[OWB-956] DefinitionException when iterateing over instance of org.apache.webbeans.inject.instance.InstanceImpl

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.2.5
• Assignee: Mark Struberg
• Reporter: Markus Frisch
• Created: 13/May/14 14:52
• Updated: 31/May/14 15:27
• Resolved: 14/May/14 08:52

Description

I get a DefinitionException when trying to iterate over an instance of org.apache.webbeans.inject.instance.InstanceImpl in the current snapshot of TomEE+ (i.e. in own 1.2.4).

What I am trying to do is:

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@Stateless
public class JobOperator {

@Inject
private Instance<MyBatchJob> batchJobs;

…

private MyBatchJob findMatchingJob(String jobName) {
MyBatchJob batchJob = null;
for (MyBatchJob job : batchJobs) {
if (job.getName().equalsIgnoreCase(jobName))

{ batchJob = job; break; }

}
if (batchJob == null)
throw new RuntimeException("There ain’t no Job named '" + jobName + "'.");
return batchJob;
}
————————8<————————>8————————
MyBatchJob is a common interface implemented by all my BatchJobs.

When this code is running I get the following Exception:

————————8<————————>8————————
org.apache.webbeans.exception.inject.DefinitionException: Unsupported type null
at org.apache.webbeans.util.ClassUtil.getClazz(ClassUtil.java:950)
at org.apache.webbeans.container.BeanManagerImpl.getEjbOrJmsProxyReference(BeanManagerImpl.java:804)
at org.apache.webbeans.container.BeanManagerImpl.getReference(BeanManagerImpl.java:740)
at org.apache.webbeans.inject.instance.InstanceImpl.iterator(InstanceImpl.java:270)
at de.nobiscum.rs7030.batch.boundary.JobOperator.findMatchingJob(JobOperator.java:162)
————————8<————————>8————————

I took a look at org.apache.webbeans.inject.instance.InstanceImpl<T> and found the following:

————————8<————————>8————————
public Iterator<T> iterator()
{
Set<Bean<?>> beans = resolveBeans();
List<T> instances = new ArrayList<T>();
parentCreationalContext.putInjectionPoint(injectionPoint);
try
{
for(Bean<?> bean : beans)
{
T instance = (T) webBeansContext.getBeanManagerImpl().getReference(bean,null, parentCreationalContext);
————————8<————————>8————————

It looks like this function is passing null as the beanType to getReference() which in gets handed down to ClassUtil.getClazz() which chokes on that.