[ https://issues.jboss.org/browse/WFCORE-155?page=com.atlassian.jira.plugin... ] ehsavoie Hugonnet commented on WFCORE-155: ------------------------------------------ Currently we have a lot of registries (*GlobalTransformerRegistry*) which will be organized as a tree of registries the address(of the resource or of the operation) will lead to the *TransformationDescription*(s) to be applied. The 'entry' point is the *TransformerRegistry* which contains the subsystems registry and the domain registry. When a HC connects to the DC it sends a list of all the subsystems it uses and their versions. For each subsystem/version we will get a registry that will contains all the transformations from the current version of the DC to the HC version. A slight difference exists when we reach a *ChainedTransformingDescription* because it then takes place of the registry to resolve the subparts. So if the DC is running on 2.0.0 and the HC is on 1.1.0 when the HC registers : a *TransformationTarget* is created with only a 'filtered' registry containing the a registry with the transformation description for each subsystem according to its version. So if we have a subsystem with an unregistered version we need to manage it in this processing aka *GlobalTransformerRegistry.process(final OperationTransformerRegistry registry, final PathAddress address, final ModelVersion version, Map<PathAddress, ModelVersion> versions)* (around line 170) then we need to check that the unregistered version is not used anymore. -- This message was sent by Atlassian JIRA (v6.3.15#6346)