HSecurity (Function)

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HSecurity and HFlush

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HSecurity (Function)

In french: HSécurité

Available only with these kinds of connection

Enables or disables the automatic security mechanism on one or more data files.

Versions 18 and later

This function is now available in Windows Store apps mode.

New in version 18

This function is now available in Windows Store apps mode.

Remark: From version 19, HFSQL is the new name of HyperFileSQL.

Versions 21 and later

This function is now available in Universal Windows 10 App mode.

New in version 21

This function is now available in Universal Windows 10 App mode.

Versions 22 and later

This function is now available for iPhone/iPad applications.

This function is now available in Android Widget mode.

This function is now available for Android applications.

This function is now available for the Java applications.

New in version 22

This function is now available for iPhone/iPad applications.

This function is now available in Android Widget mode.

This function is now available for Android applications.

This function is now available for the Java applications.

This function is now available for iPhone/iPad applications.

This function is now available in Android Widget mode.

This function is now available for Android applications.

This function is now available for the Java applications.

Example

HSecurity(False) // Disables the protection mechanism
HSecurity(True) // Enables the protection mechanism

Syntax

<Result> = HSecurity([<Data file>, ] <Security level>)

<Result>: Integer

Former security level (before running HSecurity).

<Data file>: Optional character string (with or without quotes)

Name of data file used. If this name is not specified, HSecurity handles all the data files described in the analysis.
This parameter is ignored. The security is enabled for all the data files found in the current analysis.

<Security level>: Integer or boolean

Requested security level:
0 or False (by default): the security mechanism is disabled. The speed of the write-to-file operations is maximum.
1 or True: The security mechanism is enabled: The speed of the write-to-file operations is slower than when using HSecurity(0) but the security is ensured when writing into the data files.
2: Maximum security mechanism: The speed of write-to-file operations is slower than when using HSecurity(1).

Remarks

HSecurity and HFlush

HSecurity and HFlush can both be used to force a physical write operation on disk.

However:

HSecurity is used to force a write operation into the data files handled by each write operation. This write operation is automatically performed by the HFSQL engine. The data files used are not closed during this write operation. The speed of the write-to-file operation is slower.
HFlush is used to force a write operation into the data files handled during the call to this function. The data files used are closed then re-opened during this write operation. The speed of the write-to-file operation is not slowed down.

Component : wd250hf.dll