NullPointerException happening on RecordsFactory.getRecords()

On RecordsFactory, within the method "getRecords", there is a check to see if the given reference formulation found in the mapping file is actually supported by the mapper. In the case of a non-supported reference formulation found, the code logs an error and leaves the execution run without returning from the method or throwing a controlled error.

// Select the Record Factory based on the reference formulation. if (!referenceFormulationRecordFactoryMap.containsKey(referenceFormulation)) { logger.error("Referenceformulation {} is unsupported!", referenceFormulation); } ReferenceFormulationRecordFactory factory = referenceFormulationRecordFactoryMap.get(referenceFormulation); records = factory.getRecords(access, logicalSource, rmlStore);

Instead what happens is a factory is tried to be retrieved and use this reference, which leads to a NullPointerExcepcion that in turn gets propagated all the way up the Executor class. This happens between lines 138 and 142 of the class RecordsFactory.

Start in RecordsFactory.getRecords around lines 138–142 and inspect how unsupported reference formulations are handled before the factory lookup. Reproduce the case with a mapping entry that the mapper does not support, then verify that execution no longer propagates a NullPointerException and instead follows the intended controlled error path.