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Very basic tutorial about a new project for ETL [message #1715549]

Tue, 24 November 2015 10:57

Andrea Vassallo

Messages: 8
Registered: November 2015

Junior Member

Hi all
I need to transform a RDF/XML model to a Matlab structure.
I don't know the correct manner to create the right projetct type, where to locate my RDF/XML model, what type of file generate (.eol, .etl ?).
I read Epsilon Book but I'm confused about how to start.

Thanks

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Re: Very basic tutorial about a new project for ETL [message #1715564 is a reply to message #1715549]

Tue, 24 November 2015 11:44

daniele di pompeo

Messages: 20
Registered: February 2015

Junior Member

Hi,
you should start from the standalone example (inside the git repository[1]).

[1] git repository

cheers
Daniele

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Re: Very basic tutorial about a new project for ETL [message #1715568 is a reply to message #1715564]

Tue, 24 November 2015 12:11

Andrea Vassallo

Messages: 8
Registered: November 2015

Junior Member

Hi Daniele,
Once I go at the link you suggested me, where can I find the standalone example?
Thanks

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Re: Very basic tutorial about a new project for ETL [message #1715633 is a reply to message #1715568]

Tue, 24 November 2015 19:52

Dimitris Kolovos

Messages: 2182
Registered: July 2009
Location: York, UK

Senior Member

Hi Andrea,

The standalone and several other examples are available under the examples/ folder of the Git repo. Please note that the standalone example is a good starting point mainly if you intend to run your EOL/ETL transformation from a standalone Java program. If you plan to run your transformation within Eclipse using the Epsilon development tools, the org.eclipse.epsilon.examples.buildooinstance and org.eclipse.epsilon.examples.tree2graph examples would be a better starting point for your exploration. It would be useful to also go through the Epsilon book and the screencasts [2, 3] if you haven't done so already.

Cheers,
Dimitris

[1] https://git.eclipse.org/c/epsilon/org.eclipse.epsilon.git/tree/examples
[2] http://www.eclipse.org/epsilon/doc/book
[3] https://www.youtube.com/epsilondevs

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Re: Very basic tutorial about a new project for ETL [message #1715677 is a reply to message #1715633]

Wed, 25 November 2015 08:38

Andrea Vassallo

Messages: 8
Registered: November 2015

Junior Member

Thank you Daniele and Dimitris,
I managed to clone the git repository and I'm starting to explore the examples.

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Re: Very basic tutorial about a new project for ETL [message #1715712 is a reply to message #1715677]

Wed, 25 November 2015 11:47

Andrea Vassallo

Messages: 8
Registered: November 2015

Junior Member

I read the documentation and explored many examples. Now I'm little bit confused.
Can you suggest me a correct way to operate?

As I said I have a RDF/XML model and I want to transform it in a Matlab structure.

I think the first step should be to create a .model from the RDF/XML file and I can do this using eol?
The second step should be to define some rules to transform the objects contained in the RDF model to the Matlab structure.

What type of files I have to write? (.eol , .etl, .launch?)

Thanks

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Re: Very basic tutorial about a new project for ETL [message #1716000 is a reply to message #1715712]

Mon, 30 November 2015 10:59

daniele di pompeo

Messages: 20
Registered: February 2015

Junior Member

Hi Andrea,
First of all i think that you should write yours etl file, in which you should put every mapping between the source meta-model and the target meta-model, after you could pass the model to etl engine and lastly you should be able to run yours transformations.

Eol is the common language among the Epsilon Languages, so it allows you to write something like an operation library.

The .launch file is used by ant to execute yours transformation, without write the java code

cheers
Daniele

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