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RDDLIST()

Return an array of the available Replaceable Database Drivers
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 Syntax

        RDDLIST([<nRDDType>]) --> aRDDList  

 Arguments

        <nRDDType>   is an integer that represents the type of the RDD 
                  you wish to list.  The constants RDT_FULL and
                  RDT_TRANSFER represent the two  types of RDDs currently
                  available.

       RDDType  Summary 
       RDDType  Summary 
                  ------------------------------------------------
                  Constant       Value     Meaning
       RDDType  Summary 
                  ------------------------------------------------
                  RDT_FULL       1         Full RDD implementation
                  RDT_TRANSFER   2         Import/Export only driver
       RDDType  Summary 
                  ------------------------------------------------

        RDT_FULL   identifies full-featured RDDs that have all the 
                  capabilities associated with an RDD.

        RDT_TRANSFER   identifies RDDs of limited capability.  They can 
                  only transfer records between files.  You cannot use
                  these limited RDD  drivers to open a file in a work area.
                  The SDF and DELIM drivers are  examples of this type of
                  RDD.  They are only used in the implementation  of APPEND
                  FROM and COPY TO with SDF or DELIMITED files.

 Returns

        RDDLIST()   returns a one-dimensional array of the RDD names 
                  registered with the application as <nRDDType>.

 Description

      RDDLIST() is an RDD function that returns a one-dimensional array that
      lists the available RDDs.

      If you do not supply <nRDDType>, all available RDDs, regardless of
      type,  are returned.

 Examples

     In this example RDDLIST() returns an array containing the
      character strings, "DBF", "SDF", "DELIM", "DBFCDX", and "DBFNTX":

      REQUEST DBFCDX

      .
      . < statements >
      .

      aRDDs := RDDLIST()

            // Returns {"DBF", SDF", "DELIM", "DBFCDX", "DBFNTX" }

     In this example, RDDLIST() returns an array containing the
      character strings, "SDF" and "DELIM":

      #include "rddsys.ch"
      .
      . < statements >
      .
      aImpExp := RDDLIST( RDT TRANSFER )


 Tests




Status

      Ready