DF_DRIVER_USE_CACHE_EXPIRATION

Indicates whether expiration checking when structure caching must be used.

Level

Driver

Supported by

The DataFlex SQL Drivers (SQL Server, DB2 and ODBC), revision 5 and higher

Type

Boolean, temporary

Access

Read/Write

Values

True, False

Syntax

Use cli.pkg

 

Get_Attribute DF_DRIVER_USE_CACHE_EXPIRATION of {driverNumber} to {BooleanVariable}

Set_Attribute DF_DRIVER_USE_CACHE_EXPIRATION of {driverNumber} to {True|False}

Driver Configuration Keyword

Use_Cache_Expiration

Remarks

Switches the structure caching intermediate file expiration checking on or off.

Function DriverIndex String sDriver Returns Integer

    String  sCurrentDriver

    Integer iNumberOfDrivers iDriver iCount

 

    Move 0 to iDriver

    Get_Attribute DF_NUMBER_DRIVERS to iNumberOfDrivers

    For iCount From 1 To iNumberOfDrivers

        Get_Attribute DF_DRIVER_NAME of iCount To sCurrentDriver

        If ( Uppercase(sCurrentDriver) = Uppercase(sDriver) ) Begin

            Move iCount to iDriver

        End

    Loop

 

    Function_Return iDriver

End_Function // DriverIndex

 

Procedure ShowDriverAttribute

    Boolean bAttribValue

    Integer iDriver

 

    Get DriverIndex "MSSQLDRV" To iDriver

    Get_Attribute DF_DRIVER_USE_CACHE_EXPIRATION of iDriver to bAttribValue      

    Showln "Use cache expiration: " (If(bAttribValue, "YES", "NO"))

End_Procedure                                                          

The sample code above shows the current setting for a given driver.