Converting projects from EJB 1.1 to EJB 2.x

An EJB 1.1 project can be converted to an EJB 2.x project using the J2EE Migration Wizard.

About this task

  • In the Java EE view, right-click on the 1.1 project, and then select Java EE > Specifications Upgrade Wizard.

Or, if you want to preserve the original EJB 1.1 project, you can create a new 2.x project and then import the existing project JAR file into it (File > Import > EJB JAR).

Although the project is an EJB 2.x project, the existing (or imported) EJB 1.1 container-managed persistence (CMP) entity beans remain EJB 1.1 beans. That is, the CMP entity beans are not converted to EJB 2.x.

The J2EE Migration wizard migrates the enterprise beans within an EJB 2.x project from 1.1 into 2.x. (If you choose to migrate your 1.1 CMP entity beans to 2.x, all beans in the 2.x project must be migrated. However, you can selectively choose to add local client views to these migrated 2.x beans.)
  • The wizard maintains the existing EJB 1.1 inheritance in the EJB 2.x project.
  • The wizard maintains EJB 1.1 (proprietary) relationships into EJB 2.x (standard) relationships, plus other benefits.
Note: If you have any mapped associations, EJB 2.x associations are created for the associations themselves, but the role maps for those associations become invalid. If you run validation, you see an error occur. To get around this, open the mapping editor first and save the map. The role maps are removed. You may then run validation again and remap the roles.

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