Method isVersion4

src/jrd/cvt.cpp:614–622

void EngineCallbacks::isVersion4(bool& v4)
{
	thread_db* tdbb = JRD_get_thread_data();

	if (tdbb && (tdbb->getType() == ThreadData::tddDBB) && tdbb->getRequest())
	{
		v4 = (tdbb->getRequest()->getStatement()->blrVersion == 4);
	}
}