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Nuno Macedo edited this page Feb 28, 2014
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When creating a dynamic XMI instance in Eclipse from an Ecore resource, its schemaLocation is assigned with a relative path. Echo requires that an absolute path (starting in the workspace) is assigned to schemaLocation.
When generating a new model, Echo needs to choose the type of its root element. To do so, Echo searches for a non-abstract root of the containment tree entailed by the meta-model. If no such class is found, an error is thrown. Note that this does not apply at repair commands because the root of the original model is used.