What is the test for having a copy of an opinion of the appeal court of appeal regarding a final judgment in a personal injury case?

At the trial there was received into evidence the file of the first action, which included the exhibits, pleadings, judgment and a copy of the opinion of the district court of appeal. It has been held that, 'When a former judgment is properly pleaded in a complaint, such judgment may be considered by the trial court in determining whether it is res judicata of a plaintiff's alleged cause of action' and, '* * * it is the general rule that a final judgment is res judicata of the issues involved therein where the trial court had jurisdiction.' Weil v. Barthel, 45 Cal.2d 835, 837, 291 P.2d 30, 31.