Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/server/FixingsOverviewServiceImpl.java @ 4020:cc9b6f23eaf8

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Merged.
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Thu, 04 Oct 2012 09:58:36 +0200
parents 653dd9d7f5d5
children
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 com.google.gwt.user.server.rpc.RemoteServiceServlet;
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4
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5 import de.intevation.artifacts.common.utils.XMLUtils;
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6 import de.intevation.artifacts.common.utils.XSLTransformer;
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7
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8 import de.intevation.artifacts.httpclient.exceptions.ConnectionException;
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9
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10 import de.intevation.artifacts.httpclient.http.HttpClient;
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11 import de.intevation.artifacts.httpclient.http.HttpClientImpl;
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12
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13 import de.intevation.flys.client.client.services.FixingsOverviewService;
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14
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15 import de.intevation.flys.client.shared.exceptions.ServerException;
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16
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17 import de.intevation.flys.client.shared.model.FixingsOverviewInfo.FixEvent;
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18 import de.intevation.flys.client.shared.model.FixingsOverviewInfo.Sector;
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19
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20 import de.intevation.flys.client.shared.model.FixingsOverviewInfo;
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21
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22 import java.io.IOException;
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23 import java.io.InputStream;
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24
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25 import java.util.ArrayList;
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26 import java.util.List;
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27
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28 import javax.xml.xpath.XPathConstants;
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29
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30 import org.apache.log4j.Logger;
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31
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32 import org.w3c.dom.Document;
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33 import org.w3c.dom.Element;
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34 import org.w3c.dom.NodeList;
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35
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36 public class FixingsOverviewServiceImpl
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37 extends RemoteServiceServlet
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38 implements FixingsOverviewService
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39 {
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40 private static final Logger log =
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41 Logger.getLogger(FixingsOverviewServiceImpl.class);
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42
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43 public static final String SERVICE_NAME = "fixings-overview";
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44
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45 public static final String XSL_TRANSFORM =
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46 "/WEB-INF/stylesheets/fixoverview2html.xsl";
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47
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48 protected static final String XPATH_RID = "/fixings/river/@rid";
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49 protected static final String XPATH_RIVER = "/fixings/river/@name";
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50 protected static final String XPATH_RFROM = "/fixings/river/@from";
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51 protected static final String XPATH_RTO = "/fixings/river/@to";
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52
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53 protected static final String XPATH_EVENT = "/fixings/events/event";
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54
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55
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56 @Override
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57 public FixingsOverviewInfo generateOverview(
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58 String locale,
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59 String uuid,
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60 String filter,
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61 boolean checkboxes,
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62 String callback
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63 )
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64 throws ServerException
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65 {
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66 log.info("FixingsOverviewServiceImpl.doGet");
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67
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68 if (filter == null || filter.length() == 0) {
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69 log.warn("Missing 'filter' parameter.");
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70 return null;
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71 }
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72
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73 boolean debug = log.isDebugEnabled();
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74
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75 if (debug) {
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76 log.debug("JSON filter: ------------------");
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77 log.debug(filter);
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78 }
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79
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80 Document filterDoc = XMLUtils.jsonToXML(filter);
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81
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82 if (filterDoc == null) {
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83 log.warn("Creating filter document failed.");
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84 return null;
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85 }
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86
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87 if (debug) {
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88 log.debug("XML filter: ------------------");
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89 log.debug(XMLUtils.toString(filterDoc));
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90 }
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91
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92 try {
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93 String url = getServletContext().getInitParameter("server-url");
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94 HttpClient client = new HttpClientImpl(url, locale);
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95 Document resultDoc =
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96 client.callService(url, SERVICE_NAME, filterDoc);
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97
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98 if (debug) {
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99 log.debug("Result XML: -----------");
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100 log.debug(XMLUtils.toString(resultDoc));
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101 }
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102
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103 FixingsOverviewInfo i = getInfo(
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104 locale, resultDoc, uuid, checkboxes, callback);
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105 return i;
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106 }
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107 catch (ConnectionException ce) {
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108 log.error(ce);
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109 }
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110 return null;
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111 }
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112
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113
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114 protected FixingsOverviewInfo getInfo(
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115 String locale,
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116 Document doc,
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117 String uuid,
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118 boolean checkboxes,
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119 String callback
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120 ) {
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121 // TODO: Find a more general solution.
