Mercurial > dive4elements > river
annotate flys-client/src/main/java/de/intevation/flys/client/server/DischargeInfoServiceImpl.java @ 4221:480de0dbca8e
Extended location input helper.
The locationpicker has now an attribute whether the input is distance or
location to display one or two clickable columns.
Replaced the record click handler with cell click handler.
author | Raimund Renkert <rrenkert@intevation.de> |
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date | Tue, 23 Oct 2012 13:17:20 +0200 |
parents | 67468c90ca68 |
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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 |
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6 import org.w3c.dom.Document; |
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7 import org.w3c.dom.Element; |
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8 import org.w3c.dom.NodeList; |
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9 |
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10 import org.apache.log4j.Logger; |
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11 |
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12 import com.google.gwt.user.server.rpc.RemoteServiceServlet; |
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13 |
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14 import de.intevation.artifacts.common.ArtifactNamespaceContext; |
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15 import de.intevation.artifacts.common.utils.XMLUtils; |
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16 |
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17 import de.intevation.artifacts.httpclient.exceptions.ConnectionException; |
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18 import de.intevation.artifacts.httpclient.http.HttpClient; |
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19 import de.intevation.artifacts.httpclient.http.HttpClientImpl; |
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20 |
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21 import de.intevation.flys.client.shared.exceptions.ServerException; |
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22 import de.intevation.flys.client.client.services.DischargeInfoService; |
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23 import de.intevation.flys.client.shared.model.DischargeInfoObject; |
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24 import de.intevation.flys.client.shared.model.DischargeInfoObjectImpl; |
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25 |
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26 |
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27 /** |
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28 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a> |
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29 */ |
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30 public class DischargeInfoServiceImpl |
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31 extends RemoteServiceServlet |
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32 implements DischargeInfoService |
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33 { |
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34 private static final Logger logger = |
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35 Logger.getLogger(DischargeInfoServiceImpl.class); |
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36 |
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37 public static final String ERROR_NO_DISCHARGEINFO_FOUND = |
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38 "error_no_dischargeinfo_found"; |
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39 |
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40 public static final String XPATH_DISTANCES = "art:discharges/art:discharge"; |
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41 |
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42 |
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43 public DischargeInfoObject[] getDischargeInfo( |
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44 String locale, |
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45 long gauge) |
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46 throws ServerException |
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47 { |
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48 logger.info("DichargeInfoServiceImpl.getDischargeInfo"); |
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49 |
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50 String url = getServletContext().getInitParameter("server-url"); |
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51 |
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52 Document doc = XMLUtils.newDocument(); |
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53 |
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54 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator( |
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55 doc, |
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56 ArtifactNamespaceContext.NAMESPACE_URI, |
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57 ArtifactNamespaceContext.NAMESPACE_PREFIX); |
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58 |
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59 Element gaugeEl = ec.create("gauge"); |
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60 gaugeEl.setTextContent(String.valueOf(gauge)); |
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61 |
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62 doc.appendChild(gaugeEl); |
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63 |
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64 HttpClient client = new HttpClientImpl(url, locale); |
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65 |
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66 try { |
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67 Document result = client.callService(url, "dischargeinfo", doc); |
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68 |
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69 logger.debug("Extract discharge info objects now."); |
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70 DischargeInfoObject[] objects = extractDischargeInfoObjects(result); |
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71 |
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72 if (objects != null && objects.length > 0) { |
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73 return objects; |
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74 } |
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75 } |
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76 catch (ConnectionException ce) { |
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77 logger.error(ce, ce); |
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78 } |
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79 |
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80 throw new ServerException(ERROR_NO_DISCHARGEINFO_FOUND); |
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81 } |
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82 |
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83 protected DischargeInfoObject[] extractDischargeInfoObjects( |
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84 Document result |
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85 ) |
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86 throws ServerException { |
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87 NodeList list = result.getElementsByTagName("discharge"); |
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88 |
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89 if (list == null || list.getLength() == 0) { |
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90 logger.warn("No discharge info found."); |
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91 throw new ServerException(ERROR_NO_DISCHARGEINFO_FOUND); |
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92 } |
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93 |
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94 int num = list.getLength(); |
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95 logger.debug("Response contains " + num + " objects."); |
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96 |
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97 List<DischargeInfoObject> objects = |
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98 new ArrayList<DischargeInfoObject>(num); |
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99 |
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100 for (int i = 0; i < num; i++) { |
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101 DischargeInfoObject obj = buildDischargeInfoObject( |
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102 (Element)list.item(i)); |
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103 |
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104 if (obj != null) { |
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105 objects.add(obj); |
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106 } |
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107 } |
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108 |
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109 logger.debug("Retrieved " + objects.size() + " discharges."); |
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110 |
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111 return (DischargeInfoObject[]) |
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112 objects.toArray(new DischargeInfoObject[num]); |
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113 |
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114 } |
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115 |
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116 protected DischargeInfoObject buildDischargeInfoObject(Element node) { |
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117 |
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118 String desc = node.getAttribute("description").trim(); |
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119 String start = node.getAttribute("start").trim(); |
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120 String end = node.getAttribute("end").trim(); |
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121 |
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122 if (start.length() > 0 && end.length() > 0) { |
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123 try { |
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124 Integer startYear = new Integer(start); |
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125 Integer endYear = new Integer(end); |
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126 return new DischargeInfoObjectImpl(desc, startYear, endYear); |
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127 } |
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128 catch (NumberFormatException nfe) { |
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129 logger.warn(nfe.getLocalizedMessage()); |
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130 } |
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131 } |
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132 |
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133 logger.warn("Invalid distance info object found."); |
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134 |
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135 return null; |
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136 } |
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137 } |
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138 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |