Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/exports/WaterlevelExporter.java @ 418:e0fec407a280

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ISSUE-53 Formatted number values of CSV exports. flys-artifacts/trunk@1885 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Tue, 10 May 2011 16:10:01 +0000
parents 340dc41a7ea3
children a7947972fdeb
rev   line source
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69d05357c177 Added an exporter (OutGenerator) for waterlevels which currently supports CSV exports.
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1 package de.intevation.flys.exports;
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2
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3 import java.io.OutputStream;
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4 import java.text.NumberFormat;
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5 import java.util.ArrayList;
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6 import java.util.List;
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7
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8 import org.w3c.dom.Document;
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9
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10 import org.apache.log4j.Logger;
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11
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12 import au.com.bytecode.opencsv.CSVWriter;
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13
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14 import de.intevation.artifacts.Artifact;
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15 import de.intevation.artifacts.CallContext;
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16
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17 import de.intevation.flys.artifacts.WINFOArtifact;
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18 import de.intevation.flys.artifacts.model.WQKms;
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19
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20
69d05357c177 Added an exporter (OutGenerator) for waterlevels which currently supports CSV exports.
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21 /**
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22 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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23 */
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24 public class WaterlevelExporter extends AbstractExporter {
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25
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26 /** The logger used in this exporter.*/
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27 private static Logger logger = Logger.getLogger(WaterlevelExporter.class);
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29
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30 public static final int KM_MIN_DIGITS = 3;
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31 public static final int KM_MAX_DIGITS = 3;
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32 public static final int W_MIN_DIGITS = 0;
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33 public static final int W_MAX_DIGITS = 2;
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34 public static final int Q_MIN_DIGITS = 0;
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35 public static final int Q_MAX_DIGITS = 2;
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36
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37
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38 public static final String CSV_KM_HEADER =
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39 "export.waterlevel.csv.header.km";
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40
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41 public static final String CSV_W_HEADER =
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42 "export.waterlevel.csv.header.w";
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43
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44 public static final String CSV_Q_HEADER =
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45 "export.waterlevel.csv.header.q";
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46
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47 public static final String DEFAULT_CSV_KM_HEADER = "Fluss-Km";
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48 public static final String DEFAULT_CSV_W_HEADER = "W [NN + m]";
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49 public static final String DEFAULT_CSV_Q_HEADER = "Q [m³/s]";
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52 /** The storage that contains all WQKms objects for the different facets.*/
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53 protected List<WQKms[]> data;
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54
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55
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56 public void init(Document request, OutputStream out, CallContext context) {
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57 logger.debug("WaterlevelExporter.init");
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58
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59 super.init(request, out, context);
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60
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61 this.data = new ArrayList<WQKms[]>();
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62 }
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64
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65 protected void addData(Artifact artifact) {
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66 data.add(getWaterlevelData(artifact));
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67 }
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68
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69
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70 /**
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71 * Returns the waterlevel data computed by the WINFOArtifact.
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72 *
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73 * @param artifact The WINFOArtifact.
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74 *
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75 * @return the computed waterlevel data.
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76 */
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77 protected WQKms[] getWaterlevelData(Artifact artifact) {
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78 WINFOArtifact winfoArtifact = (WINFOArtifact) artifact;
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79 WQKms[] wqkms = winfoArtifact.getWaterlevelData();
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80
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81 logger.debug("Got " + wqkms.length + " WQKms objects.");
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82
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83 return wqkms;
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84 }
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86
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87 protected void writeCSVData(CSVWriter writer) {
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88 logger.info("WaterlevelExporter.writeData");
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89
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90 writeCSVHeader(writer);
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91
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92 for (WQKms[] tmp: data) {
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93 for (WQKms wqkms: tmp) {
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94 wQKms2CSV(writer, wqkms);
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95 }
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96 }
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97 }
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99
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100 protected void writeCSVHeader(CSVWriter writer) {
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101 logger.info("WaterlevelExporter.writeCSVHeader");
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102
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103 writer.writeNext(new String[] {
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104 msg(CSV_KM_HEADER, DEFAULT_CSV_KM_HEADER),
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105 msg(CSV_W_HEADER, DEFAULT_CSV_W_HEADER),
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106 msg(CSV_Q_HEADER, DEFAULT_CSV_Q_HEADER)
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107 });
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108 }
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111 protected void wQKms2CSV(CSVWriter writer, WQKms wqkms) {
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112 logger.debug("WaterlevelExporter.wQKms2CSV");
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113
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114 NumberFormat kmf = getKmFormatter();
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115 NumberFormat wf = getWFormatter();
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116 NumberFormat qf = getQFormatter();
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117
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118 int size = wqkms.size();
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119 double[] result = new double[3];
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120
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121 for (int i = 0; i < size; i ++) {
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122 result = wqkms.get(i, result);
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123
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124 writer.writeNext(new String[] {
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125 kmf.format(result[2]),
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126 wf.format(result[0]),
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127 qf.format(result[1])
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128 });
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129 }
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130 }
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131
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132
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133 /**
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134 * Returns the number formatter for kilometer values.
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135 *
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136 * @return the number formatter for kilometer values.
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137 */
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138 protected NumberFormat getKmFormatter() {
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139 return getFormatter(KM_MIN_DIGITS, KM_MAX_DIGITS);
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140 }
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141
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142
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143 /**
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144 * Returns the number formatter for W values.
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145 *
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146 * @return the number formatter for W values.
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147 */
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148 protected NumberFormat getWFormatter() {
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149 return getFormatter(W_MIN_DIGITS, W_MAX_DIGITS);
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150 }
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151
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152
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153 /**
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154 * Returns the number formatter for Q values.
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155 *
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156 * @return the number formatter for Q values.
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157 */
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158 protected NumberFormat getQFormatter() {
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159 return getFormatter(Q_MIN_DIGITS, Q_MAX_DIGITS);
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160 }
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161 }
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162 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org