Empty resource.contents after autoload

[AnNeub]

This issue occur if a autoloaded resource is accessed via get_resource again. The problem occur in the function _update_container where the value is removed from contents. If accessing the same resource again, the resource is already loaded but has no contents.

I resolve this issue by adding the following lines to get_resource

        if uri.normalize() in self.resources:
            resource = self.resources[uri.normalize()]
            if resource.contents:
                return self.resources[uri.normalize()]
        else:
            # If not, we create a new resource
            resource = self.create_resource(uri)

See the stack trace below, when that happens. The line numbers may be not 100% correct.

_try_resource_autoload, resource.py:464
_get_href_decoder, resource.py:453
resolve_object, resource.py:400
__getattribute__, ecore.py:1018
_update_container, valuecontainer.py:78
add, valuecontainer.py:346

[aranega]

Hi again @AnNeub,

Thanks again for the issue, I'll check that asap. So the scenario is that there is an external resource that is automatically loaded (let say there is A.xmi that's loads objects from B.xmi) and when you access again the loaded resource from the resource set (so accessing B.xmi from the resource set) the content of this model is empty. That's it?

[AnNeub]

Thats correct

[aranega]

Hi @AnNeub

Sorry for the late answer... I started to try to reproduce your issue, but I cannot, mainly because I think the issue you have is directly related to the issue you raised in #113 (having the container object in a resource and the contained elements in another). I need to investigate further how EMF/Java reacts in those way, i.e, what will the contained object will answer if I ask who's its parent and which is its resource, to be compliant with that.