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XML creation during ETL [message #1735558]

Tue, 21 June 2016 07:35

crothy donald

Messages: 31
Registered: September 2013

Member

Hi everyone,

in short, my usecase is:
-> source is EMF ecore model, XML resource
-> target is plain XML

My output (target) will be a XML file created by scratch. Inspired by the plain XML example, I start coding my transformation, but I didn't get to far...

My problems are:
1) I was not able to create the root xml node within the pre block
pre {
'Running EMF2XML transformation ...'.println();

XMLDoc.root := new t_library;
}

results in
Type 't_library' not found

2) How to specify new xml types within the rule declaration?

I am afraid, I cannot use ETL to generate XML documents from scratch. Can anybody confirm or deny? Any other examples, projects, documentation.

Best regards

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Re: XML creation during ETL [message #1735577 is a reply to message #1735558]

Tue, 21 June 2016 09:57

Dimitris Kolovos

Messages: 2162
Registered: July 2009
Location: York, UK

Senior Member

Hi,

Could you please share a minimal example we can use to reproduce this?

https://www.eclipse.org/epsilon/doc/articles/minimal-examples/

Cheers,
Dimitris

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Re: XML creation during ETL [message #1735605 is a reply to message #1735577]

Tue, 21 June 2016 12:12

crothy donald

Messages: 31
Registered: September 2013

Member

Hi Dimitris,

of course.
1) I took the Tree.ecore you provided with the Tree.xmi (TreeA->TreeB->TreeC) as input
2) Output will be a new XML, generated by scratch. My goal is to tranform any Tree instance within the Tree.xmi into a new XML Tag named "XMLTree"

Here the transformation, I try to generate a new XML Tag "xmlTree"

pre {
	'Running Tree2XML transformation ...'.println();

	XMLDoc.root := new t_XmlTree;
}

Here is the launch config:
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<launchConfiguration type="org.epsilon.etl.eclipse.dt.launching.EtlLaunchConfigurationDelegate">
<booleanAttribute key="fine_grained_profiling" value="false"/>
<listAttribute key="models">
<listEntry value="#Tue Jun 21 14:02:27 CEST 2016 isMetamodelFileBased=false name=Tree readOnLoad=true storeOnDisposal=false aliases= cached=true fileBasedMetamodelUri= metamodelUri=TreeDsl modelUri=platform\:/resource/udm.epsilon.transformation/models/Tree.xmi reuseUnmodifiedFileBasedMetamodels=true type=EMF modelFile=/udm.epsilon.transformation/models/Tree.xmi expand=true metamodelFile="/>
<listEntry value="#Tue Jun 21 14:03:18 CEST 2016 name=XMLDoc readOnLoad=false storeOnDisposal=true aliases= uri= cached=true file=/udm.epsilon.transformation/models/tree2xml.xml fileBased=true type=PlainXML"/>
</listAttribute>
<listAttribute key="parameters"/>
<booleanAttribute key="profile_model_loading" value="false"/>
<booleanAttribute key="profiling_enabled" value="false"/>
<booleanAttribute key="reset_profiler" value="false"/>
<stringAttribute key="source" value="/udm.epsilon.transformation/etl/tree2xml.etl"/>
</launchConfiguration>

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