[CAUSEWAY-3772] Sorting on a collection of view models, hitting hollow exception - ASF JIRA

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Details

Type: Bug
Status: Closed
Priority: Major
Resolution: Done
Affects Version/s: 2.0.0
Fix Version/s: 2.1.0, 3.1.0
Component/s: Viewer Wicket
Labels:
None

Description

InvoiceSummary is an entity

Its collection of getInvoices is a repository query:

@Collection
public List<InvoiceForLease> getInvoices()

{ return invoiceForLeaseRepository.find....(); }

Its collection "invoicesDocsFra" is derived, returning view model for each entity.

public class InvoiceSummary_invoiceDocsFra {

private final InvoiceSummary invoiceSummary;

public List<DocAndCommFra> coll()

{ return invoiceSummary.streamInvoices() .map(docAndCommFactory::instantiate) .collect(Collectors.toList()); }

}

the DocAndCommFra is a view model that wraps each invoice:

@Named(DocAndCommFra.LOGICAL_TYPE_NAMED)
@DomainObject(nature = Nature.VIEW_MODEL)
@DomainObjectLayout
@NoArgsConstructor
@AllArgsConstructor(access = AccessLevel.PACKAGE)
public final class DocAndCommFra {

public static final String LOGICAL_TYPE_NAMED = "outgoing.invoiceforlease.DocAndCommFra";

@Property
@PropertyLayout(sequence = "1")
@Getter @Setter
private InvoiceForLease invoice;

@Property
@PropertyLayout(sequence = "1.3")
public Lease getLease()

{ return getInvoice().getLease(); }

@Property()
@PropertyLayout(sequence = "1.4")
public CommunicationChannel getSendTo()

{ return getInvoice().getSendTo(); }

...

}

it's possible to sort the "docAndCommsFra" table on invoice, and on lease, but not on sendTo. Note that CommunicationChannel is abstract, subtypes are either EmailAddress or PostalAddress.

stacktrace-3772.txt