Abstract: A mechanism is provided for consuming ordered streams of messages in a message oriented middleware having a single queue. The mechanism provides a first consuming application thread to process a first message, locks the first message when available on the queue to the first application thread and locking all subsequent messages on the queue with the same stream identifier as the first message to the first application thread, and identifies any messages with different stream identifiers currently locked to the first application thread, and making available the further messages to other application threads; delivering the first message. The mechanism also provides a second consuming application thread to process a subsequent message, locks a next unlocked message when available on the queue to the second consuming application, and locks all subsequent messages on the queue with the same stream identifier as the next unlocked message to the second consuming application thread.

Abstract: Method and system for cross enterprise communication are provided in which intermediary communication components carry out cross enterprise communication. A method at a first sending enterprise comprises: receiving a signed encrypted message from a sender within a first enterprise; validating the sender; decrypting the message; encrypting the message for receipt by a second enterprise; signing the encrypted message by the first enterprise; and sending the re-signed re-encrypted message to a second enterprise. The method at the second receiving enterprise comprises: receiving a signed encrypted message from a first enterprise; validating that the first enterprise is the sender; decrypting the message; encrypting the message for receipt by one or more recipients at the second enterprise; signing the encrypted message by the second enterprise indicating that the message is from the first enterprise; and sending the re-signed re-encrypted message to the one or more recipients of the second enterprise.