Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/server/RiverInfoServiceImpl.java @ 4253:a1bc5b8cff0f

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Refactor GaugePanel to create it's own SectionStackSection The GaugePanel constructor now creates a SectionStackSection instead of using a provided one. Improve the rendering of the GaugePanel by having access to the SmartGWT wrapper (WidgetCanvas) object for the GWT Tree (GaugeTree) directly. Add methods to close and open the section. Also add a getter for the section.
author Björn Ricks <bjoern.ricks@intevation.de>
date Thu, 25 Oct 2012 13:52:58 +0200
parents ef154fbf58f1
children 06d9098a609a
rev   line source
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1 package de.intevation.flys.client.server;
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2
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3 import java.util.ArrayList;
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4 import java.util.List;
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5 import javax.xml.xpath.XPathConstants;
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6
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7 import org.apache.log4j.Logger;
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8
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9 import org.w3c.dom.Document;
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10 import org.w3c.dom.Element;
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11 import org.w3c.dom.NodeList;
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12
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13 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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14 import de.intevation.artifacts.common.utils.XMLUtils;
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15 import de.intevation.artifacts.httpclient.exceptions.ConnectionException;
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16 import de.intevation.artifacts.httpclient.http.HttpClient;
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17 import de.intevation.artifacts.httpclient.http.HttpClientImpl;
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18
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19 import de.intevation.flys.client.client.services.RiverInfoService;
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20 import de.intevation.flys.client.shared.exceptions.ServerException;
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21 import de.intevation.flys.client.shared.model.DefaultGaugeInfo;
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22 import de.intevation.flys.client.shared.model.DefaultMeasurementStation;
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23 import de.intevation.flys.client.shared.model.DefaultRiverInfo;
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24 import de.intevation.flys.client.shared.model.GaugeInfo;
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25 import de.intevation.flys.client.shared.model.MeasurementStation;
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26 import de.intevation.flys.client.shared.model.RiverInfo;
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27
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28
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29 /**
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30 * @author <a href="mailto:bjoern.ricks@intevation.de">Björn Ricks</a>
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31 */
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32 public class RiverInfoServiceImpl
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33 extends RemoteServiceServlet
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34 implements RiverInfoService
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35 {
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36 private static final Logger logger =
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37 Logger.getLogger(RiverInfoServiceImpl.class);
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38
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39 public static final String ERROR_NO_RIVER_INFO_FOUND =
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40 "error_no_riverinfo_found";
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41
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42 private static final String XPATH_RIVER =
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43 "/art:river-info/art:river";
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44
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45 private static final String XPATH_STATIONS =
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46 "/art:river-info/art:measurement-stations/art:measurement-station";
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47
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48 private static final String XPATH_GAUGES = "/art:river-info/art:gauges/art:gauge";
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49
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50 public RiverInfo getGauges(String river) throws ServerException {
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51 logger.info("RiverInfoServiceImpl.getRiverInfo");
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52
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53 String url = getServletContext().getInitParameter("server-url");
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54
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55 Document doc = XMLUtils.newDocument();
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56
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57 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator(
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58 doc,
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59 ArtifactNamespaceContext.NAMESPACE_URI,
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60 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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61
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62 Element riverele = ec.create("river");
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63 riverele.setTextContent(river);
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64
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65 doc.appendChild(riverele);
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66
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67 HttpClient client = new HttpClientImpl(url);
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68
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69 try {
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70 Document result = client.callService(url, "gaugeoverviewinfo", doc);
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71
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72 DefaultRiverInfo riverinfo = getRiverInfo(result);
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73 List<GaugeInfo>gauges = createGauges(result, riverinfo.getName(),
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74 riverinfo.isKmUp(), riverinfo.getWstUnit());
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75
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76
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77 riverinfo.setGauges(gauges);
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78
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79 logger.debug("Finished RiverInfoService.getGauges.");
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80
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81 return riverinfo;
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82 }
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83 catch (ConnectionException ce) {
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84 logger.error(ce, ce);
