TaskContextNotFoundException when specifying a single-valued array in a discriminator

[GoogleCodeExporter]

This works: 

Map<String, Object> dimReaders = new HashMap<String, Object>();
dimReaders.put(DIM_READER_TRAIN, TwentyNewsgroupsCorpusReader.class);
dimReaders.put(DIM_READER_TRAIN_PARAMS,
   Arrays.asList(new Object[] {...,
   TwentyNewsgroupsCorpusReader.PARAM_PATTERNS, new String[] { INCLUDE_PREFIX + "*.xml", INCLUDE_PREFIX + "*.xml.gz" } }));
Dimension.createBundle("readers", dimReaders);

This doesn't work:

Map<String, Object> dimReaders = new HashMap<String, Object>();
dimReaders.put(DIM_READER_TRAIN, TwentyNewsgroupsCorpusReader.class);
dimReaders.put(DIM_READER_TRAIN_PARAMS,
   Arrays.asList(new Object[] {...,
   TwentyNewsgroupsCorpusReader.PARAM_PATTERNS, new String[] { INCLUDE_PREFIX + "*/*.txt" } }));
Dimension.createBundle("readers", dimReaders);

To reproduce: go to 
de.tudarmstadt.ukp.dkpro.tc.examples.single.document.TwentyNewsgroupsDemo.java 
in the de.tudarmstadt.ukp.dkpro.tc.examples-gpl module of DKPro-TC, and add 
"new String[]" to the TwentyNewsgroupsCorpusReader.PARAM_PATTERNS parameter of 
the readers. Given the misuse of the PATTERNS parameter, this issue not be a 
big deal, but I'm keeping it here for the record.

Original issue reported on code.google.com by [email protected] on 20 May 2014 at 7:15