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NIHVIVO-2489

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The functionality for ASK query is added to the SparqlQueryServlet. The output is a boolean true/false. ASK query returns a boolean
based on if the pattern in the query exists in the model or not.
This commit is contained in:
deepakkoni 2011-07-11 21:06:39 +00:00
parent a26824b46e
commit 619aa66c67
1 changed files with 7 additions and 0 deletions
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7
webapp/src/edu/cornell/mannlib/vitro/webapp/controller/SparqlQueryServlet.java
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@ -4,6 +4,7 @@ package edu.cornell.mannlib.vitro.webapp.controller;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.io.Writer;
import java.net.URLDecoder;
import java.util.ArrayList;
@ -239,6 +240,12 @@ public class SparqlQueryServlet extends BaseEditController {
resultModel = qe.execConstruct();
}else if ( query.isDescribeType() ){
resultModel = qe.execDescribe();
}else if(query.isAskType()){
//Irrespective of the ResultFormatParam, this always prints a boolean to the default OutputStream.
String result = (qe.execAsk() == true) ? "true" : "false";
PrintWriter p = response.getWriter();
p.write(result);
return;
}
response.setContentType(rdfFormatSymbols.get(rdfResultFormatParam));
OutputStream out = response.getOutputStream();