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How to set MasterFieldLinks at runtime

edited June 2006 in Datapipelines
I would like to set MasterFieldLinks of DBPipeline at runtime but do not
know how.

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  • edited June 2006
    ---------------------------------------------------------
    Tech Tip: Define Master/Detail DataPipeline Links in Code
    ---------------------------------------------------------

    Defining a Master/Detail relationship for a DataPipeline
    requires that the detail pipeline have the
    following properties defined:

    1. MasterDataPipeline

    2. MasterFieldLinks


    At Delphi design-time you can use the object inspector
    and the DataPipeline's FieldLinks editor to define
    the master/detail relationship.


    The following example illustrates how to define the
    master/detail relationship dynamically at run-time.


    var
    lFieldLink: TppMasterFieldLink;


    begin

    {define the master/detail pipeline relationship}
    plDetail.MasterDataPipeline := plMaster;

    {create a new field link }
    lFieldLink := TppMasterFieldLink.Create(nil);

    lFieldLink.Parent := plDetail;

    {assign the detail field name}
    lFieldLink.DetailFieldName := 'CustNo';

    {assign the master field name}
    lFieldLink.MasterFieldName := 'CustNo';


    end;


    Note: The DataPipeline linking requires the records in the detail dataset to
    be ordered by the linking fields. In the above example, the detail data must
    be ordered by CustNo.


    --
    Regards,

    Nico Cizik
    Digital Metaphors
    http://www.digital-metaphors.com

    Best Regards,

    Nico Cizik
    Digital Metaphors
    http://www.digital-metaphors.com
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