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85 }
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86
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87 logger.warn("No gauge found");
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88 throw new ServerException(ERROR_NO_RIVER_INFO_FOUND);
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89 }
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90
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91 public RiverInfo getMeasurementStations(String river) throws ServerException {
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92 logger.info("RiverInfoServiceImpl.getMeasurementStations");
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93
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94 String url = getServletContext().getInitParameter("server-url");
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95
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96 Document doc = XMLUtils.newDocument();
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97
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98 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator(
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99 doc,
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100 ArtifactNamespaceContext.NAMESPACE_URI,
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101 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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102
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103 Element riverele = ec.create("river");
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104 riverele.setTextContent(river);
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105
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106 doc.appendChild(riverele);
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107
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108 HttpClient client = new HttpClientImpl(url);
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109
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110 try {
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111 Document result = client.callService(url, "measurementstationinfo", doc);
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112
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113 DefaultRiverInfo riverinfo = getRiverInfo(result);
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114 List<MeasurementStation> mstations = createMeasurementStations(
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115 result, riverinfo.getName());
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116
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117 riverinfo.setMeasurementStations(mstations);
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118
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119 logger.debug("Finished MeasurementStationInfoService.");
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120
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121 return riverinfo;
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122 }
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123 catch (ConnectionException ce) {
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124 logger.error(ce, ce);
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125 }
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126
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127 logger.warn("No measurement station found");
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128 throw new ServerException(ERROR_NO_RIVER_INFO_FOUND);
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129 }
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130
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131 /**
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132 * Avoids NullPointerException when parsing double value
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133 */
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134 private Double parseDouble(String value) {
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135 if (value == null || value.isEmpty()) {
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136 return null;
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parents:
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137 }
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parents:
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138 try {
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parents:
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139 return Double.valueOf(value);
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parents:
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140 }
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parents:
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141 catch(NumberFormatException e) {
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142 logger.error(e, e);
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143 return null;
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parents:
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144 }
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145 }
3843
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146
8e169e4e1b57 Add the official gauge number to the GaugeInfo class
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147 private Long parseLong(String value) {
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148 if (value == null || value.isEmpty()) {
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149 return null;
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150 }
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151 try {
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152 return Long.valueOf(value);
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153 }
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diff changeset
154 catch(NumberFormatException e) {
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155 logger.error(e, e);
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156 return null;
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157 }
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158 }
4250
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159
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160 private List<MeasurementStation> createMeasurementStations(
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161 Document result, String rivername) {
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162 NodeList stationnodes = (NodeList) XMLUtils.xpath(
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163 result,
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164 XPATH_STATIONS,
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165 XPathConstants.NODESET,
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166 ArtifactNamespaceContext.INSTANCE);
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167
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168 int num = stationnodes == null ? 0 : stationnodes.getLength();
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169
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170 ArrayList<MeasurementStation> mstations = new ArrayList<MeasurementStation>(num);
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171
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172 if (num == 0) {
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173 logger.warn("No measurement station found.");
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174 }
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175 else {
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176 logger.debug("Found " + num + " measurement stations.");
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177
