--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/common/AbstractCommonExporter.java	Thu Apr 12 19:15:42 2018 +0200
@@ -0,0 +1,240 @@
+/** 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.io.OutputStream;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.apache.log4j.Logger;
+import org.dive4elements.artifacts.CallMeta;
+import org.dive4elements.artifacts.common.utils.Config;
+import org.dive4elements.river.artifacts.model.CalculationResult;
+import org.dive4elements.river.artifacts.resources.Resources;
+import org.dive4elements.river.artifacts.sinfo.util.MetaAndTableJRDataSource;
+import org.dive4elements.river.artifacts.sinfo.util.RiverInfo;
+import org.dive4elements.river.exports.AbstractExporter;
+
+import au.com.bytecode.opencsv.CSVWriter;
+import net.sf.jasperreports.engine.JRDataSource;
+import net.sf.jasperreports.engine.JRElement;
+import net.sf.jasperreports.engine.JRException;
+import net.sf.jasperreports.engine.JRPrintPage;
+import net.sf.jasperreports.engine.JasperCompileManager;
+import net.sf.jasperreports.engine.JasperExportManager;
+import net.sf.jasperreports.engine.JasperFillManager;
+import net.sf.jasperreports.engine.JasperPrint;
+import net.sf.jasperreports.engine.JasperReport;
+import net.sf.jasperreports.engine.design.JasperDesign;
+import net.sf.jasperreports.engine.util.JRProperties;
+import net.sf.jasperreports.engine.xml.JRSaxParserFactory;
+import net.sf.jasperreports.engine.xml.JRXmlLoader;
+
+/**
+ * @author Gernot Belger
+ */
+public abstract class AbstractCommonExporter<RESULT extends AbstractCalculationResult, RESULTS extends AbstractCalculationResults<RESULT>> extends AbstractExporter {
+
+    /** The storage that contains the current calculation result. */
+    protected static enum ExportMode {
+        pdf, csv
+    }
+
+    /** The log used in this exporter. */
+    protected abstract Logger getLog();
+
+    protected RESULTS data = null;
+
+    public RESULTS getData() {
+        return this.data;
+    }
+
+    @Override
+    protected void addData(final Object d) {
+        /* reset */
+        this.data = null;
+
+        if (d instanceof CalculationResult) {
+
+            final Object dat = ((CalculationResult) d).getData();
+            if (dat != null) {
+                @SuppressWarnings("unchecked")
+                final RESULTS result = (RESULTS) dat;
+                this.data = result;
+            }
+        }
+    }
+
+    /**
+     * Formats header with unit and label: msg [unit] (label)
+     */
+    protected String msgUnitLabel(final String key, final String unit, final String label) {
+        final String msg = msg(key);
+        return String.format("%s [%s] (%s)", msg, unit, label);
+    }
+
+    @Override
+    protected void writeCSVData(final CSVWriter writer) {
+        getLog().info("writeCSVData");
+
+        /* fetch calculation results */
+        final RESULTS results = this.data;
+
+        /* write as csv */
+        writeCSVGlobalMetadata(writer, results);
+        writer.writeNext(new String[] { "" }); // break line HERE to avoid redundance
+        final RiverInfo river = results.getRiver();
+        // FIXME :with comment if not first result
+        writeCSVHeader(writer, results, river);
+        writer.writeNext(new String[] { "" }); // break line HERE to avoid redundance
+
+        for (final RESULT result : results.getResults()) {
+            writeCSVResult(writer, results, result);
+            writer.writeNext(new String[] { "" }); // break line HERE after each resultset
+        }
+
+    }
+
+    protected abstract void writeCSVHeader(final CSVWriter writer, final RESULTS results, final RiverInfo river);
+
+    /**
+     * Add metadata that is once written to the top of the file.
+     */
+    protected abstract void writeCSVGlobalMetadata(final CSVWriter writer, final RESULTS results);
+
+    protected void writeCSVMetaEntry(final CSVWriter writer, final String message, final Object... messageArgs) {
+
+        final CallMeta meta = this.context.getMeta();
+
+        writer.writeNext(new String[] { Resources.getMsg(meta, message, message, messageArgs) });
+    }
+
+    private void writeCSVResult(final CSVWriter writer, final RESULTS results, final RESULT result) {
+
+        writeCSVResultMetadata(writer, results, result);
+        writer.writeNext(new String[] { "" }); // break line HERE to avoid redundance
+
+        // final RiverInfo river = results.getRiver();
+        //
+        // writeCSVHeader(writer, results, river);
+        /* now the value rows */
+        final Collection<ResultRow> rows = result.getRows(); // war mal SInfoResultRow
+        for (final ResultRow row : rows) {
+            writeCSVRow(writer, results, result, row);
+        }
+    }
+
+    /**
+     * Add metadata that is written once per result set.
