[
https://issues.apache.org/jira/browse/UIMA-5054?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15419186#comment-15419186
]
Richard Eckart de Castilho edited comment on UIMA-5054 at 8/12/16 7:23 PM:
---------------------------------------------------------------------------
I'm having some difficulting running this. I have an eclipse project defined,
with the current levels of uimaFIT as dependency, and running with the current
trunk level of uimaj-core.
I have a null pointer exception with this trace-back, I think in the CPE cas
consumer:
{noformat}
Thread [[CollectionReader Thread]::] (Suspended (exception
NullPointerException))
FSIndexRepositoryImpl.getIndex(String, Type) line: 2465
CASImpl.getAnnotationIndex(Type) line: 4604
ConsumerCasUtils.getStringFeatValue(CAS, String, String) line: 70
ArtifactProducer.readNext(int) line: 556
ArtifactProducer.run() line: 711
{noformat}
The ConsumerCasUtils.getStringFeatValue is being passed the String for the
aTypeS the value "uima.cpm.DocumentMetadata", and is looking this up in the
type system.
But in this example, there is no such type. There is a type DocumentMetadata,
but it's got a uimaFIT package name:
de.tudarmstadt.ukp.dkpro.core.api.metadata.type.DocumentMetaData
Note: the capitalization of MetaData vs Metadata, also
Any ideas how to fix this issue (so I can get to the reported issue)?
was (Author: schor):
I'm having some difficulting running this. I have an eclipse project defined,
with the current levels of uimaFIT as dependency, and running with the current
trunk level of uimaj-core.
I have a null pointer exception with this trace-back, I think in the CPE cas
consumer:
Thread [[CollectionReader Thread]::] (Suspended (exception
NullPointerException))
FSIndexRepositoryImpl.getIndex(String, Type) line: 2465
CASImpl.getAnnotationIndex(Type) line: 4604
ConsumerCasUtils.getStringFeatValue(CAS, String, String) line: 70
ArtifactProducer.readNext(int) line: 556
ArtifactProducer.run() line: 711
The ConsumerCasUtils.getStringFeatValue is being passed the String for the
aTypeS the value "uima.cpm.DocumentMetadata", and is looking this up in the
type system.
But in this example, there is no such type. There is a type DocumentMetadata,
but it's got a uimaFIT package name:
de.tudarmstadt.ukp.dkpro.core.api.metadata.type.DocumentMetaData
Note: the capitalization of MetaData vs Metadata, also
Any ideas how to fix this issue (so I can get to the reported issue)?
> JCas returning generic class instead of JCas cover class
> --------------------------------------------------------
>
> Key: UIMA-5054
> URL: https://issues.apache.org/jira/browse/UIMA-5054
> Project: UIMA
> Issue Type: Bug
> Components: Collection Processing
> Affects Versions: 2.8.1SDK
> Reporter: Richard Eckart de Castilho
> Fix For: 2.9.0SDK
>
>
> A DKPro Core user reported that when deploying an AE in a CPE
> he was unable to access a JCas cover class in the
> entityProcessComplete(...) CPE callback. See:
> https://groups.google.com/d/msg/dkpro-core-user/-DtO5Ivnk9I/sjQAPPv1BwAJ
> {noformat}
> public void entityProcessComplete(CAS cas, EntityProcessStatus
> status) {
> try {
> JCas jcas = cas.getJCas();
> // here getting a JCas cover class fails. Instead,
> // an AnnotationImpl is returned from the jcas.
> } catch (CASException e) {
> e.printStackTrace();
> }
> }
> {noformat}
> The problem appears to be that the static CAS classloaders are restored
> *before* invoking the entityProcessComplete() callback (CPMEngine 3468):
> {noformat}
> try {
> if (null != cas)
> ((CASImpl)cas).switchClassLoaderLockCas(statCL);
> statCL.entityProcessComplete(cas, eps);
> } finally {
> if (null != cas)
> ((CASImpl)cas).restoreClassLoaderUnlockCas();
> }
> {noformat}
> Is there any reason that the classloaders are switched out before invoking
> the callback? If not, any objection if I change the code such that the
> callback is invoked before the classloaders are switched out?
> {noformat}
> Thread [[Procesing Pipeline#7 Thread]::] (Suspended (breakpoint at line 1021
> in CASImpl))
> CASImpl.setLocalFsGenerators(FSGenerator<FeatureStructure>[]) line:
> 1021
> FSClassRegistry.swapInGeneratorsForClassLoader(ClassLoader, CASImpl)
> line: 225
> JCasImpl.switchClassLoader(ClassLoader) line: 548
> CASImpl.switchClassLoader(ClassLoader) line: 4195
> CASImpl.switchClassLoaderLockCasCL(ClassLoader) line: 4183
> CASImpl.switchClassLoaderLockCas(Object) line: 4176
> CPMEngine.callEntityProcessCompleteWithCAS(StatusCallbackListener, CAS,
> EntityProcessStatus) line: 3472
> ProcessingUnit.doNotifyListeners(Object, boolean, EntityProcessStatus)
> line: 1650
> ProcessingUnit.notifyListeners(Object, boolean, EntityProcessStatus)
> line: 1592
> ProcessingUnit.processNext(Object[], ProcessTrace) line: 917
> ProcessingUnit.run() line: 575
> {noformat}
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
