Hi, I tried to find out where the Role of a MessageExchange is being set. I got stuck with the following, and was hoping that someone might help me out with clarifying the issue(s).
1.) States of MEs ================== A MessageExchange (ME) has an array of possible states (int [][]states), which differs depending on the type of the ME. It is only being set in the constructor of MessageExchangeImpl. When being sent, the method: > public void handleSend(boolean sync) throws MessagingException < changes the state depending on the current status/logical state of the ME by consulting and reassigning the current state. Every row of the array corresponds to a description of a state with all possible succeeding states - depending on the value of the ExchangeStatus and whether there is a Fault a new state is selected. The array of states determines the role of a MessageExchange. A Role.PROVIDER indicates that an ME is being sent from a consumer to a provider, whereas a Role.CONSUMER means that the ME goes from the provider to the consumer. *) Correct? 2.) Duplicity of MessageExchange instances =========================================== What I didn't get is that from "JBI Components: Part 1 (Theory)" I concluded that all messages related to ONE interaction between a Consumer and a Provider go through the same MessageExchange instance/MessageInstanceImpl object. **) However, in the code, it seems that the STATES_PROVIDER states are only assigned to a _new_ instance - while copying the ExchangePacket and assigning the ME from which it was copied as mirror. Correct? Why? 3.) Documenting the above and SM JavaDoc ========================================= Where in the SM pages/documentation would be the best place to contribute findings/investigations such as the above? Also, which one is the official SM JavaDoc: http://incubator.apache.org/servicemix/maven/... or http://servicemix.goopen.org/maven/... or http://XXX/...? Thanks in advance, Ciao, Philipp Rossmanith *) From DefaultBroker.java: // If we found a destination, or this is a reply if (exchange.getEndpoint() != null || exchange.getRole() == Role.CONSUMER) **) "This serves as a container for the messages and state of a service invocation (i.e., "calling" a particular operation). There are separate MessageExchange subtypes for each supported MEP. New message exchange instances are created using a JBI-provided MessageExchangeFactory." ITC Analyst Systems Integration T-Systems ITC Iberia S.A.U. Edifici 22@ Sancho d'Àvila 110-130 08018 Barcelona Office: + 34 93 501 56 22 Main: + 34 93 501 50 00 Email: [EMAIL PROTECTED] Internet: www.t-systems.com This e-mail may contain confidential or privileged information. Any unauthorised copying, use or distribution of this information is strictly prohibited.
