public ContainerElementKey runtimeKey()

in bval-jsr/src/main/java/org/apache/bval/jsr/GraphContext.java [121:150]

27 lines of code
6 McCabe index (conditional complexity)


    public ContainerElementKey runtimeKey(ContainerElementKey key) {
        if (value != null) {
            final Class<?> containerClass = key.getContainerClass();
            final Class<? extends Object> runtimeType = value.getClass();
            if (!runtimeType.equals(containerClass)) {
                Exceptions.raiseUnless(containerClass.isAssignableFrom(runtimeType), ValidationException::new,
                    "Value %s is not assignment-compatible with %s", value, containerClass);

                if (key.getTypeArgumentIndex() == null) {
                    return new ContainerElementKey(runtimeType, null);
                }
                final Map<TypeVariable<?>, Type> typeArguments =
                    TypeUtils.getTypeArguments(runtimeType, containerClass);

                Type type =
                    typeArguments.get(containerClass.getTypeParameters()[key.getTypeArgumentIndex().intValue()]);

                while (type instanceof TypeVariable<?>) {
                    final TypeVariable<?> var = (TypeVariable<?>) type;
                    final Type nextType = typeArguments.get(var);
                    if (nextType instanceof TypeVariable<?>) {
                        type = nextType;
                    } else {
                        return ContainerElementKey.forTypeVariable(var);
                    }
                }
            }
        }
        return key;
    }