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Posted to dev@tuscany.apache.org by "Travis Nelson (JIRA)" <tu...@ws.apache.org> on 2007/09/26 17:44:50 UTC
[jira] Created: (TUSCANY-1810) SDOUtil.createHelperContext() fails
with NPE on HP-UX and Solaris
SDOUtil.createHelperContext() fails with NPE on HP-UX and Solaris
-----------------------------------------------------------------
Key: TUSCANY-1810
URL: https://issues.apache.org/jira/browse/TUSCANY-1810
Project: Tuscany
Issue Type: Bug
Components: Java SDO Implementation
Affects Versions: Java-SDO-1.0
Environment: This fails on HP-UX and Solaris. It works fine on all other platforms tested.
Reporter: Travis Nelson
Priority: Blocker
The following exception is thrown when attempting to create the helper context:
java.lang.NullPointerException
at org.eclipse.emf.ecore.impl.EPackageRegistryImpl$Delegator.getEFactory(EPackageRegistryImpl.java:250)
at org.eclipse.emf.ecore.impl.EcoreFactoryImpl.init(EcoreFactoryImpl.java:55)
at org.eclipse.emf.ecore.EcoreFactory.<clinit>(EcoreFactory.java:35)
at org.eclipse.emf.ecore.util.BasicExtendedMetaData.<clinit>(BasicExtendedMetaData.java:2139)
at org.apache.tuscany.sdo.helper.DefaultHelperContextImpl.<init>(DefaultHelperContextImpl.java:31)
at org.apache.tuscany.sdo.helper.HelperProviderImpl.createDefaultHelpers(HelperProviderImpl.java:37)
at org.apache.tuscany.sdo.spi.HelperProviderBase.<init>(HelperProviderBase.java:81)
at org.apache.tuscany.sdo.helper.HelperProviderImpl.<init>(HelperProviderImpl.java:30)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
at java.lang.Class.newInstance0(Class.java:350)
at java.lang.Class.newInstance(Class.java:303)
at commonj.sdo.impl.HelperProvider.loadImplementation(HelperProvider.java:157)
at commonj.sdo.impl.HelperProvider.getInstance(HelperProvider.java:126)
at commonj.sdo.impl.HelperProvider.<clinit>(HelperProvider.java:69)
at org.apache.tuscany.sdo.api.SDOUtil.<clinit>(SDOUtil.java:47)
at org.apache.tuscany.sdo.util.SDOUtil.createHelperContext(SDOUtil.java:389)
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[jira] Closed: (TUSCANY-1810) SDOUtil.createHelperContext() fails
with NPE on HP-UX and Solaris
Posted by "Travis Nelson (JIRA)" <tu...@ws.apache.org>.
[ https://issues.apache.org/jira/browse/TUSCANY-1810?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Travis Nelson closed TUSCANY-1810.
----------------------------------
Resolution: Invalid
this is really a defect against either EMF or the Sun JREs for those platforms.
> SDOUtil.createHelperContext() fails with NPE on HP-UX and Solaris
> -----------------------------------------------------------------
>
> Key: TUSCANY-1810
> URL: https://issues.apache.org/jira/browse/TUSCANY-1810
> Project: Tuscany
> Issue Type: Bug
> Components: Java SDO Implementation
> Affects Versions: Java-SDO-1.0
> Environment: This fails on HP-UX and Solaris. It works fine on all other platforms tested.
