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Task Initialization (Magic xpa 3.x)

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Created ByKnowledge Migration User
Approval Process StatusPublished
Objective
Description

Task Initialization (Magic xpa 3.x)

The Data View Preparation

  1. All of the data sources defined in the Data View Editor are opened.

  2. Magic xpa examines the task data view operations, and the task's logical record is created based on:

  • Column definitions from the Main Source and linked data sources.

  • Virtual variables and parameters.

  1. Parameter values are received from a calling task.

  2. Virtual variables are initialized with values that match the variable attribute (numeric variables are initialized with zero, alpha with blanks, etc.).

  3. The task range is defined according to the range criteria in the Range Window.

  4. The engine sorts the data view according to the specified Sort Indicators (if specified in the Sort Indicator repository).

Additional Preparations

The next steps include operations that initialize the task.

  1. I/O Devices are opened (if specified in the I/O Device repository). Note: This is only for tasks other than Rich Client.

  2. The operations in the Task Prefix logic unit are executed.

Note: At this stage, no data from the Main Source or linked sources is available.

The next step is Record Processing.

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