final SPARQL2CoreSPARQLParserVisitorImplementationDumper spvid = SPARQL2CoreSPARQLParserVisitorImplementationDumper.createInstance();
final String corequery = (root==null)?"":(String) spvid.visit(root);
root = StreamSPARQL1_1Parser.parse(corequery);
// checkForTimeFunc(root);
final StreamOperatorGraphGenerator spvi = StreamOperatorGraphGenerator.createOperatorGraphGenerator(this);
spvi.visit((ASTQuery)root);
this.rootNode = spvi.getOperatorgraphRoot();
this.result = spvi.getResult();
this.determinePatternMatchers();
this.rootNode.deleteParents();
this.rootNode.setParents();