Bugs and Caveats

Specifications and tools from rml.io

RML, YARRRML, and yarrrml-parser

• Mapping deeper structures cannot be done with RDF containers since they are not supported (yet). One solution is to create different mappings for the different levels of the data structure, and then linking them. However, this approach has been causing memory issues in RocketRML. Relevant issues in yarrrml-parser: issue 1, issue 2, issue 3
• Be careful when declaring sources and targets with shorthand notation
• yarrrml-parser uses advanced ES syntax so Babel needs to be configured to transpile the required code

Other tools

RocketRML

• RocketRML is a Node.js library, but I was able to get it working as a client library by proper webpack configuration
• Targets are not supported
• Memory issues
• Mapping nested structure directly does not work in RocketRML