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  • Handling records during a transaction
  • Transactions and independent HFSQL context
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Stored procedures
Allows you to find out whether a transaction was interrupted (the transaction was neither validated nor canceled). The characteristics of the interrupted transaction are returned by the HFSQL variables.
We advise you to call this function in the project initialization code. If the transaction is interrupted, you can:
  • HFSQL Classic start WDTRANS or WDOptimizer.
  • HFSQL Client/Server start the HFSQL Control Center.
  • cancel the transaction through programming.
HFSQL Client/Server This function is useful when transactions have been interrupted on password-protected data files.
AndroidAndroid Widget iPhone/iPadIOS WidgetMac Catalyst The management of transactions is available for HFSQL Client/Server databases.
Example
IF HTransactionInterrupted("") = True THEN
HTransactionCancel()
END
Syntax
<Result> = HTransactionInterrupted([<Transaction file>])
<Result>: Boolean
  • True if a transaction was interrupted,
  • False if no transaction was interrupted. The following HFSQL variables are updated:
    H.TrsApplicationNameValue if the transaction was interrupted: Application name in the following format: Executable Name(Project Name).
    Value if the transaction was not interrupted: Empty string ("").
    Remark: This variable is available in HFSQL Client/Server mode only.
    H.TrsInternalIDValue if the transaction was interrupted: Internal number used to identify the transaction.
    Value if the transaction was not interrupted: -1
    H.TrsMachineNameValue if the transaction was interrupted: Name and IP address of client computer.
    Value if the transaction was not interrupted: Empty string ("").
    Remark: This variable is available in HFSQL Client/Server mode only.
    H.TrsPostValue if the transaction was interrupted: Identifier defined by HComputer or name of the computer from which the transaction was started.
    Value if the transaction was not interrupted: Empty string ("")
<Transaction file>: Optional character string
Full name of the transaction file (used to store the operations performed within the transaction). This file is automatically destroyed when HTransactionEnd or HTransactionCancel is used.
If this name corresponds to an empty string ("") or if it is not specified, the transaction file used is the default transaction file (in the directory of the application named: <Project Name>_$TRS_OPERATION.trs).
HFSQL Client/Server This parameter is ignored by the Client/Server transactions, it is only taken into account by the HFSQL Classic transactions.
Remarks

Handling records during a transaction

During a transaction, some rules must be complied with when handling the records. For more details, see Transactions: Handling records during a transaction.

Transactions and independent HFSQL context

When copying a context, if a transaction is in progress on the first context, the new context is not in transaction. You must call HTransactionStart (or HTransaction) to start a transaction in the new context.
Business / UI classification: Business Logic
Component: wd290hf.dll
Minimum version required
  • Version 9
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Last update: 08/31/2023

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