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Can I create KDM model from only part of Java project? [message #1090559]

Tue, 20 August 2013 10:09

Matti Nauha

Messages: 1
Registered: August 2013

Junior Member

I'm trying to reverse engineer a big legacy project with MoDisco eclipse plugin. Tried doing a Java to KDM model discovery, but it failed because Java heap space got filled. So i increased the amount of memory, but now discovery process seems to be getting stuck at "Saving discovered model".

If i go and select single Java package from my project, only option i get for discovery is "KDM source" and that one doesn't contain any information about class relations etc.

Is there a way to create a KDM model from only some small part of Java project? Or is there some way to improve KDM discovery performance, when dealing with huge project?

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Re: Can I create KDM model from only part of Java project? [message #1091515 is a reply to message #1090559]

Wed, 21 August 2013 16:08

Hugo Bruneliere

Messages: 674
Registered: July 2009

Senior Member

Hello,

A solution is to work in two steps:

Discover the Java model by selecting only the packages you need (cf. the corresponding parameters in the launch configuration of the Java discoverer);
Transform this reduced Java model into the KDM model.

I hope this helps.

Best regards,

--------------------------------------------------------
Hugo Bruneliere, PhD
NaoMod team (IMT Atlantique & LS2N-CNRS)
Nantes - France
--------------------------------------------------------

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Re: Can I create KDM model from only part of Java project? [message #1713311 is a reply to message #1091515]

Tue, 03 November 2015 09:58

Salwa Alzahmi

Messages: 37
Registered: June 2013

Member

Hi,

I always run in java heap problem.
Would you please explain further how I can specified the packages that I want to consider in the discovery when I run the discovery task pragmatically .

thankx

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Re: Can I create KDM model from only part of Java project? [message #1713378 is a reply to message #1713311]

Tue, 03 November 2015 16:25

Fabien Giquel

Messages: 147
Registered: July 2009

Senior Member

Hello,

you should try to proceed in two steps as Hugo suggests : java source -> java reduced model -> kdm model.

The parameter to set for Java discoverery step is the one named "INCLUDED_ELEMENTS_REGEX" in ui. In the Java discoverer api, it can be set with the .setIncludedElementsRegEx(String regex) method.

The regex parameter allows to indicate a regular expression on qualified names for elements (types & packages) to be included during analysis.

For instance, if you want to select only types from pkga.pkgb.pkgc, you sets the value to pkga\.pkgb\.pkgc\..*

(there is also one opposite parameter EXCLUDED_ELEMENTS_REGEX)

I hope it will be helpful.
regards,
Fabien.

----------------------------------------------------
Fabien GIQUEL
R&D Engineer
Mia-Software
rue Nina Simone
44000 NANTES
----------------------------------------------------

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