HRetrieveLog (Function)

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HFSQL Client/Server functions

HRetrieveLog

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Example

Format of the lines in the text file

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Format of the lines in the text file

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HRetrieveLog (Function)

In french: HRécupèreLog

Available only with this kind of connection

Creates a text file containing the server logs between two given dates.

Remark: This function is an advanced function. Remark: From version 19, HFSQL is the new name of HyperFileSQL.

Example

// Retrieve the server logs for 2018
IF HRetrieveLog("MyConnection", "20180101", "20183112", "C:\My Documents\MyLogs.txt") = False THEN
Error("The logs have not been retrieved: " + HError())
END

// Retrieve the server logs for 2018
IF HRetrieveLog("MyConnection", "20180101", "20183112", "\My Documents\MyLogs.txt") = False THEN
Error("The logs have not been retrieved: " + HError())
END

Syntax

<Result> = HRetrieveLog(<Connection> , <Start date> , <End date> , <Destination Log file> [, <Progress Bar>])

<Result>: Boolean

True if the logs have been retrieved,
False otherwise. HError is used to identify the error.

<Connection>: Character string (with or without quotes) or Connection variable

Connection to the server from which the logs must be retrieved. This connection corresponds to:
the name of the connection defined in the data model editor or with HDescribeConnection or HOpenConnection.
the name of a Connection variable.

<Start date>: Character strings with quotes

Date from which the server logs must be retrieved. This date is in YYYYMMDDHHMMSSMMM format. If only the date is specified ("YYYYMMDD"), it will be rounded up automatically. For example, "20061121" will be rounded to "20061121000000000".

<End date>: Character string with quotes

Date until which the server logs must be retrieved. This date is in YYYYMMDDHHMMSSMMM format. If only the date is specified ("YYYYMMDD"), it will be rounded up automatically. For example, "20061121" will be rounded to "20061121235959999".

<Destination Log file>: Character string (with quotes)

Text file into which will be written the content of the server log between the two dates. If this file already exists, it will be overwritten.

<Progress Bar>: Optional control name, optional window name or optional integer

Versions 21 and later
Progress Bar:
Name of window where the progress bar will be displayed or name of Progress Bar control.
Identifier (Handle) of window that displays the progress bar.
This parameter is ignored.
New in version 21
Progress Bar:
Name of window where the progress bar will be displayed or name of Progress Bar control.
Identifier (Handle) of window that displays the progress bar.
This parameter is ignored.
Progress Bar:
Name of window where the progress bar will be displayed or name of Progress Bar control.
Identifier (Handle) of window that displays the progress bar.
This parameter is ignored.

Remarks

Format of the lines in the text file

The lines in the text file have the following format:

For a call:

<Line Size> + TAB + <Type> + TAB + <Call Identifier> + TAB + <Date> + TAB +
<Thread Identifier> + TAB + <Context Identifier> + TAB + <Login> + TAB +
<Client Computer> + TAB + <Client Application> + TAB + <Application Version> + TAB +
<Function Number> + TAB + <Parameters>
For the end of a call:

<Line Size> + TAB + <Type> + TAB + <Call Identifier> + TAB +
<Date> + TAB + <Context Identifier> + TAB + <Parameters>

Where:

<Line size> is a 8-character hexadecimal number used to define the size of the line for the logs, the 8 characters not being taken into account in the specified size.
<Type> can take the following values:
- 1: Beginning of function
- 2: End of function
- 3: Error
<Date> has the following format: YYYYMMDDHHMMSSCCm
<Parameters> has the following format:
- <Identifier du parameter 1> + "=" + <Value of parameter 1> + Charact(0) + Charact(255) +
- <Identifier of parameter 2> + "=" + <Value of parameter 2> + Charact(0) + Charact(255) + ... +
- <Identifier of parameter N> + "=" + <Value of parameter N> + Charact(0)

Component : wd250hf.dll