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Stored procedures
The PersistedCalculatedItem property is used to:
  • Find out whether the value of a calculated item is stored in the data file. This item was defined in the data model editor or through programming.
  • Define whether the value of a calculated item is stored in the data file (when describing the item through programming).
Remark: The calculated items correspond to the "Expression" items in the data model editor.
Example
AFile is File Description
AnItem is Item Description
AnItem.Name = "CmdDate"
AnItem.CalculatedItemExpression = "'Written by ' + CURRENT_USER + ' on ' + SYSDATE"
AnItem.PersistedCalculatedItem = True
HDescribeItem(AFile, AnItem)
Syntax

Find out whether the value of a calculated item is stored in the data file Hide the details

<Result> = <Data file>.<Item>.PersistedCalculatedItem
<Result>: Boolean
  • True if the value of the calculated item is stored in the data file.
  • False if the value of the item is recalculated at each reading.
<Data file>: File name
Name of the data file used.
<Item>: Item name
Name of item used.
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Indicating whether the value of a calculated item must be stored in the data file Hide the details

<Item>.PersistedCalculatedItem = <Value>
<Item>: Item name
Name of the item used. This name was defined by the Item Description type.
<Value>: Boolean
  • True if the value of the calculated item must be stored in the data file.
  • False if the value of the item must be recalculated at each read operation.
Minimum version required
  • Version 21
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