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Mohammad Zand

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  • راهنمای سریع BPMN2
  • بهینه سازی موتورهای جستجو محمد زند

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A Task is a unit of work, the job to be performed. When marked with a symbol it indicates a Sub-Process, an activity that can be refined.

Activity Markers Sub-Process Marker Loop Marker Parallel MI Marker Sequential MI Marker ~ Ad Hoc Marker Compensation Marker

Sequence Flow defines the execution order of activities. Conditional Flow has a condition assigned that defines whether or not the flow is used.

When splitting, it routes the sequence flow to exactly one of the outgoing branches. When merging, it awaits one incoming branch to complete before triggering the outgoing flow. Exclusive Gateway Is always followed by catching events or receive tasks. Sequence flow is routed to the subsequent event/task which happens first. Event-based Gateway When used to split the sequence flow, all outgoing branches are activated simultaneously. When merging parallel branches it waits for all incoming branches to complete before triggering the outgoing flow.

A Communication defines a set of logically related message exchanges. When marked with a symbol it indicates a Sub-Conversation, a compound conversation element. A Forked Conversation Link connects Communications and multiple Participants. A Conversation Link connects Communications and Participants.

A Choreography Task represents an Interaction (Message Exchange) between two Participants. Choreography Task

Message Flow Data Object Collapsed Sub-Process Event-based Gateway Escalation End Event Timer Intermediate Event Receive Task Attached Intermediate Timer Event Link Intermediate Event Manual Task End Event Data Store Link Intermediate Event Parallel Multiple Intermediate Event Text Annotation Group Multi Instance Task (Parallel) Message End Event Send Task

Events Gateways Conversation Diagram None: Untyped events, indicate start point, state changes or final states. Message: Receiving and sending messages. Timer: Cyclic timer events, points in time, time spans or timeouts. Error: Catching or throwing named errors. Cancel: Reacting to cancelled transactions or triggering cancellation. Compensation: Handling or triggering compensation. Conditional: Reacting to changed business conditions or integrating business rules. Signal: Signalling across different processes. A signal thrown can be caught multiple times. Multiple: Catching one out of a set of events. Throwing all events defined Link: Off-page connectors. Two corresponding link events equal a sequence flow. Terminate: Triggering the immediate termination of a process.

Swimlanes The order of message exchanges can be specified by combining message flow and sequence flow.

Data Input Task Output Data Store A Data Object represents information flowing through the process, such as business documents, e-mails, or letters. A Data Store is a place where the process can read or write data, e.g., a database or a filing cabinet. It persists beyond the lifetime of the process instance. A Data Input is an external input for the entire process. It can be read by an activity. A Data Output is a variable available as result of the entire process. A Message is used to depict the contents of a communication between two Participants. A Collection Data Object represents a collection of information, e.g., a list of order items.

 

 

25 نظر

  • محمد زند / 10 شب / 5 دی 1395, / جواب

    ارسال آرشیو محتوا

    • محمد زند / 10 شب / 5 دی 1395, / جواب

      محتوای ارسالی از آرشیو 1393

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