Support for MD with [[wikilinks]] and properties about sparql.anything

[enridaga]

OK, I found this link documenting Logseq properties: https://docs.logseq.com/#/page/properties

[enridaga]

SA currently extends org.commonmark library to identify the YAML frontmatter, so one can chain a SA clause to query those properties. One usage example is here

I haven't seen the key::value method before, so I must investigate.

About the wikilinks, I am curious about what type of interpretation you would expect, it will probably need to be something like the way SA currently interprets regular links, as in:

[A document with a link](http://www.example.org)

@prefix fx: <http://sparql.xyz/facade-x/ns/> .
@prefix xyz: <http://sparql.xyz/facade-x/data/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#>.

<http://www.example.org/document> a fx:root .
<http://www.example.org/document> a xyz:Document .
<http://www.example.org/document> rdf:_1 <http://www.example.org/document/paragraph/1> .
#
<http://www.example.org/document/paragraph/1> a xyz:Paragraph .
<http://www.example.org/document/paragraph/1> rdf:_1 <http://www.example.org/document/paragraph/1/link/1> .
#
<http://www.example.org/document/paragraph/1/link/1> a xyz:Link .
<http://www.example.org/document/paragraph/1/link/1> xyz:destination "http://www.example.org" .
<http://www.example.org/document/paragraph/1/link/1> rdf:_1 "A document with a link"

[kvistgaard]

I am curious about what type of interpretation you would expect

I would expect a specific SA property so that it's easy to distinguish and work with internal links (in most cases, they can be a resource of type Note, unless it has a specific type: or type:: or is a:: declaration, but let's keep it simple for now).

So, if we have two MD files A.md and B.md, and A.md contains a paragraph saying:

Something about [[B]]

then

<http://www.example.org/document/paragraph/1> a xyz:Paragraph ;
                                   xyz:mentions   <URI of B>  .

(I don't remember now in SA what will be the property linking the paragraph URI with the string Something about [[B]] , that's why I didn't add it in the example,)

Now, the URI of B is often provided is some way by the tool but if there is a too bg diversity then the file path of B can be used.

Then in many cases the inverse relationship becomes interesting: find me all paragraphs (and in which documents they are) which mention B or C, for example.

Some of these tools, have not only page (note) references with [[wikilinks]] but also block references, which in Clojure/Datalog tools like Logseq¹, Roam Research and Hulunote (there are two more are with (( )) and in Obsidian there is another mechanism) have dereferencible URIs, where one paragraph can mention another.

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Footnotes

1. By the way, I have used Logseq to publish a SHACL wiki and a SPARQL wiki. The latter one needs update and one of the things to add is a page about SA. ↩