2. Such hearings shall be held only after a verified complaint specifying in detail the time, place and the nature of the acts complained of and the names of the persons alleged to have committed the same or participated therein have been served and after due and personal notice, in such manner as the court shall direct, has been given to all known persons against whom relief is sought and also to the public officers charged with the duty to protect the complainant's property. The hearing shall consist of the taking of testimony in open court with opportunity for cross-examination and testimony in opposition thereto, if offered, and no affidavits shall be received in support of any of the allegations of the complaint. Provided, however, that a court or a judge thereof may issue a restraining order without requiring a verified bill of particulars and only upon such notice as to the court or judge appears adequate to afford an opportunity to those who are to be affected by such restraining order to appear in opposition to the application therefor, if each of the following conditions is met:
(a) There is a labor dispute which directly and immediately involves:(i) The production on a farm of milk, fruits, berries, vegetables or other farm produce; or(ii) The shipment of any such product from the farm where it was produced; or(iii) The first storage of any such product after shipment from the farm where it was produced; or(iv) The first processing by canning or freezing of fruits, berries or vegetables; and(b) The plaintiff is a producer of such product; and(c) Such product is in a perishable condition; and(d) The verified complaint and other testimony submitted by the plaintiff, under oath, if sustained, would be sufficient not only to justify the court in issuing a temporary injunction upon a hearing after notice in accordance with the provisions of this section, but also to show that the plaintiff will be irreparably damaged unless a restraining order is issued; and(e) The court or judge, before issuing the restraining order, makes a decision to be filed in the record of the case in which he finds specifically that each of the facts called for by subdivision one above of this section has been established prima facie by the weight of the evidence submitted in support of the application for the restraining order and in opposition thereto. Any such restraining order shall be effective for no longer than five days and shall become void and not be subject to renewal at the expiration of said five days.