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178 for (int i = 0; i < num; i++) {
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179 Element stationele = (Element)stationnodes.item(i);
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180
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181 String mname = stationele.getAttributeNS(
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182 ArtifactNamespaceContext.NAMESPACE_URI, "name");
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183 String mstart = stationele.getAttributeNS(
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184 ArtifactNamespaceContext.NAMESPACE_URI, "start");
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185 String mend = stationele.getAttributeNS(
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186 ArtifactNamespaceContext.NAMESPACE_URI, "end");
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187 String mstation = stationele.getAttributeNS(
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188 ArtifactNamespaceContext.NAMESPACE_URI, "station");
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189 String mtype = stationele.getAttributeNS(
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diff changeset
190 ArtifactNamespaceContext.NAMESPACE_URI, "type");
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191 String riverside = stationele.getAttributeNS(
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diff changeset
192 ArtifactNamespaceContext.NAMESPACE_URI, "riverside");
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193
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194 logger.debug("Found measurement station with name " + mname);
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195
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196 MeasurementStation station = new DefaultMeasurementStation(
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197 rivername,
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198 mname,
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199 parseDouble(mstation),
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200 parseDouble(mstart),
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parents: 3974
diff changeset
201 parseDouble(mend),
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Björn Ricks <bjoern.ricks@intevation.de>
parents: 3974
diff changeset
202 riverside,
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diff changeset
203 mtype
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204 );
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
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diff changeset
205
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diff changeset
206 mstations.add(station);
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diff changeset
207 }
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diff changeset
208 }
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diff changeset
209 return mstations;
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diff changeset
210 }
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
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diff changeset
211
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diff changeset
212 private List<GaugeInfo> createGauges(
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diff changeset
213 Document result, String rivername, Boolean kmup, String rwstunit) {
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parents: 3974
diff changeset
214 NodeList gaugenodes = (NodeList) XMLUtils.xpath(
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parents: 3974
diff changeset
215 result,
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
Björn Ricks <bjoern.ricks@intevation.de>
parents: 3974
diff changeset
216 XPATH_GAUGES,
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parents: 3974
diff changeset
217 XPathConstants.NODESET,
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parents: 3974
diff changeset
218 ArtifactNamespaceContext.INSTANCE);
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
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diff changeset
219
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
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diff changeset
220 int num = gaugenodes == null ? 0 : gaugenodes.getLength();
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diff changeset
221
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
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parents: 3974
diff changeset
222 ArrayList<GaugeInfo> gauges = new ArrayList<GaugeInfo>(num);
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
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parents: 3974
diff changeset
223
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
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parents: 3974
diff changeset
224 if (num == 0) {
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diff changeset
225 logger.warn("No gauge info found.");
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parents: 3974
diff changeset
226 }
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diff changeset
227 else {
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
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diff changeset
228 logger.debug("Found " + num + " gauges.");
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diff changeset
229
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diff changeset
230 for (int i = 0; i < num; i++) {
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diff changeset
231 Element gaugeele = (Element)gaugenodes.item(i);
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diff changeset
232
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
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diff changeset
233 String gname = gaugeele.getAttributeNS(
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parents: 3974
diff changeset
234 ArtifactNamespaceContext.NAMESPACE_URI, "name");
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
Björn Ricks <bjoern.ricks@intevation.de>
parents: 3974
diff changeset
235 String gstart = gaugeele.getAttributeNS(
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parents: 3974
diff changeset
236 ArtifactNamespaceContext.NAMESPACE_URI, "start");
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
Björn Ricks <bjoern.ricks@intevation.de>
parents: 3974
diff changeset
237 String gend = gaugeele.getAttributeNS(
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parents: 3974
diff changeset
238 ArtifactNamespaceContext.NAMESPACE_URI, "end");
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
Björn Ricks <bjoern.ricks@intevation.de>
parents: 3974
diff changeset
239 String gdatum = gaugeele.getAttributeNS(
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
Björn Ricks <bjoern.ricks@intevation.de>
parents: 3974
diff changeset
240 ArtifactNamespaceContext.NAMESPACE_URI, "datum");
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
Björn Ricks <bjoern.ricks@intevation.de>
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diff changeset
241 String gaeo = gaugeele.getAttributeNS(
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
Björn Ricks <bjoern.ricks@intevation.de>
parents: 3974
diff changeset
242 ArtifactNamespaceContext.NAMESPACE_URI, "aeo");
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
Björn Ricks <bjoern.ricks@intevation.de>
parents: 3974
diff changeset
243 String gminq = gaugeele.getAttributeNS(
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Björn Ricks <bjoern.ricks@intevation.de>
parents: 3974
diff changeset
244 ArtifactNamespaceContext.NAMESPACE_URI, "minq");
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
Björn Ricks <bjoern.ricks@intevation.de>
parents: 3974
diff changeset
245 String gminw = gaugeele.getAttributeNS(
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Björn Ricks <bjoern.ricks@intevation.de>
