org.apache.isis.core.progmodel.facets.object.validate
Interface ValidateObjectFacet

All Superinterfaces:

org.apache.isis.core.metamodel.facetapi.Facet, org.apache.isis.core.metamodel.facetapi.FacetAbstract.Validating, org.apache.isis.core.metamodel.consent.InteractionAdvisor, org.apache.isis.core.metamodel.interactions.InteractionAdvisorFacet, org.apache.isis.core.metamodel.interactions.ValidatingInteractionAdvisor

All Known Implementing Classes:

ValidateObjectFacetAbstract, ValidateObjectFacetViaValidateMethod

public interface ValidateObjectFacet
extends org.apache.isis.core.metamodel.facetapi.Facet, org.apache.isis.core.metamodel.interactions.ValidatingInteractionAdvisor

Mechanism for determining whether this object is in a valid state, for example so that it can be persisted or updated.

Even though all the properties of an object may themselves be valid, there could be inter-property dependencies which are invalid. For example fromDate > toDate would probably represent an invalid state.

In the standard Apache Isis Programming Model, typically corresponds to the validate method.

See Also:

PersistingCallbackFacet, UpdatingCallbackFacet

Field Summary

Fields inherited from interface org.apache.isis.core.metamodel.interactions.InteractionAdvisorFacet

NOOP

Method Summary

String

invalidReason(org.apache.isis.core.metamodel.adapter.ObjectAdapter adapter) The reason the object is invalid.

Methods inherited from interface org.apache.isis.core.metamodel.interactions.ValidatingInteractionAdvisor

invalidates

Methods inherited from interface org.apache.isis.core.metamodel.facetapi.Facet

alwaysReplace, facetType, getFacetHolder, getUnderlyingFacet, isDerived, isNoop, setFacetHolder, setUnderlyingFacet

Method Detail

invalidReason

String invalidReason(org.apache.isis.core.metamodel.adapter.ObjectAdapter adapter)

The reason the object is invalid.

. If the object is actually valid, should return null.