Closed jatoledo closed 6 months ago
Hi,
I am also expriencing this issue. Additionally, does yatter parse YARRRML with functions into RML-FNML?
From the README.md
I see RML-FNML is supported, but I do not know if it is also supported in the conversion of YARRRML (with FNML) into RML-FNML.
Thanks, José Antonio
Hi @neobernad, The issue will be solved in the next release! In principle we support YARRRML with functions to RML-FNML, but if you have any problem please open an issue! You can see test cases here: https://github.com/oeg-upm/yatter/tree/main/test/rml-fnml
Hi @dachafra,
Thank you for your quick response. Happy to hear that out! :-)
Best, José Antonio
Hi @neobernad @jatoledo The issue is solved in the source code, if you want to use it, please install the engine from src! I'll make a release soon with more updates.
btw, remember that in yatter you can specify the join conditions in a shortcut way:
prefixes:
foaf: http://xmlns.com/foaf/0.1/
ex: http://example.com/
mappings:
student2:
sources:
- [ 'student.csv~csv' ]
s: http://example.com/$(Name)
po:
- p: foaf:name
o:
- function: join (mapping1, equal($(val1),$(val2)), equal($(val1),$(val2)))
- function: join (mapping1, equal($(val1),$(val2)))
- p: foaf:surname
o:
- function: join(mapping2, equal($(val1),$(val2)))
mapping1:
sources:
- [ 'student.csv~csv' ]
s: http://example.com/$(Name)
mapping2:
sources:
- [ 'student.csv~csv' ]
s: http://example.com/$(surname)
Hi @dachafra,
Sorry for commenting in a closed issue, I do not know if I should open a new one as it is still an issue regarding the YARRRML translation.
I have the following YARRRML file (actually it is longer and I have anonymized it):
prefixes:
ds_data: https://example.com/data/MyData/
ds_property: https://example.com/MyProperty/
rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns#
rdfs: http://www.w3.org/2000/01/rdf-schema#
grel: http://users.ugent.be/~bjdmeest/function/grel.ttl#
morph-kgc: https://github.com/morph-kgc/morph-kgc/function/built-in.ttl#
sources:
MyDataSource:
- data.xlsx
mappings:
PersonMappings:
sources: MyDataSource
s: ds_data:$(person_name)
po:
- [rdf:type, ds_property:Person]
- [rdfs:label, $(person_name), xsd:string]
The execution of the translation of the file above raises an exception ERROR: The YARRRML mapping has not been translated
:
yaml = YAML(typ='safe', pure=True)
rml_content = yatter.translate(yaml.load(open("mappings.yml")))
Here, rml_content
is None
.
What could be wrong? After having a quick look debugging yatter, it seems that the YARRRML file is being properly opened and parsed, but something in the translate
or get_non_asserted_mappings
methods is not liking the structure of the mappings perhaps?
Thanks, José Antonio
Please, can you open a new issue so I can maintain a proper tracing of everything? Thanks! I'll take a look right now, in any case
Error translating YARRRML to RML: IndexError: list index out of range
Yarrrml mapping: