DF_DRIVER_USE_CACHE

Indicates whether 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 of {driverNumber} to {BooleanVariable}

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

Driver Configuration Keyword

Use_Cache

Remarks

Switches the use of structure caching (using CCH files) on or off. See Structure Caching for more information.

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 of iDriver to bAttribValue      

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

End_Procedure                                                          

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