> Reporter: Travis Nelson
> Priority: Blocker
>
> The following exception is thrown when attempting to create the helper context:
> java.lang.NullPointerException
> at org.eclipse.emf.ecore.impl.EPackageRegistryImpl$Delegator.getEFactory(EPackageRegistryImpl.java:250)
> at org.eclipse.emf.ecore.impl.EcoreFactoryImpl.init(EcoreFactoryImpl.java:55)
> at org.eclipse.emf.ecore.EcoreFactory.<clinit>(EcoreFactory.java:35)
> at org.eclipse.emf.ecore.util.BasicExtendedMetaData.<clinit>(BasicExtendedMetaData.java:2139)
> at org.apache.tuscany.sdo.helper.DefaultHelperContextImpl.<init>(DefaultHelperContextImpl.java:31)
> at org.apache.tuscany.sdo.helper.HelperProviderImpl.createDefaultHelpers(HelperProviderImpl.java:37)
> at org.apache.tuscany.sdo.spi.HelperProviderBase.<init>(HelperProviderBase.java:81)
> at org.apache.tuscany.sdo.helper.HelperProviderImpl.<init>(HelperProviderImpl.java:30)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
> at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
> at java.lang.Class.newInstance0(Class.java:350)
> at java.lang.Class.newInstance(Class.java:303)
> at commonj.sdo.impl.HelperProvider.loadImplementation(HelperProvider.java:157)
> at commonj.sdo.impl.HelperProvider.getInstance(HelperProvider.java:126)
> at commonj.sdo.impl.HelperProvider.<clinit>(HelperProvider.java:69)
> at org.apache.tuscany.sdo.api.SDOUtil.<clinit>(SDOUtil.java:47)
> at org.apache.tuscany.sdo.util.SDOUtil.createHelperContext(SDOUtil.java:389)
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[jira] Commented: (TUSCANY-1810) SDOUtil.createHelperContext()
fails with NPE on HP-UX and Solaris
Posted by "Kelvin Goodson (JIRA)" <tu...@ws.apache.org>.
[ https://issues.apache.org/jira/browse/TUSCANY-1810?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12530663 ]
Kelvin Goodson commented on TUSCANY-1810:
-----------------------------------------
This looks like an EMF problem. The failure seems to be in the EMF code at
at org.eclipse.emf.ecore.impl.EPackageRegistryImpl$Delegator.getEFactory(EPackageRegistryImpl.java:250)
which is ......
return delegateRegistry().getEFactory(key);
suggesting null return from ...
protected EPackage.Registry delegateRegistry()
{
return delegateRegistry(Thread.currentThread().getContextClassLoader());
}
which eventually ends up in ...
public static synchronized EPackage.Registry getRegistry(ClassLoader classLoader)
{
EPackage.Registry result = (EPackage.Registry)classLoaderToRegistryMap.get(classLoader);
if (result == null)
{
if (classLoader == null)
{
result = null;
}
else
{
result = new EPackageRegistryImpl(getRegistry(classLoader.getParent()));
classLoaderToRegistryMap.put(classLoader, result);
}
}
return result;
}
it would appear to me by eyeballing that code that the supplied ClassLoader is null (obtained by Thread.currentThread().getContextClassLoader()). I'm not expert in understanding in what circumstances that might happen.
Could you please run this tiny program which I think embodies the issue in your environments, with the EMF 2.2.3 jars on your classpath, please and report the result. If this fails then the problem needs to be reported to EMF.
package org.apache.tuscany.sdo.test;
import org.eclipse.emf.ecore.EDataType;
import org.eclipse.emf.ecore.EcoreFactory;
public class EMFInit {
protected static final EDataType UNINITIALIZED_EDATA_TYPE = EcoreFactory.eINSTANCE.createEDataType();
public static void main(String[] args) {
System.out.println("Uninitialised data type is " + (UNINITIALIZED_EDATA_TYPE == null ? "null" : "not null"));
}
}
> SDOUtil.createHelperContext() fails with NPE on HP-UX and Solaris
> -----------------------------------------------------------------
>
> Key: TUSCANY-1810
> URL: https://issues.apache.org/jira/browse/TUSCANY-1810
> Project: Tuscany
> Issue Type: Bug
> Components: Java SDO Implementation
> Affects Versions: Java-SDO-1.0
> Environment: This fails on HP-UX and Solaris. It works fine on all other platforms tested.
