I'm trying to use the Ant task to enhance a class having a field with a custom converter attached, and I'm getting the following class-cast exception. Any ideas what might be causing it, or how to work around it?

Possibly related to https://github.com/datanucleus/datanucleus-api-jdo/commit/292a6f7406dca64d0a36bd80cc88aeaf2702fd03#diff-8594a4363362c80353728def595f5db3

I'd be glad to create a minimized test-case if needed.

[ant:enhance] 21:06:42.254 [main] DEBUG DataNucleus.Enhancer - Enhancing classes

[ant:enhance] 21:06:42.255 [main] DEBUG DataNucleus.MetaData - MetaData Management : Loading Metadata for metadata files "[/home/user/dev/github_cmosher01/Genealdb/build/resources/main/META-INF/package.jdo]" ...

[ant:enhance] 21:06:42.259 [main] DEBUG DataNucleus.MetaData - Parsing MetaData file "file:/home/user/dev/github_cmosher01/Genealdb/build/resources/main/META-INF/package.jdo" using handler "jdo" (validation="false")

[ant:enhance] 21:06:42.275 [main] ERROR DataNucleus.MetaData - An error occurred while parsing <"field"> nested within "org.datanucleus.metadata.ClassMetaData@3c9bfddc [nu.mine.mosher.genealdb.model.Day], modifier=persistence-capable, members.size=0" for URI "http://xmlns.jcp.org/xml/ns/jdo/jdo"

[ant:enhance] java.lang.ClassCastException: org.datanucleus.enhancer.EnhancementNucleusContextImpl cannot be cast to org.datanucleus.PersistenceNucleusContext

[ant:enhance]   at org.datanucleus.api.jdo.metadata.JDOMetaDataHandler.newFieldObject(JDOMetaDataHandler.java:300) ~[datanucleus-api-jdo-5.1.5.jar:?]

[ant:enhance]   at org.datanucleus.api.jdo.metadata.JDOMetaDataHandler.startElement(JDOMetaDataHandler.java:677) [datanucleus-api-jdo-5.1.5.jar:?]

[ant:enhance]   at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:509) [?:?]

[ant:enhance]   at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:183) [?:?]

[ant:enhance]   at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:351) [?:?]

[ant:enhance]   at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2706) [?:?]

[ant:enhance]   at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:601) [?:?]

[ant:enhance]   at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:112) [?:?]

[ant:enhance]   at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:531) [?:?]

[ant:enhance]   at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:885) [?:?]

[ant:enhance]   at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:821) [?:?]

[ant:enhance]   at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141) [?:?]

[ant:enhance]   at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213) [?:?]

[ant:enhance]   at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:639) [?:?]

[ant:enhance]   at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl.parse(SAXParserImpl.java:323) [?:?]

[ant:enhance]   at javax.xml.parsers.SAXParser.parse(SAXParser.java:196) [?:?]

[ant:enhance]   at org.datanucleus.metadata.xml.MetaDataParser.parseMetaDataStream(MetaDataParser.java:290) [datanucleus-core-5.1.8.jar:?]

[ant:enhance]   at org.datanucleus.metadata.xml.MetaDataParser.parseMetaDataURL(MetaDataParser.java:190) [datanucleus-core-5.1.8.jar:?]

[ant:enhance]   at org.datanucleus.api.jdo.metadata.JDOMetaDataManager.parseFile(JDOMetaDataManager.java:253) [datanucleus-api-jdo-5.1.5.jar:?]

[ant:enhance]   at org.datanucleus.metadata.MetaDataManagerImpl.loadFiles(MetaDataManagerImpl.java:1425) [datanucleus-core-5.1.8.jar:?]

[ant:enhance]   at org.datanucleus.metadata.MetaDataManagerImpl.loadMetadataFiles(MetaDataManagerImpl.java:527) [datanucleus-core-5.1.8.jar:?]

[ant:enhance]   at org.datanucleus.enhancer.DataNucleusEnhancer.getFileMetadataForInput(DataNucleusEnhancer.java:732) [datanucleus-core-5.1.8.jar:?]

[ant:enhance]   at org.datanucleus.enhancer.DataNucleusEnhancer.enhance(DataNucleusEnhancer.java:501) [datanucleus-core-5.1.8.jar:?]

[ant:enhance]   at org.datanucleus.enhancer.DataNucleusEnhancer.main(DataNucleusEnhancer.java:1157) [datanucleus-core-5.1.8.jar:?]

Thank you,

Chris Mosher