org.apache.isis.core.progmodel.facets.properties.validate
Interface PropertyValidateFacet

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:

PropertyValidateFacetAbstract, PropertyValidateFacetDefault, PropertyValidateFacetNone, PropertyValidateFacetViaMethod

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

The mechanism by which the proposed value of a property can be validated, called immediately before setting the value.

In the standard Apache Isis Programming Model, corresponds to invoking the validateXxx method for a property with an accessor of getXxx.

See Also:

PropertySetterFacet

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 targetObject, org.apache.isis.core.metamodel.adapter.ObjectAdapter proposedValue) The reason why the proposed value 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 targetObject,
                     org.apache.isis.core.metamodel.adapter.ObjectAdapter proposedValue)

The reason why the proposed value is invalid.

Should return null if the value is in fact valid.