[CAUSEWAY-1311] Mixins for Persistable metadata causes exception when rendering.

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.11.1
• Fix Version/s: 1.12.0
• Component/s: Core
• Assignee: Daniel Keir Haywood
• Reporter: Daniel Keir Haywood
• Created: 20/Feb/16 11:36
• Updated: 12/Apr/16 07:18
• Resolved: 08/Mar/16 06:26

Description

one (or both) of these causes issue (this in the github.com/incodehq/contactapp)

@Mixin
public class Persistable_id {

    private final Persistable persistable;

    public Persistable_id(Persistable persistable) {
        this.persistable = persistable;
    }

    @MemberOrder(name = "Metadata", sequence = "1")
    @Action(semantics = SemanticsOf.SAFE)
    @ActionLayout(contributed = Contributed.AS_ASSOCIATION)
    @PropertyLayout()
    public Object $$() {
        final Object objectId = JDOHelper.getObjectId(persistable);
        if(objectId instanceof DatastoreId) {
            final DatastoreId datastoreId = (DatastoreId) objectId;
            return datastoreId.getKeyAsObject();
        }
        return null;
    }

    public boolean hide$$() {
        return $$() == null;
    }


}

and/or

@Mixin .. 
public class Persistable_version {

    private final Persistable persistable;

    public Persistable_version(Persistable persistable) {
        this.persistable = persistable;
    }

    @MemberOrder(name = "Metadata", sequence = "2")
    @Action(semantics = SemanticsOf.SAFE)
    @ActionLayout(contributed = Contributed.AS_ASSOCIATION)
    @PropertyLayout()
    public Object $$() {
        return JDOHelper.getVersion(persistable);
    }
    public boolean hide$$() {
        return $$() == null;
    }

}