url.append("/");
url.append(ServletContextParameterMap.getParameterValue(ContextParameter.JSON_PUBLISH_RELATIVE_DIR));
url.append(contextName);
writer.setGlobalContext(context, new ContextIdentifier(context.toString(), new URL(url.toString())));
}
writer.addPrefixes(mapping.getPrefixes());
RootStrategy strategy = new UserSpecifiedRootStrategy(rootTriplesMapId, new SteinerTreeRootStrategy(new WorksheetDepthRootStrategy()));
KR2RMLWorksheetRDFGenerator generator = new KR2RMLWorksheetRDFGenerator(worksheet, f, ontMgr, writer, false, strategy, mapping, errorReport, selection);
try {
generator.generateRDF(true);
logger.info("RDF written to file.");