.sdo.helper.XMLHelperImpl.load(XMLHelperImpl.java:79)
at
org.apache.tuscany.sdo.spi.HelperProviderBase$ResolvableImpl.readDataObject(HelperProviderBase.java:229)
at
org.apache.tuscany.sdo.spi.HelperProviderBase$ResolvableImpl.readExternal(HelperProviderBase.java:161)
at
commonj.sdo.impl.ExternalizableDelegator.readExternal(ExternalizableDelegator.java:83)
at
java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1792)
at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1751)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
at
org.apache.tuscany.sdo.spi.HelperProviderBase$ResolvableImpl.readDataObject(HelperProviderBase.java:238)
at
org.apache.tuscany.sdo.spi.HelperProviderBase$ResolvableImpl.readExternal(HelperProviderBase.java:161)
at
commonj.sdo.impl.ExternalizableDelegator.readExternal(ExternalizableDelegator.java:83)
at
java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1792)
at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1751)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at
java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871)
at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at
java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871)
at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
at sun.rmi.server.UnicastRef.unmarshalValue(UnicastRef.java:306)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:155)
... 19 more
Caused by: org.eclipse.emf.ecore.xmi.PackageNotFoundException: Package with uri
'http://www.abc.com/connex' not found. (http:///temp.xml, 3, 106)
at
org.eclipse.emf.ecore.xmi.impl.XMLHandler.getPackageForURI(XMLHandler.java:2350)
at
org.eclipse.emf.ecore.xmi.impl.XMLHandler.getFactoryForPrefix(XMLHandler.java:2188)
at
org.eclipse.emf.ecore.xmi.impl.XMLHandler.createObjectFromTypeName(XMLHandler.java:1828)
at
org.eclipse.emf.ecore.xmi.impl.XMLHandler.createObject(XMLHandler.java:1787)
at
org.eclipse.emf.ecore.xmi.impl.XMLHandler.handleFeature(XMLHandler.java:1569)
at
org.eclipse.emf.ecore.xmi.impl.XMLHandler.createDocumentRoot(XMLHandler.java:1237)
at
org.eclipse.emf.ecore.xmi.impl.XMLHandler.createObjectByType(XMLHandler.java:1165)
at
org.eclipse.emf.ecore.xmi.impl.XMLHandler.createTopObject(XMLHandler.java:1247)
at
org.eclipse.emf.ecore.xmi.impl.XMLHandler.processElement(XMLHandler.java:883)
at
org.eclipse.emf.ecore.xmi.impl.XMLHandler.startElement(XMLHandler.java:866)
at
org.eclipse.emf.ecore.xmi.impl.XMLHandler.startElement(XMLHandler.java:627)
at
org.apache.tuscany.sdo.util.resource.SDOXMLResourceImpl$SDOXMLLoadImpl$XmlHandler.startElement(SDOXMLResourceImpl.java:405)
at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:501)
at
com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:400)
at
com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl$NSContentDriver.scanRootElementHook(XMLNSDocumentScannerImpl.java:626)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:3088)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:914)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:647)
at
com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:140)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:508)
at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:807)
at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
at
com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:107)
at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
at
com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
at javax.xml.parsers.SAXParser.parse(SAXParser.java:395)
at org.eclipse.emf.ecore.xmi.impl.XMLLoadImpl.load(XMLLoadImpl.java:268)
... 50 more
Regards
Raman
