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Copying object properties [message #1288368]

Tue, 08 April 2014 13:59

Vlad Acretoaie

Messages: 95
Registered: April 2014

Member

In the following ETL rule the Source and Target models both conform to the OO.ecore metamodel found in org.eclipse.epsilon.examples.metamodels.

rule CopyAttribute
	transform source : Source!Attribute
	to target : Target!Attribute {
	
	target.name = source.name;
	target.visibility = source.visibility;
}

The "name" property is an instance of EString and is copied as expected. However, the "visibility" property is an instance of EEnumLiteral, and copying its value as shown above produces a ClassCastException. I don't understand why the two properties are treated differently.

I have also tried the following assignment:

target.visibility ::= source.visibility;

In this case, the value of target.visibility is always set to "public", regardless of the value of source.visibility.

In short, my question is: how can I copy the value of the "visibility" property to the target?

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