Functions and Directives

Function AX_AXSLocking() Professional

Query or set the ADS locking scheme.

Syntax
AX_AXSLocking( [<lScheme>] ) --> lLockMode
Parameters
<lScheme>
The optional parameter <lScheme> determines either to set the ADS locking scheme to ADSDBE_PROPRIETARY_LOCKING ( .T. ) or to ADSDBE_COMPATIBLE_LOCKING ( .F. ).
Return

This function returns whether the ADSDBE is set to proprietary locking ( .T. ) or compatible locking ( .F. ).

Description

If this function is called without a parameter, it returns whether the ADSDBE is operating with a proprietary locking scheme ( .T. ) or with a compatible locking scheme ( .F. ).

By passing a logical value to the function call, it is further possible to set a new locking scheme for the ADSDBE. By passing .T. to the function, the ADSDBE is instructed to use a proprietary locking scheme. Passing .F.will result in a usage of the compatible locking scheme.

Examples
#include "ads.ch" 


// Install ADSDBE as default database engine. 
PROCEDURE DbeSys 
   IF !DbeLoad( "ADSDBE" ) 
      Alert( "ADSDBE could not be installed!" ) 
   ENDIF 
   DbeSetDefault( "ADSDBE" ) 
RETURN 


PROCEDURE Main 
   // Connect to database server. 
   LOCAL cConnect := "DBE=ADSDBE;SERVER=\\ALASKA\VOL1" 
   LOCAL oSession := DacSession():new( cConnect ) 

   IF .NOT. oSession:isConnected() 
      Alert( "Connection to server could not be established!" ) 
      QUIT 
   ENDIF 

   // Determine the type of the locking scheme. 
   IF AX_AXSLocking() 
      ? "ADSDBE is using the proprietary locking scheme." 
   ELSE 
      ? "ADSDBE is using the compatible locking scheme." 
   ENDIF 

   // Close databases and disconnect from server. 
   DbCloseAll() 
   oSession:disconnect() 
RETURN 
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