--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/common/AbstractCalculationExportableResult.java	Thu Jun 14 16:56:31 2018 +0200
@@ -0,0 +1,79 @@
+/** Copyright (C) 2017 by Bundesanstalt für Gewässerkunde
+ * Software engineering by
+ *  Björnsen Beratende Ingenieure GmbH
+ *  Dr. Schumacher Ingenieurbüro für Wasser und Umwelt
+ *
+ * This file is Free Software under the GNU AGPL (>=v3)
+ * and comes with ABSOLUTELY NO WARRANTY! Check out the
+ * documentation coming with Dive4Elements River for details.
+ */
+package org.dive4elements.river.artifacts.common;
+
+import java.util.Collection;
+
+import org.dive4elements.river.artifacts.sinfo.util.RiverInfo;
+
+import net.sf.jasperreports.engine.JRException;
+
+/**
+ * @author Domenico Nardi Tironi
+ */
+public abstract class AbstractCalculationExportableResult<RESULTS extends AbstractCalculationResults> extends AbstractCalculationResult {
+
+    private static final long serialVersionUID = 1L;
+
+    public AbstractCalculationExportableResult(final String label, final Collection<ResultRow> rows) {
+        super(label, rows);
+    }
+
+    public abstract void writeCSVHeader(ExportContextCSV exportContextCSV, final RESULTS results, final RiverInfo river);
+
+    public final void writeCsv(final ExportContextCSV exportContextCSV, final RESULTS results) {
+
+        writeCSVResultMetadata(exportContextCSV, results);
+        // wenn resultsmetadata null sind!? keine neue zeile
+        // writer.writeNext(new String[] { "" }); // break line in den Implementationen,
+        // weil es sein kann, dass KEINE ResultMetadata geschrieben werden; dann wäre eine Leerzeile überflüssig
+
+        /* now the value rows */
+        final Collection<ResultRow> rows = getRows();
+        for (final ResultRow row : rows)
+            writeCSVRow(exportContextCSV, results, row);
+    }
+
+    protected abstract void writeCSVResultMetadata(final ExportContextCSV exportContextCSV, final RESULTS results);
+
+    protected void writeCSVRow(final ExportContextCSV exportContextCSV, final RESULTS results, final ResultRow row) {
+        final String[] formattedRow = formatCSVRow(exportContextCSV, results, row);
+        exportContextCSV.writeCSVLine(formattedRow);
+
+    }
+
+    protected abstract String[] formatCSVRow(ExportContextCSV exportContextCSV, final RESULTS results, final ResultRow row);
+
+    protected abstract String[] formatPDFRow(ExportContextCSV exportContextPDF, RESULTS results, ResultRow row);
+
+    public JasperDesigner addReport(final ExportContextCSV exportContextPDF, final RESULTS results, final JasperReporter reporter,
+            final MetaAndTableJRDataSource source) throws JRException {
+
+        final JasperDesigner design = reporter.addReport(getJasperFile(), source);
+        addJRTableHeader(exportContextPDF, source, results);
+        addJRTableData(exportContextPDF, source, results);
+        return design;
+    }
+
+    protected abstract String getJasperFile();
+
+    protected abstract void addJRTableHeader(ExportContextCSV exportContextPDF, MetaAndTableJRDataSource source, RESULTS results);
+
+    private void addJRTableData(final ExportContextCSV exportContextPDF, final MetaAndTableJRDataSource source, final RESULTS results) {
+
+        final Collection<ResultRow> rows = getRows();
+
+        for (final ResultRow row : rows) {
+
+            final String[] formattedRow = formatPDFRow(exportContextPDF, results, row);
+            source.addData(formattedRow);
+        }
+    }
+}
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