Does PlantUML support references between class/component members

Question

I want to link members of class or components.
Here is an example:

@startuml

object user

user : id

user : name

user : email

 

object project {

id

name

description

user_id

}

 

' And now I try to link directly the members

project.user_id -> user.id

@enduml

 

The DOT syntax itself allows something like this:

See: http://www.graphviz.org/doc/info/shapes.html Chapter Record-based nodes.

 

Does PlantUML support something similar? 

 

Answer 1

Hi,

Thank for the suggestion. However, PlantUML does not support this (yet).

The closest feature you can have is note attached to specific method/attribut of a class (see http://plantuml.sourceforge.net/qa/?qa=3474/attach-note-to-specific-method-attribut-of-a-class ).

We can allow notes for object attribut if you need it.

Using record-bases nodes of Graphviz to link class members is theorically possible. But this is not an easy move so we have to postpone it somehow. Sorry about that!

Regards,

Comments

Thanks for the fast answer.
Luckily PlantUML is still awesome enough.
Great work so long.

Answer 2

With last beta https://dl.dropboxusercontent.com/u/13064071/plantuml.jar

You can now have:

@startuml
class Foo {
+ field1
+ field2
}

class Bar {
+ field3
+ field4
}

Foo::field1 --> Bar::field3 : foo
Foo::field2 --> Bar::field4 : bar
@enduml

Note that this is still a beta version, so it may not work/crash in some case.
Feedback welcome!

Comments

Sorry for the really late response.

But finally: Works great :)
Would like to have it inside an official release.

Thanks a lot for the work!

---

It's not very documented, but it works with version 8052
http://www.plantuml.com/plantuml/uml/SoWkIImgAStDuKhEIImkLd3BprUevj9MICjCpKanX36Ck6gve0gS4eiG2enX31EG0g1UAok8HWLTNJkGKYZVMC5A8Iq_7qc54PeA4w2AfCGYBeVKl1IWQm00

---

Great! Another example is at https://forum.plantuml.net/5261

---

It doesn't work with PlantUML 1.2023.7 with the built-in Smetana renderer (and as of when I write this, homebrew installation of GraphViz on MacOs Ventura 13.4 is broken by a missing dependency)