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https://issues.apache.org/jira/browse/UIMA-5588?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marshall Schor resolved UIMA-5588.
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Resolution: Fixed
Assignee: Marshall Schor
> uv3: NPE during deserialization under certain circumstances
> -----------------------------------------------------------
>
> Key: UIMA-5588
> URL: https://issues.apache.org/jira/browse/UIMA-5588
> Project: UIMA
> Issue Type: Bug
> Components: Core Java Framework
> Affects Versions: 3.0.0SDK-beta
> Reporter: Richard Eckart de Castilho
> Assignee: Marshall Schor
>
> This was previously thought to be covered by UIMA-5586 - however, the problem
> remains after the order of the deserialization had been fixed in UIMA-5586.
> When deserializing some binary CAS formats, there is a NPE in certain cases.
> Here is an example that might serve for reproduction:
> {noformat}
> @Test
> public void test6LenientPlainUima() throws Exception
> {
> CAS source = JCasFactory.createJCas().getCas();
> CAS target = JCasFactory.createJCas().getCas();
> new DocumentMetaData(source.getJCas(), 0, 0).addToIndexes();
> @SuppressWarnings("resource")
> ByteArrayOutputStream bos = new ByteArrayOutputStream();
> CasIOUtils.save(source, bos, COMPRESSED_FILTERED);
> bos.close();
>
> CasIOUtils.load(new ByteArrayInputStream(bos.toByteArray()), target);
> }
> {noformat}
> Mind this is a minimal code for reproduction. The same happens when
> deserializing within the context of an initialized AnalysisEngine.
> The NPE only seems to be thrown when the `DocumentMetaData` is added via JCas:
> {noformat}
> java.lang.NullPointerException
> at org.apache.uima.cas.impl.CASImpl.getView(CASImpl.java:2224)
> at
> org.apache.uima.cas.impl.BinaryCasSerDes6.deserializeAfterVersion(BinaryCasSerDes6.java:1892)
> at
> org.apache.uima.cas.impl.BinaryCasSerDes.reinit(BinaryCasSerDes.java:595)
> at org.apache.uima.util.CasIOUtils.load(CasIOUtils.java:382)
> at org.apache.uima.util.CasIOUtils.load(CasIOUtils.java:313)
> at org.apache.uima.util.CasIOUtils.load(CasIOUtils.java:237)
> ...
> {noformat}
> I have set up a similar test using only the plain CAS API which seems to work
> fine:
> {noformat}
> @Test
> public void test6LenientPlainUima2() throws Exception
> {
> TypeSystemDescription tsd = new TypeSystemDescription_impl();
> TypeDescription td = tsd.addType("DocumentMetaData", "",
> CAS.TYPE_NAME_DOCUMENT_ANNOTATION);
> td.addFeature("feat", "", CAS.TYPE_NAME_STRING);
>
> CAS source = CasCreationUtils.createCas(tsd, null, null, null);
> CAS target = CasCreationUtils.createCas(tsd, null, null, null);
> AnnotationFS dmd = source
>
> .createAnnotation(source.getTypeSystem().getType("DocumentMetaData"), 0, 0);
> source.addFsToIndexes(dmd);
> assertEquals("DocumentMetaData",
> source.getDocumentAnnotation().getType().getName());
> @SuppressWarnings("resource")
> ByteArrayOutputStream bos = new ByteArrayOutputStream();
> CasIOUtils.save(source, bos, COMPRESSED_FILTERED);
> bos.close();
>
> CasIOUtils.load(new ByteArrayInputStream(bos.toByteArray()), target);
> }
> {noformat}
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