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oeg-upm / morph-rdb

Virtual Knowledge Graph Creation from RDB with R2RML
https://morph.oeg.fi.upm.es/tool/morph-rdb
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Generate empty result set if any of the referenced columns of the term map has a NULL value #61

Closed arenas-guerrero-julian closed 3 years ago

arenas-guerrero-julian commented 3 years ago

For term maps with more than one attribute, previous behabiour was generating results in those cases one of the referenced columns had a null value. Now, these situatuon generates no results. This is working for term maps in predicates and objects. At this moment, term maps in subjects are not allowed to have null values in any situation.

Resolves #58

dachafra commented 3 years ago

and what happens if the term map is a column instead of a template? does it also work?

arenas-guerrero-julian commented 3 years ago

Only behaviour of templates is affected. In case of columns, results are generated when values are not null