How to use refiners in search?

Question

I'm using Microsoft Search Server Express 2010 and need to implement search with refiners through the search.asmx web service. Currently I'm trying to execute following query:

<QueryPacket xmlns="urn:Microsoft.Search.Query">
  <Query>
    <SupportedFormats>
      <Format>urn:Microsoft.Search.Response.Document.Document</Format>
    </SupportedFormats>
    <Context>
      <QueryText>us</QueryText>
    </Context>
    <Properties>
      <Property name="Author" />
    </Properties>
    <EnableStemming>true</EnableStemming>
    <EnableSpellCheck>false</EnableSpellCheck>
    <IncludeRelevantResults>true</IncludeRelevantResults>
    <Range>
      <Count>20</Count>
    </Range>
    <IncludeRefinementResults>
      <Refiners>
        <Refiner>author</Refiner>
      </Refiners>
    </IncludeRefinementResults>
  </Query>
</QueryPacket>

against the QueryEx method. I'm getting the RelevantResults table, but no RefinementResults is present in the DataSet.

Is it possible to use refiners with the search.asmx web service? If so then how to do it properly?

Answer 1

According to MSDN, IncludeRefinementResults, Refiners, and Refiner elements apply only to FAST Search Server 2010 for SharePoint.