+     */
+    protected abstract void writeCSVResultMetadata(CSVWriter writer, RESULTS results, RESULT result);
+
+    protected void writeCSVRow(final CSVWriter writer, final RESULTS results, final RESULT result, final ResultRow row) {
+        getLog().debug("writeCSVFlowDepthRow");
+
+        final String[] formattedRow = formatCSVRow(results, row);
+        writer.writeNext(formattedRow);
+    }
+
+    protected final String[] formatCSVRow(final RESULTS results, final ResultRow row) {
+        return formatRow(results, row, ExportMode.csv);
+    }
+
+    // protected abstract void tweakDesign()
+
+    @Override
+    protected void writePDF(final OutputStream outStream) {
+        getLog().debug("write PDF");
+
+        final JRDataSource source = createJRData();
+        final JRDataSource source2 = createJRData();
+
+        final String confPath = Config.getConfigDirectory().toString();
+
+        // FIXME: distinguish between with and without tkh: we need two jasper reports!
+
+        final Map<String, Object> parameters = new HashMap<>();
+        parameters.put("ReportTitle", "Exported Data");
+
+        try {
+
+            // JRProperties.setProperty(JRProperties.COMPILER_XML_VALIDATION, false);
+            JRProperties.setProperty(JRSaxParserFactory.PROPERTY_REPORT_PARSER_FACTORY, JRReportSaxParserFactory.class.getName());
+
+            final String jasperPath = confPath + getJasperFile();
+            final JasperDesign test = JRXmlLoader.load(jasperPath);
+
+            final JRElement element = test.getColumnHeader().getElementByKey("TEST");
+            // element.setWidth(200);
+
+            final JasperReport compiled = JasperCompileManager.compileReport(test);
+
+            final JasperPrint print = JasperFillManager.fillReport(compiled, parameters, source);
+            // JasperExportManager.exportReportToPdfStream(print, outStream);
+
+            final JasperPrint print2 = JasperFillManager.fillReport(compiled, parameters, source2);
+
+            final List<JRPrintPage> pages = print2.getPages();
+            for (final JRPrintPage page : pages)
+                print.addPage(page);
+
+            JasperExportManager.exportReportToPdfStream(print, outStream);
+        }
+        catch (final JRException je) {
+            getLog().warn("Error generating PDF Report!", je);
+        }
+    }
+
+    protected abstract String getJasperFile();
+
+    private JRDataSource createJRData() {
+
+        /* fetch calculation results */
+        final RESULTS results = this.data;
+
+        final MetaAndTableJRDataSource source = new MetaAndTableJRDataSource();
+
+        addJRMetaData(source, results);
+
+        for (final RESULT result : results.getResults()) {
+            addJRTableData(source, results, result);
+        }
+
+        return source;
+    }
+
+    protected abstract void addJRMetaData(final MetaAndTableJRDataSource source, final RESULTS results);
+
+    protected void addJRTableData(final MetaAndTableJRDataSource source, final RESULTS results, final RESULT result) {
+
+        final Collection<ResultRow> rows = result.getRows();
+
+        for (final ResultRow row : rows) {
+
+            final String[] formattedRow = formatPDFRow(results, row);
+            source.addData(formattedRow);
+        }
+    }
+
+    protected abstract String[] formatRow(RESULTS results, ResultRow row, ExportMode mode);
+
+    protected final String[] formatPDFRow(final RESULTS results, final ResultRow row) {
+        // @Override
+        // protected String[] formatPDFRow(final FlowDepthDevelopmentCalculationResults results, final ResultRow row) {
+        return formatRow(results, row, ExportMode.pdf);
+        // }
+    }
+
+    protected abstract void writeCSVGlobalMetadataDefaults(final CSVWriter writer, final RESULTS results);
+
+    protected abstract void addJRMetaDataDefaults(final MetaAndTableJRDataSource source, final RESULTS results);
+}
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