Use branch to test generating MarcXml by passing data through Metamorph

[dr0i]

See metafacture/metafacture-core#107.

[hagbeck]

I've merged your PR. And it works fine with the test data. Now I've applied the solution to a part of the target data and get an NPE in org.metafacture.biblio.marc21.MarcXmlEncoder.literal(MarcXmlEncoder.java:181)

Exception in thread "main" org.metafacture.metamorph.MetamorphException: Error while exectuing the Metamorph transformation pipeline: null
at org.metafacture.metamorph.DefaultErrorHandler.error(DefaultErrorHandler.java:33)
at org.metafacture.metamorph.Metamorph.send(Metamorph.java:329)
at org.metafacture.metamorph.Metamorph.dispatch(Metamorph.java:312)
at org.metafacture.metamorph.Metamorph$1.literal(Metamorph.java:200)
at org.metafacture.mangling.StreamFlattener.literal(StreamFlattener.java:105)
at org.metafacture.metamorph.Metamorph.literal(Metamorph.java:287)
at org.metafacture.biblio.marc21.MarcXmlHandler.startElement(MarcXmlHandler.java:63)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:509)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:374)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2784)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:602)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:112)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:505)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:842)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:771)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)
at org.metafacture.xml.XmlDecoder.process(XmlDecoder.java:65)
at org.metafacture.xml.XmlDecoder.process(XmlDecoder.java:42)
at org.metafacture.io.FileOpener.process(FileOpener.java:91)
at org.metafacture.io.FileOpener.process(FileOpener.java:40)
at org.metafacture.flux.parser.StringSender.process(StringSender.java:38)
at org.metafacture.flux.parser.Flow.start(Flow.java:110)
at org.metafacture.flux.parser.FluxProgramm.start(FluxProgramm.java:156)
at org.metafacture.runner.Flux.main(Flux.java:79)
Caused by: java.lang.NullPointerException
at org.metafacture.biblio.marc21.MarcXmlEncoder.literal(MarcXmlEncoder.java:181)
at org.metafacture.metamorph.Metamorph.receive(Metamorph.java:369)
at org.metafacture.metamorph.Data.receive(Data.java:36)
at org.metafacture.metamorph.Metamorph.send(Metamorph.java:327)
... 23 more