How to create Sequence Diagrams in Jdev 10.1.3?

Question

Hi there,
I´m migrating (trying) from Eclipse to JDeveloper and I´m having several dificulties....
I´m creating a new project in JDeveloper:
0) create an application workspace [ok]
1) create a web application project [ok]
2) create some packages and Java classes [ok]
3) create a class diagram related to the
above classes [ok]
4) create a sequence diagram [ok]
5) use the classes into the sequence
diagram [more and less]
6) use the methods of the classes into
the message lines of the sequence
diagram [no]
Some observations that are messing me:
1) Do I need to create an "Object Lifetime" for
every class and after that select "Attach Classifier" ?? Why I can´t just drag the classes into the diagram (like Jude) ?
2) Can I use the methods already defined in the classes to create messages in the sequence diagram?
3) The sequence diagram od JDeveloper is disconnected from the project classes? i.e., is it just a draw ?
best regards,
Felipe Gaúcho

Answer 1

Hi,
I am glad to find that you are working on the sequence diagram. I take your point about selecting the methods and assigning them to the messages. Unfortunately this feature is gated by some architecture changes and it something I will be actively pursuing as soon as it is possible.
In reply to your other points:
1) Do I need to create an "Object Lifetime" for
every class and after that select "Attach Classifier" ?? > Why I can´t just drag the classes into the diagram (like > Jude) ?The reason for this is that the sequence modeler is simply a view onto a single diagram type that can contain any object. This allows the mingling of different UML type on the same diagram. It can be usefull to mix usecase and seqeunce for example.
For that reason the default action for java class is to model a java class, and you do indeed need to create a lifeline first. Did you know you could drag and drop the classifier, in your case a java class, from the navigator onto the lifeline. This might be quicker in your case.
2) Can I use the methods already defined in the classes > to create messages in the sequence diagram?As noted before in the preview you can't select existing messages. This is something we would like to add as soon as it is possible.
3) The sequence diagram od JDeveloper is disconnected
from the project classes? i.e., is it just a draw ?The sequence modeler isn't totally disconnected from the project classes; but it wont update as you edit the code if this is what you mean.
Could you perhaps expand on this point a little bit?
Thanks,
Gerard Davison
UML Modelers