Annotation processor fails in Eclipse when evaluating custom constraints not defined in the current project

Description

In certain situations the AP fails when being integrated in Eclipse with the following exception:

java.lang.AssertionError: Class org.hibernate.validator.constraints.impl.LengthValidator specified in @Constraint.validatedBy doesn't implement ConstraintValidator.
at org.hibernate.validator.ap.util.ConstraintHelper.getConstraintValidatorSuperType(ConstraintHelper.java:497)
at org.hibernate.validator.ap.util.ConstraintHelper.getSupportedType(ConstraintHelper.java:426)
at org.hibernate.validator.ap.util.ConstraintHelper.getSupportedTypes(ConstraintHelper.java:402)
at org.hibernate.validator.ap.util.ConstraintHelper.checkCustomConstraint(ConstraintHelper.java:356)
at org.hibernate.validator.ap.util.ConstraintHelper.checkConstraint(ConstraintHelper.java:295)
at org.hibernate.validator.ap.ConstraintAnnotationVisitor.checkConstraintAtField(ConstraintAnnotationVisitor.java:290)
at org.hibernate.validator.ap.ConstraintAnnotationVisitor.visitVariableAsField(ConstraintAnnotationVisitor.java:174)
at org.hibernate.validator.ap.ConstraintAnnotationVisitor.visitVariableAsField(ConstraintAnnotationVisitor.java:45)
at javax.lang.model.util.ElementKindVisitor6.visitVariable(ElementKindVisitor6.java:199)
at org.eclipse.jdt.internal.compiler.apt.model.VariableElementImpl.accept(VariableElementImpl.java:55)
at org.hibernate.validator.ap.ConstraintValidationProcessor.process(ConstraintValidationProcessor.java:84)
at org.eclipse.jdt.internal.compiler.apt.dispatch.RoundDispatcher.handleProcessor(RoundDispatcher.java:139)
at org.eclipse.jdt.internal.compiler.apt.dispatch.RoundDispatcher.round(RoundDispatcher.java:121)
at org.eclipse.jdt.internal.compiler.apt.dispatch.BaseAnnotationProcessorManager.processAnnotations(BaseAnnotationProcessorManager.java:159)
at org.eclipse.jdt.internal.apt.pluggable.core.dispatch.IdeAnnotationProcessorManager.processAnnotations(IdeAnnotationProcessorManager.java:134)
at org.eclipse.jdt.internal.compiler.Compiler.processAnnotations(Compiler.java:810)
at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:428)
at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:364)
at org.eclipse.jdt.internal.core.builder.IncrementalImageBuilder.compile(IncrementalImageBuilder.java:321)
at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:301)
at org.eclipse.jdt.internal.core.builder.IncrementalImageBuilder.build(IncrementalImageBuilder.java:134)
at org.eclipse.jdt.internal.core.builder.JavaBuilder.buildDeltas(JavaBuilder.java:265)
at org.eclipse.jdt.internal.core.builder.JavaBuilder.build(JavaBuilder.java:193)
at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:627)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:170)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:201)
at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:253)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:256)
at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:309)
at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:341)
at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:140)
at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:238)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)

This happens, if the AP examines a constraint annotation, which is not defined in the currently built project itself, but is imported from some other JAR (e.g. @Length from HV):

public class TestModel {

@Length
private String test;
}

The problem occurs, regardless whether the JAR containing the constraint is on the AP classpath or not.

The AP works as expected when running on javac.

Environment

None

Status

Assignee

Gunnar Morling

Reporter

Gunnar Morling

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Fix versions

Affects versions

4.1.0.Beta1

Priority

Major
Configure