UML Model Reverse Engineering
UML model reverse engineering is a complex processus.It provides not
only a byte-code reverse engineering engine, but also an migration
capability from Free edition to Enterprise edition. In terms of data
flow, it read from :
- UML Repository created by EclipseUML free edition: it parts of
the migration processus
- Existing UML Model stored as annotation in Java source
- the UML Model produced by bytecode engine

And finally, the results are stored back as annotation
into Java sources.
The Reverse engineering processus consists of three steps:
1. Setup Preferences
First, it is very important to set up some Preferences in Eclipse:
These preferences influence the Reverse engineering results.
2. Launch Reverse Engineering
There are two ways to invoke UML Model reverse engineering:
-
2.1 Automatical Reverse Engineering
When you create the first diagram in a Java project, the Reverse
Engineering is started automatically. There are two possibilities to
create a class diagram: using UML
new wizard or calling short cut menu.For the second solution, you
need select one package in the Package explorer and right click on the
mouse to call the context menu UML>Class diagram editor as
following:

2.2 Explicit Reverse Engineering
It is also possible to perform the Reverse Engineering whenever you
want by selecting the Java Project in Package explorer and then right
click to call the contexte menu: UML>Reverse engineering:

3. Model Source Options
The Reverse Engineering has different options if the Java project
contains already UML models from EclipseUML free edition.
3.1 Reverse engineering without migration
If the Java project has never touched by EclipseUML free edition,
when you Reverse engineering is activated, you will get following
option dialog:

It is possible to change some options to select the model sources.

3.2 Reverse with migration
If the project contains the UML repository created within EclipseUML
free edition, a warning dialog will alarm that the Reverse engineering
is irreversible.

If you confirm the operation, you will get following option dialog:

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