If people haven’t seen it, our spec GitHub repo contains the diagrams
produced by transforming the ontology to PlantUML:
https://github.com/spdx/spdx-spec/tree/development/v2.2.1/ontology
<https://github.com/spdx/spdx-spec/tree/development/v2.2.1/ontology>
-- zvr
*From:* [email protected] <[email protected]> *On Behalf
Of *David Kemp
*Sent:* Tuesday, 27 July, 2021 21:39
*To:* SPDX-list <[email protected]>
*Subject:* [spdx-tech] GraphViz, PlantUML, and IdStrings
We discussed GraphViz and PlantUML today; here is the GraphViz version
of the SPDX 2.2 information model (level of detail: conceptual). You
can paste it into any number of tools, I like https://sketchviz.com/
<https://sketchviz.com/> (not because it has a sketchy mode, but because
the UI feels friendliest to me.)
As you can see, it does it's own layout. This is convenient and often
provides valuable insight, but isn't what a true artist like William
would put into a model diagram 😁. Artists need layout control, so a
format like diagrams.net <http://diagrams.net> (the new name for draw.io
<http://draw.io>) that gives that control is required.
-----------------------
Also look at the content of the GraphViz file. The IdStrings are simple
numbers n0-n37, each node ID is accompanied by hints ([label="xyz"]),
and the hints can be deleted without destroying the graph.
The graph will be laid out the same with or without the labels/hints,
and most importantly, n3 without a hint is the same node as n3 with a
hint. IdStrings should have this same property - hints do not affect
equality.
Dave
# title: SPDX v2.2 Information Model
# package: http://spdx.org/spdx-v2.2 <http://spdx.org/spdx-v2.2>
# license: CC0-1.0
# namespaces: {'ll': 'http://spdx.org/license-list
<http://spdx.org/license-list>'}
# exports: ['Document']
digraph G {
graph [fontname=Times, fontsize=12];
node [fontname=Arial, fontsize=8, shape=box, style=filled,
fillcolor=lightskyblue1];
edge [fontname=Arial, fontsize=7, arrowsize=0.5, labelangle=45.0,
labeldistance=0.9];
bgcolor="transparent";
n0 [label="Document"]
n0 -> n1 [label="externalDocumentRefs", headlabel="0..*",
taillabel="1"]
n0 -> n2 [label="creationInfo", headlabel="1", taillabel="1"]
n0 -> n3 [label="packages", headlabel="0..*", taillabel="1"]
n0 -> n4 [label="files", headlabel="1..*", taillabel="1"]
n0 -> n5 [label="snippets", headlabel="0..*", taillabel="1"]
n0 -> n36 [label="hasExtractedLicensingInfos", headlabel="0..*",
taillabel="1"]
n0 -> n6 [label="relationships", headlabel="0..*", taillabel="1"]
n0 -> n7 [label="annotations", headlabel="0..*", taillabel="1"]
n1 [label="External\nDocument\nRef"]
n1 -> n26 [label="checksum", headlabel="1", taillabel="1"]
n2 [label="Creation\nInfo"]
n3 [label="Package\nInfo"]
n3 -> n25 [label="packageVerificationCode", headlabel="0..1",
taillabel="1"]
n3 -> n26 [label="checksums", headlabel="0..*", taillabel="1"]
n3 -> n28 [label="externalRefs", headlabel="0..*", taillabel="1"]
n3 -> n7 [label="annotations", headlabel="0..*", taillabel="1"]
n4 [label="File\nInfo"]
n4 -> n26 [label="checksums", headlabel="0..*", taillabel="1"]
n4 -> n28 [label="externalRefs", headlabel="0..*", taillabel="1"]
n4 -> n7 [label="annotations", headlabel="0..*", taillabel="1"]
n4 -> n35 [label="artifactOf", headlabel="0..*", taillabel="1"]
n5 [label="Snippet\nInfo"]
n5 -> n33 [label="ranges", headlabel="1..*", taillabel="1"]
n5 -> n7 [label="annotations", headlabel="0..*", taillabel="1"]
n6 [label="Relationship"]
n7 [label="Annotation"]
n23 [label="Entity\nAlternate"]
n25 [label="Package\nVerification\nCode"]
n26 [label="Checksum"]
n27 [label="Checksum\nAlternate"]
n28 [label="External\nRef"]
n33 [label="Range"]
n33 -> n34 [label="startPointer", headlabel="1", taillabel="1"]
n33 -> n34 [label="endPointer", headlabel="1", taillabel="1"]
n34 [label="Range\nPointer"]
n35 [label="Artifact"]
n36 [label="Extra\nLicensing\nInfo"]
n37 [label="Cross\nRef"]
}
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