Mercurial > dive4elements > river

annotate gwt-client/src/main/java/org/dive4elements/river/client/server/FixingsOverviewServiceImpl.java @ 6867:0f3dad5d74a2

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Client: Removed an XPath eval and simplified a loop.
author Sascha L. Teichmann <teichmann@intevation.de>
date Mon, 19 Aug 2013 16:02:48 +0200
parents ea9eef426962
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.client.server;
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10
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11 import com.google.gwt.user.server.rpc.RemoteServiceServlet;
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12
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13 import org.dive4elements.artifacts.common.utils.XMLUtils;
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14 import org.dive4elements.artifacts.common.utils.XSLTransformer;
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15
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16 import org.dive4elements.artifacts.httpclient.exceptions.ConnectionException;
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17
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18 import org.dive4elements.artifacts.httpclient.http.HttpClient;
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19 import org.dive4elements.artifacts.httpclient.http.HttpClientImpl;
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20
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21 import org.dive4elements.river.client.client.services.FixingsOverviewService;
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22
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23 import org.dive4elements.river.client.shared.exceptions.ServerException;
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24
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25 import org.dive4elements.river.client.shared.model.FixingsOverviewInfo.FixEvent;
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26 import org.dive4elements.river.client.shared.model.FixingsOverviewInfo.Sector;
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27
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28 import org.dive4elements.river.client.shared.model.FixingsOverviewInfo;
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29
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30 import java.io.IOException;
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31 import java.io.InputStream;
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32
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33 import java.util.ArrayList;
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34 import java.util.List;
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35
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36 import org.apache.log4j.Logger;
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37
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38 import org.w3c.dom.Document;
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39 import org.w3c.dom.Element;
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40 import org.w3c.dom.NodeList;
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41
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42 public class FixingsOverviewServiceImpl
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43 extends RemoteServiceServlet
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44 implements FixingsOverviewService
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45 {
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46 private static final Logger log =
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47 Logger.getLogger(FixingsOverviewServiceImpl.class);
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48
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49 public static final String SERVICE_NAME = "fixings-overview";
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50
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51 public static final String XSL_TRANSFORM =
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52 "/WEB-INF/stylesheets/fixoverview2html.xsl";
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53
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54 protected static final String XPATH_RID = "/fixings/river/@rid";
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55 protected static final String XPATH_RIVER = "/fixings/river/@name";
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56 protected static final String XPATH_RFROM = "/fixings/river/@from";
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57 protected static final String XPATH_RTO = "/fixings/river/@to";
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58
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59 @Override
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60 public FixingsOverviewInfo generateOverview(
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61 String locale,
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62 String uuid,
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63 String filter,
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64 boolean checkboxes,
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65 String callback
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66 )
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67 throws ServerException
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68 {
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69 log.info("FixingsOverviewServiceImpl.doGet");
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70
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71 if (filter == null || filter.length() == 0) {
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72 log.warn("Missing 'filter' parameter.");
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73 return null;
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74 }
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75
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76 boolean debug = log.isDebugEnabled();
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77
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78 if (debug) {
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79 log.debug("JSON filter: ------------------");
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80 log.debug(filter);
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81 }
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82
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83 Document filterDoc = XMLUtils.jsonToXML(filter);
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84
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85 if (filterDoc == null) {
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86 log.warn("Creating filter document failed.");
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87 return null;
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88 }
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89
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90 if (debug) {
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91 log.debug("XML filter: ------------------");
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92 log.debug(XMLUtils.toString(filterDoc));
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93 }
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94
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95 try {
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96 String url = getServletContext().getInitParameter("server-url");
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97 HttpClient client = new HttpClientImpl(url, locale);
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98 Document resultDoc =
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99 client.callService(url, SERVICE_NAME, filterDoc);
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100
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101 if (debug) {
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102 log.debug("Result XML: -----------");
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103 log.debug(XMLUtils.toString(resultDoc));
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104 }
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105
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106 FixingsOverviewInfo i = getInfo(
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107 locale, resultDoc, uuid, checkboxes, callback);
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108 return i;
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109 }
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110 catch (ConnectionException ce) {
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111 log.error(ce);
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112 }
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113 return null;
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114 }
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115
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116
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117 protected FixingsOverviewInfo getInfo(
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118 String locale,
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119 Document doc,
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120 String uuid,
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121 boolean checkboxes,
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122 String callback
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123 ) {
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124 // TODO: Find a more general solution.
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125 locale = locale == null || locale.toLowerCase().startsWith("de")
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126 ? "de"
653dd9d7f5d5 FixA: Introduce i18n to overview transformation.
