RSIterator rsExistingIter = resultModel.listReifiedStatements(); while (rsExistingIter.hasNext()) { ReifiedStatement rstmt = rsExistingIter.next(); Statement st = rstmt.getProperty(DC.source); String source = st.getObject().toString(); long addedStatements = 0; while (rsIter.hasNext()) { ReifiedStatement rstmt = rsIter.next();