private static DataSet<Tuple2<String, String>> getDocumentsDataSet( ExecutionEnvironment env, ParameterTool params) { // Create DataSet for documents relation (URL, Doc-Text) if (params.has("documents")) { return env.readCsvFile(params.get("documents")) .fieldDelimiter("|") .types(String.class, String.class); } else { System.out.println("Executing WebLogAnalysis example with default documents data set."); System.out.println("Use --documents to specify file input."); return WebLogData.getDocumentDataSet(env); } }