Author: rsoika

In the latest version of the Imixs JSF Tools 2.0.2 we provide a new Controller Bean which allows managing file attachments and large binary objects (BLOB). The new contoller class is called BLOBWorkitemController.

This BLOBWorkitemController is used to store large objects into a single ItemCollection mapped to a EntityBean. The BlobWorkitem is always bounded to a parent workitem by its referrer id ($uniqueidRef). So an application can implement a lazy loading for BLOBWorkitems. The read- and write access settings of BLOBWorkitems are automatically synchronized to the settings of the parent workitem. So the security features of the Imixs Workflow controller are full supported. The Data of a BLOB WOrkitem can be accessed by an embedded Itemcollection which can be loaded and saved throgh the controller bean. This makes it really easy to manage file attachments inside a JSF application. See also more infos and examples on the Imixs JSF-Tools Project Homepage.

If you migrate form the ix-workflow project to the new Imixs Workflow project it is not possible to redeploy with the new JEE Implementation into an existing EJB / EAR module.

So I recommand to follow these steps:

1.   backup the entities form you existing Imixs Workflow Application with the new (!) org.imixs.workflow.jee.adminclient.web 1.4.3 using the Export Feature.
2. Take care about the new persistence unit used in the persistence.xml
   org.imixs.workflow.jee.jpa
3. Redeploy you new project with the persistence.xml option:
   <property name=”toplink.ddl-generation”
   value=”drop-and-create-tables” />
4. Reimport you backupfile with the new imixs WOrkflow AdminClient Tool