org.apache.polygene.api.constraint

Interface Constraint<ANNOTATION extends Annotation,TYPE>

All Known Implementing Classes:

AlarmNameFormat.AlarmNameConstraint, ContainsConstraint, EntityName.Constraint, GreaterThanConstraint, HostPortConstraint, HostPortListConstraint, InstanceOfConstraint, LessThanConstraint, MatchesConstraint, MaxLengthConstraint, MinLengthConstraint, NotEmptyCollectionConstraint, NotEmptyStringConstraint, OneOfConstraint, RangeConstraint, Requires.RequiresRoleConstraint, RequiresValid.RequiresValidConstraint, URIConstraint, URLConstraint

public interface Constraint<ANNOTATION extends Annotation,TYPE>

All Constraints must implement this interface, which is used for each value validation.

Method Summary

Modifier and Type	Method and Description
boolean	isValid(ANNOTATION annotation, TYPE value) For each value or parameter which should be checked this method will be invoked.

Method Detail

isValid

boolean isValid(ANNOTATION annotation,
                TYPE value)

For each value or parameter which should be checked this method will be invoked. If the method returns true the value is valid. If it returns false the value is considered invalid. When all constraints have been checked a ConstraintViolationException will be thrown with all the constraint violations that were found.

Parameters:

annotation - the annotation to match

value - the value to be checked

Returns:

true if valid, false if invalid