Disclosure order should not have been made prior to determination of court’s jurisdiction

Clarke J (nem diss): Jurisdiction of court - action by airline against operator of price comparison website - application by defendant to challenge jurisdiction of Irish courts - whether contractual relationship between parties - application by plaintiff for disclosure of identity third party providers of information - one such party (Ypsilon) joined as co-defendant to proceedings - appeal of disclosure order - appeal of order joining co-defendant - High Court finding of prima facie "wrongful activity" on part of defendant - whether such orders could be made pending resolution of jurisdictional issues - Brussels regulation - status of proceedings - whether disclosure application brought to assist in determining question of jurisdiction - whether court could determine jurisdiction without having to consider substance of the case - underlying jurisdiction to direct disclosure - whether order could have been made under Article 31 of Brussels Convention - whether joinder of co-defendant was in breach of fair procedures.