summary

Cross-parameter constraint is disallowed by Annotation Processor

Description

I am using hibernate validator 5.0.3 with Java 1.6.0_45-b06-451 on OSX 10.9.1.

I have created a cross-parameter constraint as follows:

CrossParameterConstraint.java

@Target({ANNOTATION_TYPE, METHOD, CONSTRUCTOR})
@Retention(RUNTIME)
@Constraint(validatedBy = {CrossParameterConstraintValidator.class})
@Documented
public @interface CrossParameterConstraint {

    String message() default "{CrossParameterConstraint.message}";

    Class<?>[] groups() default {};

    Class<? extends Payload>[] payload() default {};

}

CrossParameterConstraintValidator.java

@SupportedValidationTarget(ValidationTarget.PARAMETERS)
public class CrossParameterConstraintValidator implements
        CrossParameterConstraintValidator<CrossParameterConstraint, Object[]> {

    @Override
    public void initialize(final CrossParameterConstraint constraintAnnotation) {
    }

    @Override
    public boolean isValid(final Object[] value, final ConstraintValidatorContext context) {
        // some validation logic
        return true;
    }

}

The above constraint is used in a method as follows:

CrossParameterConstraintUsageExample.java

public class CrossParameterConstraintUsageExample {
    @CrossParameterConstraint
    public String test(Integer parameter, String anotherParameter) {
        return parameter + anotherParameter;
    }
}

I have configured the Annotation Processor in pom.xml
as follows:

pom.xml

<dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator-annotation-processor</artifactId>
            <version>5.0.3.Final</version>
        </dependency>

When trying to compile, the Annotation Processor reports the following error:

The annotation @CrossParameterConstraint is disallowed for the return type of this method.