apache/maven · error · DIException

Cyclic dependency detected: {}

Error message

Cyclic dependency detected: {}

What it means

Error "Cyclic dependency detected: {}" thrown in apache/maven.

Source

Thrown at impl/maven-di/src/main/java/org/apache/maven/di/impl/InjectorImpl.java:430

        @Override
        public Q get(int index) {
            return mapper.apply(delegate.get(index));
        }

        @Override
        public int size() {
            return delegate.size();
        }
    }

    private void checkCyclicDependency(Key<?> key) {
        Set<Key<?>> stack = resolutionStack.get();
        if (stack == null) {
            stack = new LinkedHashSet<>();
            resolutionStack.set(stack);
        }
        if (!stack.add(key)) {
            throw new DIException("Cyclic dependency detected: "
                    + stack.stream().map(Key::getDisplayString).collect(Collectors.joining(" -> "))
                    + " -> "
                    + key.getDisplayString());
        }
    }

    private void removeFromResolutionStack(Key<?> key) {
        Set<Key<?>> stack = resolutionStack.get();
        if (stack != null) {
            stack.remove(key);
            if (stack.isEmpty()) {
                resolutionStack.remove();
            }
        }
    }

    private static class SingletonScope implements Scope {
        Map<Key<?>, java.util.function.Supplier<?>> cache = new ConcurrentHashMap<>();

View on GitHub (pinned to e4093d4e12)

When it happens

Trigger: Thrown at impl/maven-di/src/main/java/org/apache/maven/di/impl/InjectorImpl.java:430 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/82dc305f8b46066b. Report an issue: GitHub.