[CAUSEWAY-1550] Remove metamodel validation that insists on at least one @PersistenceCapable class.

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.13.1
• Fix Version/s: 1.13.2
• Component/s: Core
• Assignee: Daniel Keir Haywood
• Reporter: Daniel Keir Haywood
• Created: 30/Nov/16 19:07
• Updated: 14/Dec/16 08:10
• Resolved: 30/Nov/16 22:50

Description

As per JdoMetaModelValidator:

                if(!found) {
                    validationFailures.add("No @PersistenceCapable entities found. " +
                            "(Are the entities referenced by the registered services? " + 
                            "are all services registered? " + 
                            "did the DataNucleus enhancer run?)");
                }

because it's perfectly valid to have an Isis app with no persisted entities, just view models.