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127 : "en";
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128
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129 InputStream transform = getServletContext()
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130 .getResourceAsStream(XSL_TRANSFORM);
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131
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132 if (transform == null) {
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133 log.warn("transform not found");
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134 return null;
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135 }
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136
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137 String result = null;
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138 try {
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139 XSLTransformer xformer = new XSLTransformer();
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140 xformer.addParameter("locale", locale);
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141 xformer.addParameter("project-uuid", uuid);
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142 xformer.addParameter(
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143 "render-checkboxes",
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144 checkboxes ? Boolean.TRUE : Boolean.FALSE);
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145 xformer.addParameter("callback", callback);
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146 result = xformer.transform(doc, transform);
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147 }
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148 finally {
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149 try { transform.close(); }
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150 catch (IOException ioe) {}
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151 }
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152
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153 if (log.isDebugEnabled()) {
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154 log.debug("--------------------------------------");
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155 log.debug(result);
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156 log.debug("--------------------------------------");
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157 }
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158
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159 int rid = -1;
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160 double from = -1;
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161 double to = -1;
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162
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163 String rid_str = XMLUtils.xpathString(doc, XPATH_RID, null);
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164 String river = XMLUtils.xpathString(doc, XPATH_RIVER, null);
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165 String from_str = XMLUtils.xpathString(doc, XPATH_RFROM, null);
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166 String to_str = XMLUtils.xpathString(doc, XPATH_RTO, null);
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167
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168 try {
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169 rid = Integer.parseInt(rid_str);
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170 from = Double.parseDouble(from_str);
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171 to = Double.parseDouble(to_str);
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172 }
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173 catch(NumberFormatException nfe) {
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174 log.warn(nfe, nfe);
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175 }
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176
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177 List<FixEvent> fixEvents = getFixEvents(doc);
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178 return new FixingsOverviewInfo(
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179 rid,
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180 river,
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diff changeset
181 from,
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diff changeset
182 to,
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183 fixEvents,
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184 result);
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185 }
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186
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187
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188 protected List<FixEvent> getFixEvents(Document doc) {
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189 List<FixEvent> list = new ArrayList<FixEvent>();
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190
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191 NodeList events = doc.getElementsByTagName("event");
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192
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193 int E = events.getLength();
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194
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195 if (E == 0) {
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196 log.warn("No events in Overview!");
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197 return list;
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198 }
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199
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200 for (int i = 0; i < E; i++) {
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diff changeset
201 Element n = (Element)events.item(i);
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202 List<Sector> sectors = getSectors(n);
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203 String cid = n.getAttribute("cid");
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204 String date = n.getAttribute("date");;
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205 String name = n.getAttribute("description");
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diff changeset
206 list.add(new FixEvent( cid, date, name, sectors));
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207 }
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208 return list;
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209 }
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diff changeset
210
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diff changeset
211 protected List<Sector> getSectors(Element event) {
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diff changeset
212 NodeList sectors = event.getElementsByTagName("sector");
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diff changeset
213
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diff changeset
214 int S = sectors.getLength();
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diff changeset
215
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parents: 5993
diff changeset
216 if (S == 0) {
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diff changeset
217 log.warn("No Sectors in Event!");
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diff changeset
218 return null;
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diff changeset
219 }
87ac5c532523 First part of the UI for fixing analysis parameter.
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diff changeset
220
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diff changeset
221 List<Sector> list = new ArrayList<Sector>(S);
0f3dad5d74a2 Client: Removed an XPath eval and simplified a loop.
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parents: 5993
diff changeset
222 for (int i = 0; i < S; i++) {
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diff changeset
223 Element n = (Element)sectors.item(i);
d20f16a430a9 Removed some XPath misuse.
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diff changeset
224 int cls = -1;
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diff changeset
225 double from = -1;
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diff changeset
226 double to = -1;
d20f16a430a9 Removed some XPath misuse.
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parents: 2536
diff changeset
227 String cls_str = n.getAttribute("class");
d20f16a430a9 Removed some XPath misuse.
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diff changeset
228 String from_str = n.getAttribute("from");
d20f16a430a9 Removed some XPath misuse.
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parents: 2536
diff changeset
229 String to_str = n.getAttribute("to");
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diff changeset
230 try {
2915
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diff changeset
231 cls = Integer.parseInt(cls_str);
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parents: 2536
diff changeset
232 from = Double.parseDouble(from_str);
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diff changeset
233 to = Double.parseDouble(to_str);
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diff changeset
234 }
87ac5c532523 First part of the UI for fixing analysis parameter.
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parents: 2493
diff changeset
235 catch(NumberFormatException nfe) {
87ac5c532523 First part of the UI for fixing analysis parameter.
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diff changeset
236 log.warn(nfe, nfe);
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diff changeset
237 }
2915
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diff changeset
238 list.add(new Sector(cls, from, to));
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diff changeset
239 }
87ac5c532523 First part of the UI for fixing analysis parameter.
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diff changeset
240 return list;
2489
2a504b6d9a1b Added stub for fixings overview service.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
241 }
2a504b6d9a1b Added stub for fixings overview service.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
242 }
2a504b6d9a1b Added stub for fixings overview service.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
243 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org