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System and method for data abstraction using formatted system variables

  • US 8,561,019 B2
  • Filed: 08/11/2006
  • Issued: 10/15/2013
  • Est. Priority Date: 08/11/2006
  • Status: Active Grant
First Claim
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1. A method for retrieving a formatted data value from a data layer to a business logic layer, comprising:

  • invoking a first procedure within the business logic layer the first procedure being a formatted variable abstraction procedure preprogrammed for a particular formatted variable;

    passing at least one parameter to the first procedure, the at least one parameter identifying a formatted system variable; and

    selecting, from a table of formatted variables and based upon the formatted system variable, a second procedure, the second procedure being a separate procedure from the first procedure;

    building, within the first procedure, a dynamic statement to identify the second procedure from the table, such that execution, by the first procedure, of the dynamic statement invokes the second procedure to;

    retrieve one or more data items from the data layer;

    format the data items, within the second procedure, to form a formatted data value before returning from the dynamic statement; and

    return the formatted data value to the dynamic statement, and return the formatted data value from the dynamic statement to the business logic layer via the first procedure,wherein the at least one parameter includes one or more of tag name, key value, return status, return value, subject key value, and image.

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