Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/services/GaugeInfoService.java @ 8202:e4606eae8ea5

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sed src/**/*.java 's/logger/log/g'
author Sascha L. Teichmann <teichmann@intevation.de>
date Fri, 05 Sep 2014 12:58:17 +0200
parents af13ceeba52a
children 0a5239a1e46e
rev   line source
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.artifacts.services;
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10
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11 import java.util.ArrayList;
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12 import java.util.List;
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13
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14 import org.w3c.dom.Document;
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15 import org.w3c.dom.Element;
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16
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17 import org.apache.log4j.Logger;
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18
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19 import org.dive4elements.artifacts.common.ArtifactNamespaceContext;
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20 import org.dive4elements.artifacts.common.utils.XMLUtils;
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21 import org.dive4elements.artifacts.common.utils.XMLUtils.ElementCreator;
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22
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23 import org.dive4elements.artifacts.CallMeta;
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24 import org.dive4elements.artifacts.GlobalContext;
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25
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26 import org.dive4elements.river.model.Gauge;
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27 import org.dive4elements.river.model.Range;
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28 import org.dive4elements.river.model.River;
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29
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30 import org.dive4elements.river.artifacts.model.RiverFactory;
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31
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32
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33 /**
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34 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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35 */
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36 public class GaugeInfoService extends D4EService {
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37
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38 interface Filter {
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39 boolean apply(Gauge gauge);
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40 }
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41
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42
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43 private static final class ReferenceNumberFilter implements Filter {
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44 private long refNr;
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45
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46 public ReferenceNumberFilter(long refNr) {
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47 this.refNr = refNr;
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48 }
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49
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50 @Override
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51 public boolean apply(Gauge gauge) {
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52 if (log.isDebugEnabled()) {
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53 log.debug("Test gauge '" + gauge.getName() + "'");
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54 }
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55
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56 return gauge != null && gauge.getOfficialNumber() == refNr;
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57 }
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58 } // end of ReferenceNumberFilter class
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59
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60
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61 /** The log that is used by this service.*/
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62 private static Logger log = Logger.getLogger(GaugeInfoService.class);
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63
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64
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65 public static final String XPATH_RIVERNAME = "/art:river/@name";
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66
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67 public static final String XPATH_REFERENCE_NR
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68 = "/art:river/art:filter/art:gauge/text()";
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69
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70
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71 public GaugeInfoService() {
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72 }
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73
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74
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75 @Override
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76 public Document doProcess(
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77 Document data,
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78 GlobalContext context,
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79 CallMeta callMeta
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80 ) {
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81 log.debug("GaugeInfoService.process");
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82
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83 if (log.isDebugEnabled()) {
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84 log.debug(XMLUtils.toString(data));
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85 }
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86
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87 River river = getRiverFromRequest(data);
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88
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89 List<Filter> filters = getFilters(data);
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90 List<Gauge> allGauges = river.getGauges();
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91 List<Gauge> filtered = new ArrayList<Gauge>();
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92
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93 for (Gauge g: allGauges) {
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94 for (Filter f: filters) {
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95 if (f.apply(g)) {
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96 filtered.add(g);
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97 break;
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98 }
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99 }
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100 }
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101
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102 return buildInfoDocument(filtered);
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103 }
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104
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105
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106 protected River getRiverFromRequest(Document data) {
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107 String rivername = XMLUtils.xpathString(
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108 data,
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109 XPATH_RIVERNAME,
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110 ArtifactNamespaceContext.INSTANCE);
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111
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112 log.debug("Return Gauge info for River '" + rivername + "'");
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113
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114 return rivername != null ? RiverFactory.getRiver(rivername) : null;
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115 }
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116
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117
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118 protected List<Filter> getFilters(Document data) {
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119 List<Filter> filters = new ArrayList<Filter>();
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120
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121 String refNr = XMLUtils.xpathString(
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122 data,
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123 XPATH_REFERENCE_NR,
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124 ArtifactNamespaceContext.INSTANCE);
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125
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126 if (refNr != null && refNr.length() > 0) {
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127 try {
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128 filters.add(
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129 new ReferenceNumberFilter(Long.parseLong(refNr)));
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130 }
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131 catch (NumberFormatException nfe) {
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132 log.warn(nfe, nfe);
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133 }
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134 }
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135
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136 return filters;
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137 }
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138
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139
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140 protected Document buildInfoDocument(List<Gauge> gauges) {
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141 Document doc = XMLUtils.newDocument();
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142
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143 ElementCreator cr = new ElementCreator(
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144 doc,
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145 ArtifactNamespaceContext.NAMESPACE_URI,
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146 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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147
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148 Element service = cr.create("service");
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149
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e4606eae8ea5 sed src/**/*.java 's/logger/log/g'
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150 log.debug("Append " + gauges.size() + " gauges to info doc.");
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151
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152 for (Gauge g: gauges) {
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153 Range r = g.getRange();
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154
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155 Element el = cr.create("gauge");
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156 cr.addAttr(el, "name", g.getName());
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157 cr.addAttr(el, "lower", String.valueOf(r.getA().doubleValue()));
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158 cr.addAttr(el, "upper", String.valueOf(r.getB().doubleValue()));
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159
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160 service.appendChild(el);
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161 }
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162
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163 doc.appendChild(service);
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164
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165 return doc;
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166 }
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167 }
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168 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org