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 setFilter()
 Set the filter condition for the workarea
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 Prototype

     ERRCODE setFilter(
                        WORKAREAP wa,
                        DBFILTERINFOP dbFilterInfo
                      )

 Arguments

     wa is a pointer to self.

     dbFilterInfo is a pointer to a structure containing information
     about the filter condition set for the workarea.

 Description

     Sets a table filtering condition for the workarea.

 Default Behavior

     setFilter() sets the wa->filter to the filter expressions held in
     dbFilterInfo.

 Implementation Notes

     .  Prior to setting the new filter, setFilter() must perform a
        clearFilter() which is defined as releasing the Items held by the
        wa->filter structure.

 Files:  Header file is Rdd.api.