Mercurial > dive4elements > river
annotate flys-client/src/main/java/de/intevation/flys/client/server/meta/Converter.java @ 2950:192eddbbd4cf
Implement a login page to be able to authenticate a user
The username and password requested by the login.jsp are send to
the LoginServlet. The credentials are afterwards used to authenticate
the user against GGinA.
flys-client/trunk@4928 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Bjoern Ricks <bjoern.ricks@intevation.de> |
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date | Wed, 11 Jul 2012 10:37:10 +0000 |
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1 package de.intevation.flys.client.server.meta; |
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2 |
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3 import org.w3c.dom.Document; |
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4 import org.w3c.dom.Element; |
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5 import org.w3c.dom.Node; |
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6 import org.w3c.dom.NodeList; |
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7 import org.w3c.dom.Attr; |
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8 import org.w3c.dom.NamedNodeMap; |
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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 de.intevation.flys.client.shared.model.DataCageTree; |
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13 import de.intevation.flys.client.shared.model.DataCageNode; |
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14 import de.intevation.flys.client.shared.model.AttrList; |
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15 |
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16 import java.util.ArrayList; |
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17 import java.util.Map; |
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18 import java.util.HashMap; |
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19 |
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20 import de.intevation.artifacts.common.utils.XMLUtils; |
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21 |
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22 public class Converter |
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23 { |
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24 private static final Logger logger = Logger.getLogger(Converter.class); |
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25 |
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26 |
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27 public interface NodeConverter |
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28 { |
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29 DataCageNode convert(Element node, Converter converter); |
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30 |
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31 } // interface NodeConverter |
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32 |
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33 public static class NameConverter implements NodeConverter { |
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34 public DataCageNode convert(Element node, Converter converter) { |
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35 //System.err.println("NameConverter called"); |
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36 DataCageNode out = new DataCageNode( |
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37 node.getAttribute("name"), |
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38 toAttrList(node.getAttributes())); |
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39 converter.convertChildren(out, node); |
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40 return out; |
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41 } |
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42 } // class NameConverter |
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43 |
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44 public static class I18NConverter implements NodeConverter { |
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45 public DataCageNode convert(Element node, Converter converter) { |
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46 //System.err.println("I18NConverter called"); |
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47 |
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48 String name = node.getLocalName(); |
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49 String desc = node.hasAttribute("description") |
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50 ? node.getAttribute("description") |
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51 : "${" + name + "}"; |
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52 |
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53 DataCageNode out = |
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54 new DataCageNode(name, desc, toAttrList(node.getAttributes())); |
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55 |
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56 converter.convertChildren(out, node); |
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57 return out; |
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58 } |
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59 } // I18NConverter |
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60 |
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61 protected Map<String, NodeConverter> converters; |
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62 |
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63 protected void convertChildren(DataCageNode parent, Element sub) { |
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64 //System.err.println("convertChildren called"); |
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65 NodeList children = sub.getChildNodes(); |
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66 for (int i = 0, N = children.getLength(); i < N; ++i) { |
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67 Node child = children.item(i); |
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68 if (child.getNodeType() == Node.ELEMENT_NODE) { |
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69 String name = child.getLocalName(); |
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70 NodeConverter converter = converters.get(name); |
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71 if (converter == null) { |
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72 converter = I18N_CONVERTER; |
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73 } |
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74 DataCageNode son = converter.convert( |
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75 (Element)child, this); |
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76 parent.addChild(son); |
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77 } |
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78 } // for all children |
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79 } |
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80 |
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81 public Converter() { |
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82 converters = new HashMap<String, NodeConverter>(); |
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83 registerConverters(); |
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84 } |
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85 |
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86 public static final NodeConverter NAME_CONVERTER = new NameConverter(); |
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87 public static final NodeConverter I18N_CONVERTER = new I18NConverter(); |
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88 |
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89 protected void registerConverters() { |
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90 logger.debug("register converters called"); |
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91 converters.put("river", NAME_CONVERTER); |
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92 converters.put("gauge", NAME_CONVERTER); |
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93 converters.put("historical", NAME_CONVERTER); |
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94 converters.put("column", NAME_CONVERTER); |
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95 } |
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96 |
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97 public DataCageTree convert(Document document) { |
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98 logger.debug("convert called"); |
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99 //System.err.println(XMLUtils.toString(document)); |
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100 |
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101 ArrayList<DataCageNode> roots = new ArrayList<DataCageNode>(); |
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102 NodeList nodes = document.getChildNodes(); |
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103 for (int i = 0, N = nodes.getLength(); i < N; ++i) { |
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104 Node node = nodes.item(i); |
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105 if (node.getNodeType() == Node.ELEMENT_NODE) { |
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106 logger.debug("search for name: " + node.getLocalName()); |
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107 NodeConverter converter = converters.get(node.getLocalName()); |
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108 if (converter == null) { |
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109 converter = I18N_CONVERTER; |
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110 } |
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111 roots.add(converter.convert((Element)node, this)); |
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112 } |
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113 } |
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114 return roots.isEmpty() |
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115 ? new DataCageTree() |
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116 : new DataCageTree(roots.get(0)); |
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117 } |
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118 |
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119 public static AttrList toAttrList(NamedNodeMap nodeMap) { |
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120 if (nodeMap == null) { |
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121 return null; |
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122 } |
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123 int N = nodeMap.getLength(); |
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124 |
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125 if (N == 0) { |
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126 return null; |
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127 } |
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128 |
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129 AttrList result = new AttrList(N); |
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130 |
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131 for (int i = 0; i < N; ++i) { |
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132 Node node = nodeMap.item(i); |
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133 if (node.getNodeType() == Node.ATTRIBUTE_NODE) { |
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134 Attr attr = (Attr)node; |
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135 String key = attr.getName(); |
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136 String value = attr.getValue(); |
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137 result.add(key, value); |
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138 } |
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139 } |
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140 |
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141 return result; |
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142 } |
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143 } |
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144 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |