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HErrorModification (Function) In french: HErreurModification
 Not available with this kind of connection
Used to: - If modification conflict occurs: return the value of an item of a record. This value is returned as a character string (empty string for binary memos).
Remark: this function must only be used during a custom management of modification conflicts (in a procedure or window called by the HFSQL engine to process the modification conflict for example). - check if a modification conflict occurred.
LOOP
// Extracts the nth item from the list of items in conflict
AnItem = ExtractString(ItemList, i, CR)
// Exit if no other item
IF AnItem = EOT THEN BREAK // Exit if no other item in conflict
// Displays the value of the item for the source record
Trace(HErrorModification(FileName, AnItem, hRecRead))
// Displays the value of the item for the file record
Trace(HErrorModification(FileName, AnItem, hRecFile))
// Displays the value of the item for the user record
Trace(HErrorModification(FileName, AnItem, hRecUser))
END
Syntax
Return the value of an item of a record Hide the details
<Result> = HErrorModification(<Data file> , <Item> [, <Item index>] , <Record to read>)
<Result>: Character string - Content of the requested item,
- Empty string ("") if no error occurred.
<Data file>: Character string Name of data file used. <Item>: Character string Name of item used. <Item index>: Optional integer Index of the item for array items only. This parameter is not required for the other types of items. <Record to read>: Integer constant Used to specify the record for which the information must be read: | | | hRecFile | Value of the item currently saved in the data file. | | hRecRead | Value of the item for the source record (read before the modification performed by HModify). | | hRecUser | Value of the item for the current record when the modification is performed (HModify). |
Check if a modification conflict occurred Hide the details
<Result> = HErrorModification()
<Result>: Boolean - True if a modification error occurred,
- False otherwise (no conflict).
Business / UI classification: Business Logic
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