felix@1161: package de.intevation.flys.exports;
felix@1161: 
felix@1161: import java.io.IOException;
felix@1161: import java.io.OutputStream;
felix@1161: import java.text.NumberFormat;
felix@1161: import java.util.ArrayList;
felix@1161: import java.util.List;
felix@1161: 
felix@1161: import org.w3c.dom.Document;
felix@1161: 
felix@1161: import org.apache.log4j.Logger;
felix@1161: 
felix@1161: import au.com.bytecode.opencsv.CSVWriter;
felix@1161: 
felix@1161: import de.intevation.artifacts.CallContext;
felix@1161: 
felix@1161: import de.intevation.flys.artifacts.model.CalculationResult;
felix@1161: import de.intevation.flys.artifacts.model.WKms;
felix@1161: 
felix@1161: import de.intevation.flys.utils.Formatter;
felix@1161: 
felix@1161: /**
felix@1161:  * (CSV)Exporter for WDifferences.
felix@1161:  */
felix@1161: public class WDifferencesExporter extends AbstractExporter {
felix@1161: 
felix@1161:     /** The logger used in this exporter. */
felix@1161:     private static Logger logger = Logger.getLogger(WDifferencesExporter.class);
felix@1161: 
felix@1161: 
felix@1705:     public static final String WDIFF_CSV_KM_HEADER =
felix@1161:         "export.w_differences.csv.header.km";
felix@1161: 
felix@1705:     public static final String WDIFF_CSV_W_HEADER =
felix@1161:         "export.w_differences.csv.header.w";
felix@1161: 
felix@1705:     public static final String WDIFF_DEFAULT_CSV_KM_HEADER = "Fluss-Km";
felix@1705:     public static final String WDIFF_DEFAULT_CSV_W_HEADER  = "m";
felix@1161: 
felix@1161: 
felix@1161:     /** The storage that contains all WKms objects for the different facets. */
felix@1161:     protected List<WKms[]> data;
felix@1161: 
felix@1161: 
felix@1161:     public void init(Document request, OutputStream out, CallContext context) {
felix@1161:         logger.debug("WDifferencesExporter.init");
felix@1161: 
felix@1161:         super.init(request, out, context);
felix@1161: 
felix@1161:         this.data = new ArrayList<WKms[]>();
felix@1161:     }
felix@1161: 
felix@1161: 
felix@1161:     /**
felix@1161:      * Genereate data in csv format.
felix@1161:      */
felix@1161:     @Override
felix@1161:     public void generate()
felix@1161:     throws IOException
felix@1161:     {
felix@1161:         logger.debug("WDifferencesExporter.generate");
felix@1161: 
felix@1161:         if (facet == null) {
felix@1161:             throw new IOException("invalid (null) facet for exporter");
felix@1161:         }
felix@1161:         else if (facet.equals(AbstractExporter.FACET_CSV)) {
felix@1161:             generateCSV();
felix@1161:         }
felix@1161:         else {
felix@1161:             throw new IOException("invalid facet (" + facet + ") for exporter");
felix@1161:         }
felix@1161:     }
felix@1161: 
felix@1161: 
felix@1161:     /**
felix@1161:      * Adds given data.
felix@1161:      * @param d either a WKms or a CalculationResult to add to data.
felix@1161:      */
felix@1161:     @Override
felix@1161:     protected void addData(Object d) {
felix@1161:         if (d instanceof CalculationResult) {
felix@1161:             d = ((CalculationResult)d).getData();
felix@1161:             if (d instanceof WKms []) {
felix@1161:                 data.add((WKms [])d);
felix@1161:             }
felix@1161:         }
felix@1161:         else if (d instanceof WKms) {
felix@1161:             data.add(new WKms[] { (WKms) d });
felix@1161:         }
felix@1161:     }
felix@1161: 
felix@1161: 
felix@1161:     /**
felix@1161:      * Lets writer write all data (including header).
felix@1161:      * @param writer Writer to write data with.
felix@1161:      */
felix@1161:     @Override
felix@1161:     protected void writeCSVData(CSVWriter writer) {
felix@1161:         logger.info("WDifferencesExporter.writeData");
felix@1161: 
felix@1161:         writeCSVHeader(writer);
felix@1161: 
felix@1161:         for (WKms[] tmp: data) {
felix@1161:             for (WKms wkms: tmp) {
felix@1161:                 wKms2CSV(writer, wkms);
felix@1161:             }
felix@1161:         }
felix@1161:     }
felix@1161: 
felix@1161: 
felix@1161:     /**
felix@1161:      * Lets csvwriter write the header (first line in file).
felix@1161:      * @param write Writer to write header with.
felix@1161:      */
felix@1161:     protected void writeCSVHeader(CSVWriter writer) {
felix@1161:         logger.info("WDifferencesExporter.writeCSVHeader");
felix@1161: 
felix@1161:         writer.writeNext(new String[] {
felix@1705:             msg(WDIFF_CSV_KM_HEADER, WDIFF_DEFAULT_CSV_KM_HEADER),
felix@1705:             msg(WDIFF_CSV_W_HEADER, WDIFF_DEFAULT_CSV_W_HEADER)
felix@1161:         });
felix@1161:     }
felix@1161: 
felix@1161: 
felix@1161:     protected void wKms2CSV(CSVWriter writer, WKms wkms) {
felix@1161:         logger.debug("WDifferencesExporter.wQKms2CSV");
felix@1161: 
felix@1161:         NumberFormat kmf  = getKmFormatter();
felix@1161:         NumberFormat wf   = getWFormatter();
felix@1161:         int          size = wkms.size();
felix@1161: 
felix@1161:         for (int i = 0; i < size; i ++) {
felix@1161: 
felix@1161:             writer.writeNext(new String[] {
felix@1161:                 kmf.format(wkms.getKm(i)),
felix@1161:                 wf.format(wkms.getW(i))
felix@1161:             });
felix@1161:         }
felix@1161:     }
felix@1161: 
felix@1161: 
felix@1161:     /**
felix@1161:      * Returns the number formatter for kilometer values.
felix@1161:      *
felix@1161:      * @return the number formatter for kilometer values.
felix@1161:      */
felix@1161:     protected NumberFormat getKmFormatter() {
felix@1161:         return Formatter.getWaterlevelKM(context);
felix@1161:     }
felix@1161: 
felix@1161: 
felix@1161:     /**
felix@1161:      * Returns the number formatter for W values.
felix@1161:      *
felix@1161:      * @return the number formatter for W values.
felix@1161:      */
felix@1161:     protected NumberFormat getWFormatter() {
felix@1161:         return Formatter.getWaterlevelW(context);
felix@1161:     }
felix@1161: }
felix@1161: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :