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JsonNullable with Collection is broken #49

@MelleD

Description

@MelleD

With the version >0.25 the Collection handling is broken.

When you use for example JsonNullable<Set> the extractor (JsonNullableValueExtractorHelper) throws a error.

Caused by: java.lang.ClassCastException: class java.lang.Long cannot be cast to class java.util.Collection (java.lang.Long and java.util.Collection are in module java.base of loader 'bootstrap')
	at org.hibernate.validator.internal.constraintvalidators.bv.size.SizeValidatorForCollection.isValid(SizeValidatorForCollection.java:23)
	at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.validateSingleConstraint(ConstraintTree.java:180)
	... 156 more

javax.validation.ValidationException: HV000028: Unexpected exception during isValid call.
	at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.validateSingleConstraint(ConstraintTree.java:186)
	at org.hibernate.validator.internal.engine.constraintvalidation.SimpleConstraintTree.validateConstraints(SimpleConstraintTree.java:62)
	at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.validateConstraints(ConstraintTree.java:75)
	at org.hibernate.validator.internal.metadata.core.MetaConstraint.doValidateConstraint(MetaConstraint.java:130)
	at org.hibernate.validator.internal.metadata.core.MetaConstraint.access$100(MetaConstraint.java:39)
	at org.hibernate.validator.internal.metadata.core.MetaConstraint$TypeParameterValueReceiver.doValidate(MetaConstraint.java:246)
	at org.hibernate.validator.internal.metadata.core.MetaConstraint$TypeParameterValueReceiver.indexedValue(MetaConstraint.java:212)
	at org.openapitools.jackson.nullable.JsonNullableValueExtractorHelper.extractValues(JsonNullableValueExtractorHelper.java:13)
	at org.openapitools.jackson.nullable.JsonNullableValueExtractor.extractValues(JsonNullableValueExtractor.java:14)
	at org.openapitools.jackson.nullable.JsonNullableValueExtractor.extractValues(JsonNullableValueExtractor.java:10)
	at org.hibernate.validator.internal.engine.valueextraction.ValueExtractorHelper.extractValues(ValueExtractorHelper.java:42)
	at org.hibernate.validator.internal.metadata.core.MetaConstraint.validateConstraint(MetaConstraint.java:117)
	at org.hibernate.validator.internal.engine.ValidatorImpl.validateMetaConstraint(ValidatorImpl.java:555)
	at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForSingleDefaultGroupElement(ValidatorImpl.java:518)
	at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForDefaultGroup(ValidatorImpl.java:488)
	at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForCurrentGroup(ValidatorImpl.java:450)
	at org.hibernate.validator.internal.engine.ValidatorImpl.validateInContext(ValidatorImpl.java:400)
	at org.hibernate.validator.internal.engine.ValidatorImpl.validate(ValidatorImpl.java:172)
	at org.springframework.validation.beanvalidation.SpringValidatorAdapter.validate(SpringValidatorAdapter.java:109)

Example:


  @JsonProperty("groups")
  @Valid
  private JsonNullable<Set<Long>> groups = JsonNullable.undefined();

@tofi86 Think it is related to you change JsonNullable handling

EDIT: Ok i see there is a longer message, but no solution.
#35

But currently this crashes the open api generator with spring boot.

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