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122 locale = locale == null || locale.toLowerCase().startsWith("de")
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123 ? "de"
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124 : "en";
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125
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126 InputStream transform = getServletContext()
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127 .getResourceAsStream(XSL_TRANSFORM);
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128
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129 if (transform == null) {
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130 log.warn("transform not found");
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131 return null;
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132 }
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133
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134 String result = null;
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135 try {
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136 XSLTransformer xformer = new XSLTransformer();
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137 xformer.addParameter("locale", locale);
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138 xformer.addParameter("project-uuid", uuid);
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139 xformer.addParameter(
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140 "render-checkboxes",
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141 checkboxes ? Boolean.TRUE : Boolean.FALSE);
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142 xformer.addParameter("callback", callback);
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143 result = xformer.transform(doc, transform);
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144 }
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145 finally {
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146 try { transform.close(); }
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147 catch (IOException ioe) {}
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148 }
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149
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150 if (log.isDebugEnabled()) {
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151 log.debug("--------------------------------------");
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152 log.debug(result);
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153 log.debug("--------------------------------------");
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154 }
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155
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156 int rid = -1;
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157 double from = -1;
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158 double to = -1;
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159
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160 String rid_str = XMLUtils.xpathString(doc, XPATH_RID, null);
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161 String river = XMLUtils.xpathString(doc, XPATH_RIVER, null);
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162 String from_str = XMLUtils.xpathString(doc, XPATH_RFROM, null);
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163 String to_str = XMLUtils.xpathString(doc, XPATH_RTO, null);
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164
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165 try {
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166 rid = Integer.parseInt(rid_str);
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167 from = Double.parseDouble(from_str);
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168 to = Double.parseDouble(to_str);
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169 }
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170 catch(NumberFormatException nfe) {
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171 log.warn(nfe, nfe);
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172 }
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173
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174 List<FixEvent> fixEvents = getFixEvents(doc);
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175 return new FixingsOverviewInfo(
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176 rid,
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177 river,
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diff changeset
178 from,
653dd9d7f5d5 FixA: Introduce i18n to overview transformation.
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179 to,
653dd9d7f5d5 FixA: Introduce i18n to overview transformation.
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180 fixEvents,
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181 result);
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182 }
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183
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184
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185 protected List<FixEvent> getFixEvents(Document doc) {
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186 List<FixEvent> list = new ArrayList<FixEvent>();
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187
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188 NodeList events = (NodeList) XMLUtils.xpath(
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189 doc,
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190 XPATH_EVENT,
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191 XPathConstants.NODESET,
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192 null);
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193
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194 if (events == null || events.getLength() == 0) {
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195 log.warn("No events in Overview!");
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196 return list;
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197 }
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198
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199 for (int i = 0, E = events.getLength(); i < E; i++) {
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200 Element n = (Element)events.item(i);
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201 List<Sector> sectors = getSectors(n);
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202 String cid = n.getAttribute("cid");
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203 String date = n.getAttribute("date");;
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diff changeset
204 String name = n.getAttribute("description");
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diff changeset
205 list.add(new FixEvent( cid, date, name, sectors));
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206 }
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diff changeset
207 return list;
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diff changeset
208 }
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diff changeset
209
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diff changeset
210 protected List<Sector> getSectors(Element event) {
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diff changeset
211 NodeList sectors = event.getElementsByTagName("sector");
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diff changeset
212
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diff changeset
213 if (sectors.getLength() == 0) {
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diff changeset
214 log.warn("No Sectors in Event!");
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diff changeset
215 return null;
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216 }
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diff changeset
217
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diff changeset
218 List<Sector> list = new ArrayList<Sector>();
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diff changeset
219 for (int i = 0, S = sectors.getLength(); i < S; i++) {
d20f16a430a9 Removed some XPath misuse.
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parents: 2536
diff changeset
220 Element n = (Element)sectors.item(i);
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diff changeset
221 int cls = -1;
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diff changeset
222 double from = -1;
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diff changeset
223 double to = -1;
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parents: 2536
diff changeset
224 String cls_str = n.getAttribute("class");
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parents: 2536
diff changeset
225 String from_str = n.getAttribute("from");
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parents: 2536
diff changeset
226 String to_str = n.getAttribute("to");
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diff changeset
227 try {
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diff changeset
228 cls = Integer.parseInt(cls_str);
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parents: 2536
diff changeset
229 from = Double.parseDouble(from_str);
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diff changeset
230 to = Double.parseDouble(to_str);
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diff changeset
231 }
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diff changeset
232 catch(NumberFormatException nfe) {
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diff changeset
233 log.warn(nfe, nfe);
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diff changeset
234 }
2915
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diff changeset
235 list.add(new Sector(cls, from, to));
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diff changeset
236 }
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diff changeset
237 return list;
2489
2a504b6d9a1b Added stub for fixings overview service.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
238 }
2a504b6d9a1b Added stub for fixings overview service.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
239 }
2a504b6d9a1b Added stub for fixings overview service.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
240 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org