apache/maven · error · DIException

More than one qualifier annotation on {}

Error message

More than one qualifier annotation on {}

What it means

Error "More than one qualifier annotation on {}" thrown in apache/maven.

Source

Thrown at impl/maven-di/src/main/java/org/apache/maven/di/impl/ReflectionUtils.java:87

            if (!field.isSynthetic() || !field.getName().startsWith("this$") || field.getType() != enclosingClass) {
                continue;
            }
            field.setAccessible(true);
            try {
                return field.get(innerClassInstance);
            } catch (IllegalAccessException e) {
                throw new RuntimeException(e);
            }
        }
        return null;
    }

    public static @Nullable Object qualifierOf(AnnotatedElement annotatedElement) {
        Object qualifier = null;
        for (Annotation annotation : annotatedElement.getDeclaredAnnotations()) {
            if (annotation.annotationType().isAnnotationPresent(Qualifier.class)) {
                if (qualifier != null) {
                    throw new DIException("More than one qualifier annotation on " + annotatedElement);
                }
                if (annotation instanceof Named named) {
                    qualifier = named.value();
                } else {
                    Class<? extends Annotation> annotationType = annotation.annotationType();
                    qualifier = annotationType.getDeclaredMethods().length == 0 ? annotationType : annotation;
                }
            }
        }
        return qualifier;
    }

    public static @Nullable Annotation scopeOf(AnnotatedElement annotatedElement) {
        Annotation scope = null;
        for (Annotation annotation : annotatedElement.getDeclaredAnnotations()) {
            if (annotation.annotationType().isAnnotationPresent(org.apache.maven.api.di.Scope.class)) {
                if (scope != null) {
                    throw new DIException("More than one scope annotation on " + annotatedElement);

View on GitHub (pinned to e4093d4e12)

When it happens

Trigger: Thrown at impl/maven-di/src/main/java/org/apache/maven/di/impl/ReflectionUtils.java:87 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of apache/maven@e4093d4e12 (2026-08-21). Data as JSON: /api/errors/1b406d1bac1586ba. Report an issue: GitHub.