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annotate artifacts/src/main/java/org/dive4elements/river/artifacts/sinfo/util/MetaAndTableJRDataSource.java @ 8946:5d5d482da3e9

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Implementing SINFO - FlowDepthMinMax calculation
author gernotbelger
date Tue, 13 Mar 2018 18:49:33 +0100
parents 7bbfb24e6eec
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1 /* Copyright (C) 2017 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by
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3 * Björnsen Beratende Ingenieure GmbH
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4 * Dr. Schumacher Ingenieurbüro für Wasser und Umwelt
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5 *
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6 * This file is Free Software under the GNU AGPL (>=v3)
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7 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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8 * documentation coming with Dive4Elements River for details.
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9 */
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10 package org.dive4elements.river.artifacts.sinfo.util;
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11
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12 import java.util.ArrayList;
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13 import java.util.HashMap;
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14 import java.util.List;
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15 import java.util.Map;
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16
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17 import net.sf.jasperreports.engine.JRDataSource;
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18 import net.sf.jasperreports.engine.JRException;
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19 import net.sf.jasperreports.engine.JRField;
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20
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21 /**
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22 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
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23 */
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24 public final class MetaAndTableJRDataSource implements JRDataSource {
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25
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26 private final List<String[]> data = new ArrayList<>();
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27
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28 private final Map<String, String> metaData = new HashMap<>();
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29
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30 private int index = -1;
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31
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32 public void addData(final String[] row) {
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33 this.data.add(row);
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34 }
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35
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36 public void addMetaData(final String key, final String value) {
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37 this.metaData.put(key, value);
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38 }
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39
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40 @Override
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41 public boolean next() throws JRException {
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42 this.index++;
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43
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44 return this.index < this.data.size();
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45 }
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46
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47 @Override
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48 public Object getFieldValue(final JRField field) throws JRException {
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49 final String fieldName = field.getName();
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50
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51 if (fieldName.startsWith("meta:"))
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52 return this.metaData.get(fieldName.substring("meta:".length()));
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53
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54 if (fieldName.startsWith("data:")) {
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55 final int column = Integer.valueOf(fieldName.substring("data:".length()));
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56 return this.data.get(this.index)[column];
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57 }
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58
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59 return null;
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60 }
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61 }
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