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

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Phase

The concept of a phase is introduced by Axis2 and it was mainly to support the dynamic ordering of handlers to provide better extensibility, and better flexibility of the handler chain. A phase can be defined in various ways:

  • It can be considered as a logical collection of handlers
  • It can be considered as a specific time interval in the message execution
  • It can be considered as a bucket into which one can put his/her handler
  • One can consider a phase as a handler too

There is another term called flow (pipe). A flow is the message pipe where the message enters from one end of the flow and leaves from the other end of the flow. A flow or execution chain can be considered as a collection of phases. Although it has been mentioned earlier that the ...

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