> Reporter: Travis Nelson
> Priority: Blocker
>
> The following exception is thrown when attempting to create the helper context:
> java.lang.NullPointerException
> at org.eclipse.emf.ecore.impl.EPackageRegistryImpl$Delegator.getEFactory(EPackageRegistryImpl.java:250)
> at org.eclipse.emf.ecore.impl.EcoreFactoryImpl.init(EcoreFactoryImpl.java:55)
> at org.eclipse.emf.ecore.EcoreFactory.<clinit>(EcoreFactory.java:35)
> at org.eclipse.emf.ecore.util.BasicExtendedMetaData.<clinit>(BasicExtendedMetaData.java:2139)
> at org.apache.tuscany.sdo.helper.DefaultHelperContextImpl.<init>(DefaultHelperContextImpl.java:31)
> at org.apache.tuscany.sdo.helper.HelperProviderImpl.createDefaultHelpers(HelperProviderImpl.java:37)
> at org.apache.tuscany.sdo.spi.HelperProviderBase.<init>(HelperProviderBase.java:81)
> at org.apache.tuscany.sdo.helper.HelperProviderImpl.<init>(HelperProviderImpl.java:30)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
> at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
> at java.lang.Class.newInstance0(Class.java:350)
> at java.lang.Class.newInstance(Class.java:303)
> at commonj.sdo.impl.HelperProvider.loadImplementation(HelperProvider.java:157)
> at commonj.sdo.impl.HelperProvider.getInstance(HelperProvider.java:126)
> at commonj.sdo.impl.HelperProvider.<clinit>(HelperProvider.java:69)
> at org.apache.tuscany.sdo.api.SDOUtil.<clinit>(SDOUtil.java:47)
> at org.apache.tuscany.sdo.util.SDOUtil.createHelperContext(SDOUtil.java:389)
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[jira] Commented: (TUSCANY-1810) SDOUtil.createHelperContext()
fails with NPE on HP-UX and Solaris
Posted by "Travis Nelson (JIRA)" <tu...@ws.apache.org>.
[ https://issues.apache.org/jira/browse/TUSCANY-1810?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12531185 ]
Travis Nelson commented on TUSCANY-1810:
----------------------------------------
Thank you very much. It turns out that the thread context classloader is null when using JNI, on the Sun JREs on certain UNIX platforms, and that causes the EMF failure. For now, I can work around the issue.
> SDOUtil.createHelperContext() fails with NPE on HP-UX and Solaris
> -----------------------------------------------------------------
>
> Key: TUSCANY-1810
> URL: https://issues.apache.org/jira/browse/TUSCANY-1810
> Project: Tuscany
> Issue Type: Bug
> Components: Java SDO Implementation
> Affects Versions: Java-SDO-1.0
> Environment: This fails on HP-UX and Solaris. It works fine on all other platforms tested.
> Reporter: Travis Nelson
> Priority: Blocker
>
> The following exception is thrown when attempting to create the helper context:
> java.lang.NullPointerException
> at org.eclipse.emf.ecore.impl.EPackageRegistryImpl$Delegator.getEFactory(EPackageRegistryImpl.java:250)
> at org.eclipse.emf.ecore.impl.EcoreFactoryImpl.init(EcoreFactoryImpl.java:55)
> at org.eclipse.emf.ecore.EcoreFactory.<clinit>(EcoreFactory.java:35)
> at org.eclipse.emf.ecore.util.BasicExtendedMetaData.<clinit>(BasicExtendedMetaData.java:2139)
> at org.apache.tuscany.sdo.helper.DefaultHelperContextImpl.<init>(DefaultHelperContextImpl.java:31)
> at org.apache.tuscany.sdo.helper.HelperProviderImpl.createDefaultHelpers(HelperProviderImpl.java:37)
> at org.apache.tuscany.sdo.spi.HelperProviderBase.<init>(HelperProviderBase.java:81)
> at org.apache.tuscany.sdo.helper.HelperProviderImpl.<init>(HelperProviderImpl.java:30)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
> at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
> at java.lang.Class.newInstance0(Class.java:350)
> at java.lang.Class.newInstance(Class.java:303)
> at commonj.sdo.impl.HelperProvider.loadImplementation(HelperProvider.java:157)
> at commonj.sdo.impl.HelperProvider.getInstance(HelperProvider.java:126)
> at commonj.sdo.impl.HelperProvider.<clinit>(HelperProvider.java:69)
> at org.apache.tuscany.sdo.api.SDOUtil.<clinit>(SDOUtil.java:47)
> at org.apache.tuscany.sdo.util.SDOUtil.createHelperContext(SDOUtil.java:389)
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