Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/utils/VectorDataProcessor.java @ 1115:f953c9a559d8

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Added license file and license headers. gnv-artifacts/trunk@1260 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Tue, 02 Nov 2010 17:46:55 +0000
parents 846b2b70b2e0
children
rev   line source
1115
f953c9a559d8 Added license file and license headers.
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1 /*
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2 * Copyright (c) 2010 by Intevation GmbH
f953c9a559d8 Added license file and license headers.
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3 *
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4 * This program is free software under the LGPL (>=v2.1)
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5 * Read the file LGPL.txt coming with the software for details
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6 * or visit http://www.gnu.org/licenses/ if it does not exist.
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7 */
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8
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9 package de.intevation.gnv.utils;
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10
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11 import de.intevation.artifacts.CallContext;
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12
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13 import de.intevation.gnv.chart.Chart;
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14 import de.intevation.gnv.chart.ChartLabels;
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15 import de.intevation.gnv.chart.DefaultHistogram;
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16
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17 import de.intevation.gnv.geobackend.base.DefaultResult;
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18 import de.intevation.gnv.geobackend.base.DefaultResultDescriptor;
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19 import de.intevation.gnv.geobackend.base.Result;
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20 import de.intevation.gnv.geobackend.base.ResultDescriptor;
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21
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22 import de.intevation.gnv.histogram.HistogramHelper;
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23
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24 import de.intevation.gnv.state.describedata.KeyValueDescibeData;
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25
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26 import java.util.ArrayList;
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27 import java.util.Collection;
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28 import java.util.HashMap;
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29 import java.util.Iterator;
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30 import java.util.List;
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31 import java.util.Locale;
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32 import java.util.Map;
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33
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34 import org.apache.log4j.Logger;
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35
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36 import org.jfree.chart.ChartTheme;
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37
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38
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39 /**
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40 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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41 */
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42 public final class VectorDataProcessor {
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43
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44 private static Logger logger = Logger.getLogger(VectorDataProcessor.class);
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45
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46 public static Collection<Result> process(
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47 Collection<Result> input, String[] columnNames)
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48 {
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49 logger.info("Process vector data (" + input.size() + " items)");
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50
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51 ResultDescriptor outDescriptor = initResultDescriptor(columnNames);
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52 ResultDescriptor inDescriptor = null;
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53 int[] inIndices = null;
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54 int columns = -1;
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55
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56 Map series = new HashMap();
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57
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58 // for each result of the incoming result
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59 for (Result result: input) {
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60 if (inDescriptor == null || inIndices == null) {
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61 inDescriptor = result.getResultDescriptor();
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62 inIndices = inDescriptor.getColumnIndices(columnNames);
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63 columns = inDescriptor.getColumnCount();
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64 }
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65
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66 // for each column of the incoming result object
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67 for (int i = 0; i < columns; i++) {
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68 String name = inDescriptor.getColumnName(i);
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69
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70 if (!StringUtils.contains(columnNames, name)) {
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71 List list = (List) series.get(name);
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72 if (list == null)
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73 list = new ArrayList();
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74
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75 Result out = new DefaultResult(outDescriptor);
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76 Object value = result.getObject(i);
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77
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78 // skipp results that have no data value
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79 if (value == null)
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80 continue;
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81
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82 out.addColumnValue(0, value);
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83
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84 // add meta data to result object
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85 // TODO: Maybe we could do this one single time, because the
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86 // TODO: meta data will not change
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87 for (int j = 1; j < inIndices.length -1; j++) {
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88 out.addColumnValue(j, result.getObject(inIndices[j]));
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89 }
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90
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91 // add the name of the component to distinguish between
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92 // different series later in the chart creation
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93 out.addColumnValue(inIndices.length-1, name);
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94
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95 list.add(out);
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96 series.put(name, list);
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97 }
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98 }
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99 }
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100
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101 // finally, we put all lists together
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102 Iterator iter = series.values().iterator();
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103 List output = new ArrayList();
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104 while (iter.hasNext()) {
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105 output.addAll((Collection)iter.next());
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106 }
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107
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108 logger.info("Data processing created " + output.size() + " elements.");
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109 return output;
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110 }
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111
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112
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113 public static ResultDescriptor initResultDescriptor(String[] columnNames) {
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114 logger.debug("Init ResultDescriptor for outgoing results.");
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115
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116 ResultDescriptor desc = new DefaultResultDescriptor();
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117
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118 for (String name: columnNames) {
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119 desc.addColumn(name, "java.lang.String");
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120 }
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121
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122 logger.debug("Outgoing ResultDescriptor has " + desc.getColumnCount() +
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123 " columns");
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124 return desc;
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125 }
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126
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127
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128 public static Chart[] getHistograms(
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129 String uuid,
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130 CallContext callContext,
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131 Collection<KeyValueDescibeData> results,
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132 ChartTheme theme,
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133 Map requestParameter
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134 ) {
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135 Locale locale = (Locale) requestParameter.get("locale");
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136
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137 Object[][] data = HistogramHelper.prepareVectorialHistogramData(results);
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138 int size = data.length;
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139
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140 Chart[] histograms = new Chart[size];
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141
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142 for (int i = 0; i < size; i++) {
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143 ChartLabels labels = HistogramHelper.createHistogramLabels(
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144 uuid, callContext, locale, data[i]);
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145
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146 histograms[i] = new DefaultHistogram(
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147 labels, data[i], theme, requestParameter);
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148 }
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149
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150 return histograms;
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151 }
1040
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152 }
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153 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org