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Apache Axis2 Web Services Second Edition by Afkham Azeez, Deepal Jayasinghe

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Flow

Flow is simply a collection of phases, and the order of phases inside a flow is defined in axis2.xml. As a phase is a logical collection and, which is, in fact, a virtual concept, a flow can be assumed as the execution chain (a collection of handlers). There are four types of flows in Axis2:

  • InFlow: When a message comes in (request message), the message has to go via the InFlow. Then all the handlers in the InFlow will be invoked. InFlow is somewhat different from the OutFlow. A flow consists of two parts. The first part is from the beginning to the dispatcher (up to and including the dispatch phase). The second part will be there only if a corresponding service is found at the end of the dispatch phase. Therefore, the second part of the ...

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