Mashup Code Sample - WebClipping Mashup example with EMML and XPath

In this mashup you can see how to do a simple webclipping from the Office Depot online store using the directInvoke function in emml

<variable name="endpointURLPrefix" type="string" default="http://www.officemax.com.mx/store/detail.aspx?ID="   />
<!-- Building the endpoint with the parameter -->
          <assign outputvariable="endpointURL" fromexpr="concat($endpointURLPrefix,$productId)"    />
<!-- Calling the endpoint webpage -->
          <directinvoke endpoint="$endpointURL" method="GET" outputvariable="htmlResult"   />

and get´s the price of a specific product parsing the output with XPath.

<!-- Parsing with XPath and building the output -->
           <appendresult outputvariable="result">
              <price>{(substring($htmlResult//*:span[@class="price red"]/string(),2))}</price>
          </appendresult>

This approach is good webpages that return well formed xml.