Error when hot-reloading a model bundle

[nicolas-rempulski]

When Wisdom hot-reload a bundle containing models, an error arise :

java.lang.ClassCastException: io.gruul.server.mainframe.model.Message_$$_jvstc0c_3 cannot be cast to javassist.util.proxy.Proxy

I've to cut wisdom:run and relaunch it.

On hot-reload, the OrientDBCrudProvider detect new models :

[INFO]   o.w.o.r.OrientDbCrudProvider {monitor-application} - OrientDB Database configuration found for /io/gruul/server/mainframe/model : {user=admin, url=remote:localhost/gruul, package=io.gruul.server.mainframe.model, name=dev} 

Imo it leads to a double declaration of the model class in the proxy, thus the class cast exception.

[cescoffier]

Which bundle is providing javassist ? Be sure your entity bundle does not
include it.

Sent from my iPhone

On 8 sept. 2014, at 15:25, Nicolas Rempulski [email protected]
wrote:

When Wisdom hot-reload a bundle containing models, an error arise :

java.lang.ClassCastException:
io.gruul.server.mainframe.model.Message_$$_jvstc0c_3 cannot be cast to
javassist.util.proxy.Proxy

I've to cut wisdom:run and relaunch it.

On hot-reload, the OrientDBCrudProvider detect new models :

[INFO] o.w.o.r.OrientDbCrudProvider {monitor-application} - OrientDB
Database configuration found for /io/gruul/server/mainframe/model :
{user=admin, url=remote:localhost/gruul,
package=io.gruul.server.mainframe.model, name=dev}

Imo it leads to a double declaration of the model class in the proxy, thus
the class cast exception.

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#9.

[nicolas-rempulski]

My osgi.bnd is exporting javassist.* indeed.

But if I don't do this :

java.lang.RuntimeException: by java.lang.NoClassDefFoundError: javassist/util/proxy/ProxyObject
[...]
java.lang.NoClassDefFoundError: javassist/util/proxy/ProxyObject
[...]
java.lang.ClassNotFoundException: javassist.util.proxy.ProxyObject not found 

[cescoffier]

It needs to be imported, but neither exported, nor included

On 8 septembre 2014 at 16:07:19, Nicolas Rempulski ([email protected]) wrote:

My osgi.bnd is exporting javassist.* indeed.

But if I don't do this :

java.lang.RuntimeException: by java.lang.NoClassDefFoundError: javassist/util/proxy/ProxyObject
[...]
java.lang.NoClassDefFoundError: javassist/util/proxy/ProxyObject
[...]
java.lang.ClassNotFoundException: javassist.util.proxy.ProxyObject not found
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[nicolas-rempulski]

Ok I removed my osgi.bnd, and forced a use of javassist in my code

Proxy.class.toString();

and it works OK (launch & hot-reload)

[cescoffier]

Yes, this is a hack. We should probably provide a way to ‘add this import’ automatically.

On 8 septembre 2014 at 16:30:56, Nicolas Rempulski ([email protected]) wrote:

Ok I removed my osgi.bnd, and forced a use of javassist in my code

Proxy.class.toString();
and it works OK (launch & hot-reload)

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[barjo]

Yes, it's a bit dirty. It's what I use in the sample too. It's a bit tricky to add it automatically to the project that use the orientdbCrud.

[cescoffier]

It could be added using a plugin made for orientdb.

Sent from my iPhone

On 8 sept. 2014, at 17:19, Jonathan Bardin [email protected] wrote:

Yes, it's a bit dirty. It's what I use in the sample too. It's a bit tricky
to add it automatically to the project that use the orientdbCrud.

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#9 (comment)
.

[barjo]

It would definitively be the best way, but it does sound a bit overkill :-? The good part is that we could have more use for a plugin down the road. (such has evolution management 😉 )