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The oApp value sometimes does not log in
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Information générale
Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Divers
Thread ID:
01685542
Message ID:
01685558
Vues:
28
>>>>Hi,
>>>>
>>>>I am trying to figure out why a log file sometimes does not have a certain value.
>>>>
>>>>Here is an example:
>>>>In some programs (.prg), to check if the connection to SQL Server is valid, the code calls the application object property conn_handle. As this:
>>>>
>>>>oApp.conn_handle_source = 5 && or a different number depending on where the check is made)
>>>>=oApp.conn_handle
>>>>
>>>>
>>>>In the application class, when the call to oApp.conn_handle is made (via =oApp.conn_handle), the following method is fired: PROCEDURE conn_handle_access
>>>>This method (conn_handle_access) checks the connection. And if it is good, the following entry is logged:
>>>>
>>>>local cCalledFrom
>>>>cCalledFrom = "" 
>>>>IF this.conn_handle_source > 0
>>>>    cCalledFrom = " Called From " + ALLTRIM(STR(this.conn_handle_source))
>>>>ENDIF 
>>>>		
>>>>LOCAL ARRAY aStackArray[1,1]
>>>>ASTACKINFO(aStackArray)
>>>>cCalledFrom = CHR(13) + CHR(10) + SPACE(22) + cCalledFrom + " Program: " + aStackArray[alen(aStackArray,1)-1,2] + " Module: " + aStackArray[alen(aStackArray,1)-1,3]
>>>>
>>>>STRTOFILE( TTOC(DATETIME()) + " oApp.conn_handle_access(). " + cCalledFrom +  CHR(13) + CHR(10), cLogFilePath + cLogFileName, 1 )
>>>>
>>>>
>>>>
>>>>The problem is that sometime the .log file does not have the "Called From #" but only "Program:.... "
>>>>As if the value in property this.conn_handle_source is 0 (zero). But I check the code and a value (a number) is always assigned.
>>>>Why would the it not be in the log file?
>>>>Anybody see something wrong with the code above?
>>>>
>>>>TIA
>>>
>>>I found something that maybe causing the problem I described above. But I need to clarify something:
>>>I have this function:
>>>
>>>
>>>FUNCTION GetSqlConnectHandle
>>>RETURN oApp.conn_handle
>>>
>>>
>>>Does the code above, RETURN oApp.Conn_handle fires the method oApp.conn_handle_access?
>>>
>>>TIA
>>
>>Hi,
>>
>>Yes.
>>
>>MartinaJ
>
>Thank you, Martina! This could be a cause of many problems. Now I just need to find a rope lol

I have a question of good practice. As Martina confirmed, I get a lot of "unnecessary" calls to the method oApp.conn_handle_access. These calls do nothing but there are a lot of them. I tested the app and these calls do not seem to add a time to the program execution.
My question: Should I do away with this method oApp.conn_handle_access and create some "custom" function to check the connection to the SQL Server? Or, "unnecessary/multiple" call are not creating a problem?

TIA
"The creative process is nothing but a series of crises." Isaac Bashevis Singer
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