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When bootstrapping Hibernate Validator, ConfigurationImpl's constructor is called which contains:
{code}
if ( isJavaFxInClasspath() ) {
validatedValueHandlers.add( new JavaFXPropertyValueUnwrapper( typeResolutionHelper ) );
}
{code}
The classloading mechanism used to implement method {{ isJavaFxInClasspath() }} is inconsistent with that used in {{ JavaFXPropertyValueUnwrapper 's }} constructor.
{{ isJavaFxInClasspath }} uses the {{ LoadClass }} util to check if the class " {{ javafx.application.Application " }} exists. When this util fails to load the class through {{ Class.forName }} it falls back to the Thread Context ThreadContext ClassLoader.
{{ JavaFXPropertyValueUnwrapper }} is a generic class parameterized with " {{ javafx.beans.value.ObservableValue " }} . Its superclass constructor in {{ TypeResolverBasedValueUnwrapper }} indirectly tries to load the {{ ObservableValue }} class when resolving it's subclass type through classmate's {{ TypeResolver }} . However, this does NOT fallback to the context class loader.
I have an Eclipse-based OSGi application that worked fine with Hibernate Validator 5.0.2.Final but fails bootstrapping Hibernate Validator with 5.2.1.Final due to this. I am not using javafx which means that the normal classloader cannot load javafx classes. Somehow the TCCL that Eclipse uses can load them leading to
{noformat}
ClassNotFoundException: javafx.beans.value.ObservableValue.
{noformat}
A workaround for me is to temporarily set the TCCL to null or to the normal classloader.
Expected behavior would be for Hibernate Validator to should either successfully create the {{ JavaFXPropertyValueUnwrapper }} or skip it , but not throw an exception
when the TCCL differs from the normal classloader.
The exception I get:
{code}
Caused by: javax.validation.ValidationException: Unable to instantiate Configuration.
at javax.validation.Validation$GenericBootstrapImpl.configure(Validation.java:279)
at nl.hm.olga.validation.ValidatorFactoryFactory.create(ValidatorFactoryFactory.java:59)
at nl.hm.olga.validation.ValidationUtil.<clinit>(ValidationUtil.java:58)
... 86 more
Caused by: java.lang.TypeNotPresentException: Type javafx.beans.value.ObservableValue not present
at sun.reflect.generics.factory.CoreReflectionFactory.makeNamedType(CoreReflectionFactory.java:117)
at sun.reflect.generics.visitor.Reifier.visitClassTypeSignature(Reifier.java:125)
at sun.reflect.generics.tree.ClassTypeSignature.accept(ClassTypeSignature.java:49)
at sun.reflect.generics.visitor.Reifier.reifyTypeArguments(Reifier.java:68)
at sun.reflect.generics.visitor.Reifier.visitClassTypeSignature(Reifier.java:138)
at sun.reflect.generics.tree.ClassTypeSignature.accept(ClassTypeSignature.java:49)
at sun.reflect.generics.repository.ClassRepository.getSuperclass(ClassRepository.java:87)
at java.lang.Class.getGenericSuperclass(Class.java:777)
at com.fasterxml.classmate.TypeResolver._resolveSuperClass(TypeResolver.java:424)
at com.fasterxml.classmate.TypeResolver._constructType(TypeResolver.java:395)
at com.fasterxml.classmate.TypeResolver._fromClass(TypeResolver.java:351)
at com.fasterxml.classmate.TypeResolver.resolve(TypeResolver.java:111)
at org.hibernate.validator.internal.engine.valuehandling.TypeResolverBasedValueUnwrapper.resolveSingleTypeParameter(TypeResolverBasedValueUnwrapper.java:41)
at org.hibernate.validator.internal.engine.valuehandling.TypeResolverBasedValueUnwrapper.<init>(TypeResolverBasedValueUnwrapper.java:29)
at org.hibernate.validator.internal.engine.valuehandling.JavaFXPropertyValueUnwrapper.<init>(JavaFXPropertyValueUnwrapper.java:23)
at org.hibernate.validator.internal.engine.ConfigurationImpl.<init>(ConfigurationImpl.java:117)
at org.hibernate.validator.internal.engine.ConfigurationImpl.<init>(ConfigurationImpl.java:95)
at org.hibernate.validator.HibernateValidator.createGenericConfiguration(HibernateValidator.java:31)
at javax.validation.Validation$GenericBootstrapImpl.configure(Validation.java:276)
... 88 more
Caused by: java.lang.ClassNotFoundException: javafx.beans.value.ObservableValue
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:513)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:429)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:417)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at sun.reflect.generics.factory.CoreReflectionFactory.makeNamedType(CoreReflectionFactory.java:114)
... 106 more
{code}
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