Details
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Bug
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Status: Closed
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Major
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Resolution: Not A Problem
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Java-SDO-1.1
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None
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Tuscany 1.6 resp 1.7 snapshot, JDK 1.6.0_21, Eclipse Helios, Windows XP
Description
Creation of static SDOs for which classes have been generated from XSD does not work as expected.
In particular, I created a data object for a type which has a statically generated class, but unexpectedly
got back an instance of DynamicDataObjectImpl.
A trelated error maybe that even when I create the static SDO directly from the factory, when I later
try to return it over an XMI binding, I get a PackageNotFoundException.
Here are the details:
I created the types using XSD2JavaGenerator from this XSD:
<?xml version="1.0" encoding="UTF-8"?>
<schema xmlns="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://psp.softwareag.com/catalogBaseType"
xmlns:catalogBaseType="http://psp.softwareag.com/catalogBaseType">
<complexType name="CatalogBaseType">
<attribute name="id" type="string"></attribute>
<attribute name="catalogID" type="string"></attribute>
<attribute name="fileName" type="string"></attribute>
<attribute name="catalogName" type="string"></attribute>
<attribute name="catalogStatus" type="string"></attribute>
<attribute name="supplierID" type="string"></attribute>
<attribute name="eclassVersion" type="string"></attribute>
</complexType>
<element name="catalogBaseType" type="catalogBaseType:CatalogBaseType"></element>
</schema>
The classes get generated in package com.softwareag.psp.catalog.base.type. I generated no interfaces ( I
ran XSD2JavaGenerator with the following options: -noInterfaces -noNotification -noUnsettable -prefix).
I have called the generated factory CatalogBaseTypeFactory.
Then in my coding (SCA service implementation) I do the following:
a) statically register the factory with the default context
static
b) create a data object from the targetNamespace of the XSD and the type name
DataObject obj = helperContext.getDataFactory().create(
"http://psp.softwareag.com/catalogBaseType", "CatalogBaseType");
Unexpectedly obj is an instance of DynamicDataObjectImpl, where I would have expected an instance
of CatalogBaseType instead.
When I call the service that returns this SDO using a Java RMI client, I also get an exception when trying to
deserialize the dynamic data object:
org.eclipse.emf.ecore.resource.Resource$IOWrappedException: Package with uri 'http://psp.softwareag.com/catalogBaseType' not found. (http:///temp.xml, 5, 24)
which is caused by an underlying org.eclipse.emf.ecore.xmi.PackageNotFoundException.
(see also my previous post with subject "SDO deserialization error")
This exception also occurs when I use a SDO of the correct type created with a call to the CatalogBaseTypeFactory.
Frank Budinsky commented on this on the mailing list:
>From: Frank Budinsky frankb@ca.ibm.com
>Sent: Thursday, October 07, 2010 3:30 PM
>To: user@tuscany.apache.org
>Subject: Re: SDO instance creation and deserialization error
>
>I think that should work, so my only guess is that maybe the SCA component and runtime are not using the same classLoader and/or >HelperContext (scope). Maybe someone with more SCA knowledge can help.
>
>Frank.
However, I suppose that the first problem (wrong type of SDO created) probably is not connected to SCA,
because there is no SCA code involved. It doesn't matter for this problem what context the SCA runtime
uses, because I use the default SDO context directly when registering the Factory and creating
the SDO.
The second problem (the PackageNotFoundException upon deserialization) may have to do with SCA,
because there is a mediating SCA transformer.
I attach an Eclipse project with the xsd, the generated classes and a test case.
When you start the com.softwareag.DataServiceLauncher with assertions enabled (-ea) and then run
com.softwareag.client.DataServiceRMITest, you will see
a) the AssertionError in com.softwareag.impl.DataServiceImpl for the SDO with unexpected type in test case testGetData()
b) the Exception on the client side when trying to receive the static SDO in test case testGetCatalogData()