proxy breaks SQLExtractor

[ymajoros]

SQLExtractor.from(TypedQuery) didn't work from some of my use cases: for some reason, I got a proxy for my TypedQuery instance, which isn't assignable from QuerySqmImpl.

I could solve it with following workaround:

private Query getHibernateQuery(TypedQuery<?> typedQuery) {
    try {
        if (typedQuery instanceof QuerySqmImpl) {
            return typedQuery;
        }
        // is proxyied, get it out
        InvocationHandler invocationHandler = Proxy.getInvocationHandler(typedQuery);
        Class<?> innerClass = invocationHandler.getClass();
        Field targetField = innerClass.getDeclaredField("target");
        targetField.setAccessible(true);
        return (Query) targetField.get(invocationHandler);
    } catch (NoSuchFieldException | IllegalAccessException exception) {
        throw new RuntimeException(exception);
    }
}

I suggest including it in SQLExtractor.

[vladmihalcea]

Thanks for the suggestion. You can send a Pull Request with your proposal.

[ymajoros]

This pull request also solves this: #675