org.nakedobjects.metamodel.facets.actions.validate
Interface ActionValidationFacet

All Superinterfaces:

Facet, InteractionAdvisor, InteractionAdvisorFacet, ValidatingInteractionAdvisor

All Known Implementing Classes:

ActionValidationFacetAbstract, ActionValidationFacetViaMethod

public interface ActionValidationFacet
extends Facet, ValidatingInteractionAdvisor

The mechanism by which the set of parameters of the action can be validated before the action itself is invoked.

In the standard Naked Objects Programming Model, corresponds to invoking the validateXxx support method for an action.

Note that the parameters may be validated independently first (eg a range check on a numeric parameter).

See Also:

ActionInvocationFacet

Field Summary

Fields inherited from interface org.nakedobjects.metamodel.consent.InteractionAdvisorFacet

NOOP

Method Summary

java.lang.String

invalidReason(NakedObject target, NakedObject[] arguments) Reason why the validation has failed, or null if okay.

Methods inherited from interface org.nakedobjects.metamodel.interactions.ValidatingInteractionAdvisor

invalidates

Methods inherited from interface org.nakedobjects.metamodel.facets.Facet

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

Method Detail

invalidReason

java.lang.String invalidReason(NakedObject target,
                               NakedObject[] arguments)

Reason why the validation has failed, or null if okay.