parents: 3974
diff changeset
246 ArtifactNamespaceContext.NAMESPACE_URI, "minw");
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
Björn Ricks <bjoern.ricks@intevation.de>
parents: 3974
diff changeset
247 String gmaxq = gaugeele.getAttributeNS(
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
Björn Ricks <bjoern.ricks@intevation.de>
parents: 3974
diff changeset
248 ArtifactNamespaceContext.NAMESPACE_URI, "maxq");
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
Björn Ricks <bjoern.ricks@intevation.de>
parents: 3974
diff changeset
249 String gmaxw = gaugeele.getAttributeNS(
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
Björn Ricks <bjoern.ricks@intevation.de>
parents: 3974
diff changeset
250 ArtifactNamespaceContext.NAMESPACE_URI, "maxw");
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
Björn Ricks <bjoern.ricks@intevation.de>
parents: 3974
diff changeset
251 String gstation = gaugeele.getAttributeNS(
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
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diff changeset
252 ArtifactNamespaceContext.NAMESPACE_URI, "station");
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
Björn Ricks <bjoern.ricks@intevation.de>
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diff changeset
253 String gofficial = gaugeele.getAttributeNS(
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Björn Ricks <bjoern.ricks@intevation.de>
parents: 3974
diff changeset
254 ArtifactNamespaceContext.NAMESPACE_URI, "official");
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parents: 3974
diff changeset
255
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
Björn Ricks <bjoern.ricks@intevation.de>
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diff changeset
256 logger.debug("Found gauge with name " + gname);
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
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parents: 3974
diff changeset
257
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
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parents: 3974
diff changeset
258 GaugeInfo gaugeinfo = new DefaultGaugeInfo(
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
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parents: 3974
diff changeset
259 rivername,
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Björn Ricks <bjoern.ricks@intevation.de>
parents: 3974
diff changeset
260 gname,
ef154fbf58f1 Add method to get the MeasurementStations from the RiverInfoService
Björn Ricks <bjoern.ricks@intevation.de>
parents: 3974
diff changeset
261 kmup,
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Björn Ricks <bjoern.ricks@intevation.de>
parents: 3974
diff changeset
262 parseDouble(gstation),
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Björn Ricks <bjoern.ricks@intevation.de>
parents: 3974
diff changeset
263 parseDouble(gstart),
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Björn Ricks <bjoern.ricks@intevation.de>
parents: 3974
diff changeset
264 parseDouble(gend),
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Björn Ricks <bjoern.ricks@intevation.de>
parents: 3974
diff changeset
265 parseDouble(gdatum),
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Björn Ricks <bjoern.ricks@intevation.de>
parents: 3974
diff changeset
266 parseDouble(gaeo),
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267 parseDouble(gminq),
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268 parseDouble(gmaxq),
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269 parseDouble(gminw),
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270 parseDouble(gmaxw),
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271 rwstunit,
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272 parseLong(gofficial)
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273 );
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274
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275 gauges.add(gaugeinfo);
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276 }
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277 }
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278 return gauges;
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279 }
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280
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281 private DefaultRiverInfo getRiverInfo(Document result) {
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282 Element riverresp = (Element) XMLUtils.xpath(
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283 result,
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284 XPATH_RIVER,
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285 XPathConstants.NODE,
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286 ArtifactNamespaceContext.INSTANCE);
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287
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288 String rname = riverresp.getAttributeNS(
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289 ArtifactNamespaceContext.NAMESPACE_URI, "name");
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290 String rkmup = riverresp.getAttributeNS(
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291 ArtifactNamespaceContext.NAMESPACE_URI, "kmup");
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292 String rstart = riverresp.getAttributeNS(
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293 ArtifactNamespaceContext.NAMESPACE_URI, "start");
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294 String rend = riverresp.getAttributeNS(
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295 ArtifactNamespaceContext.NAMESPACE_URI, "end");
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296 String rwstunit = riverresp.getAttributeNS(
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297 ArtifactNamespaceContext.NAMESPACE_URI, "wstunit");
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298 String rminq = riverresp.getAttributeNS(
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299 ArtifactNamespaceContext.NAMESPACE_URI, "minq");
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300 String rmaxq = riverresp.getAttributeNS(
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301 ArtifactNamespaceContext.NAMESPACE_URI, "maxq");
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302 String rofficial = riverresp.getAttributeNS(
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303 ArtifactNamespaceContext.NAMESPACE_URI, "official");
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304
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305 logger.debug("River is " + rname);
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306
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307 boolean kmup = rkmup.equalsIgnoreCase("true");
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308 DefaultRiverInfo riverinfo = new DefaultRiverInfo(
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309 rname,
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310 kmup,
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311 parseDouble(rstart),
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312 parseDouble(rend),
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313 rwstunit,
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314 parseDouble(rminq),
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315 parseDouble(rmaxq),
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316 parseLong(rofficial)
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317 );
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318
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319 return riverinfo;
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320 }
3713
79ad33f41977 Implement a gauge service
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321 }
http://dive4elements.wald.intevation.org