Ordered delivery of messages for various types of invocations in object-based systems

Distributed applications are realized by the cooperation of a group of multiple objects. In the group cooperation, an object multicasts a message and sends in parallel multiple kinds of messages to multiple destinations, i.e. parallel-cast in addition to unicasting messages. The object waits for multiple messages in a conjunctive and disjunctive way from multiple objects. We newly define a novel precedent relation of messages exchanged among objects in the presence of multicast and parallel-cast and conjunctive-receipt and disjunctive-receipt of messages.