How to override a (corrupt) dynamic content model with a bootstrapped one?

As we transition to the new Hyland Community, some post links may be temporarily disrupted as we finalize redirects. We apologize for the inconvenience and are working to resolve this as quickly as possible. Details.

mathias_lin

A <strong>corrupt dynamic content model</strong> to Alfresco (5.0.d CE) was deployed and activated.

By corrupt I mean, the content model is not valid, because a wrong type has been used which does not exist. Something like:

<property name="my:name">
    <type>test</type>
</property>
‍‍‍‍‍

where "test" is obviously not valid - but the mistake in the model does not really matter here.

So, this content model was deployed dynamically to the

Repository > Data Dictionary > Models 
‍‍‍

and then unfortunately <strong>activated via Alfresco API call</strong> (and not via Share UI; since the Share UI usually checks if a model is valid before actually allowing to activate it).

This causes the Alfresco repository to not start anymore but fail with the error:

2016-01-19 18:17:11,780 ERROR [org.springframework.web.context.ContextLoader] [localhost-startStop-1] Context initialization failed
org.alfresco.service.namespace.NamespaceException: A namespace prefix is not registered for uri my.test.model
on booting up.
‍‍‍‍‍

My question is now, <strong>how to deactivate this corrupt model again</strong> without having access to the running Alfresco repository instance, this not able to access the Data Dictionary > Models folder anymore.

<strong>I already tried to deploy a customModel.xml and custom-model-context.xml with the same model name</strong> etc. inside to the /alfresco/tomcat/shared/classes/alfresco/extension folder, but this does not seem to override the dynamic model. When booting up Alfresco, I still get the error above.

Any ideas anybody? Thanks!

Just for reference, this is the customModel.xml file that I use to override the old one:

<?xml version="1.0" encoding="UTF-8"?>

<!– Custom Model –>

<!– Note: This model is pre-configured to load at startup of the Repository.  So, all custom –>
<!–       types and aspects added here will automatically be registered –>

<model name="my:testModel" xmlns="http://www.alfresco.org/model/dictionary/1.0">

   <!– Optional meta-data about the model –>
   <description>Custom Model</description>
   <author></author>
   <version>1.0</version>

   <imports>
      <!– Import Alfresco Dictionary Definitions –>
      <import uri="http://www.alfresco.org/model/dictionary/1.0" prefix="d"/>
      <!– Import Alfresco Content Domain Model Definitions –>
      <import uri="http://www.alfresco.org/model/content/1.0" prefix="cm"/>
   </imports>

   <!– Introduction of new namespaces defined by this model –>
   <!– NOTE: The following namespace custom.model should be changed to reflect your own namespace –>
   <namespaces>
      <namespace uri="my.test.model" prefix="my"/>
   </namespaces>

</model>
‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

<hr/>
<strong>UPDATE:</strong>
A useful answer has been provided on StackOverflow: http://stackoverflow.com/questions/34883278/alfresco-how-to-override-a-corrupt-dynamic-content-model-with-a-bootstrapped/34886741

mathias_lin

My solution for now was to delete parts of the /alf_data/contentstore/ (I roughly knew at what time the model has been deployed). Since it's all in .bin format, I'm not sure what other files I deleted as well, but it weren't too many 😉
Afterwards, Alfresco at least starts again.