Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/server/meta/Converter.java @ 286:0fa8bf8a2295

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Datacage: Better converter for incoming XML tree flys-client/trunk@1916 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Fri, 13 May 2011 09:06:13 +0000
parents
children 2e02db03e576
rev   line source
286
0fa8bf8a2295 Datacage: Better converter for incoming XML tree
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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
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8 import de.intevation.flys.client.shared.model.DataCageTree;
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9 import de.intevation.flys.client.shared.model.DataCageNode;
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10
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11 import java.util.List;
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12 import java.util.ArrayList;
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13 import java.util.Map;
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14 import java.util.HashMap;
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15
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16 public class Converter
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17 {
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18 public interface NodeConverter
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19 {
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20 DataCageNode convert(Element node, Converter converter);
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21
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22 } // interface NodeConverter
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23
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24 public static class NameConverter implements NodeConverter {
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25 public DataCageNode convert(Element node, Converter converter) {
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26 System.err.println("NameConverter called");
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27 DataCageNode out = new DataCageNode(node.getAttribute("name"));
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28 converter.convertChildren(out, node);
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29 return out;
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30 }
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31 } // class NameConverter
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32
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33 public static class I18NConverter implements NodeConverter {
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34 public DataCageNode convert(Element node, Converter converter) {
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35 System.err.println("I18NConverter called");
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36 DataCageNode out =
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37 new DataCageNode("${" + node.getLocalName() + "}");
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38 converter.convertChildren(out, node);
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39 return out;
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40 }
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41 } // I18NConverter
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42
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43 protected Map<String, NodeConverter> converters;
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44
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45 protected void convertChildren(DataCageNode parent, Element sub) {
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46 System.err.println("convertChildren called");
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47 NodeList children = sub.getChildNodes();
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48 for (int i = 0, N = children.getLength(); i < N; ++i) {
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49 Node child = children.item(i);
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50 if (child.getNodeType() == Node.ELEMENT_NODE) {
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51 String name = child.getLocalName();
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52 NodeConverter converter = converters.get(name);
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53 if (converter != null) {
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54 DataCageNode son = converter.convert(
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55 (Element)child, this);
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56 parent.addChild(son);
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57 }
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58 }
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59 } // for all children
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60 }
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61
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62 public Converter() {
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63 converters = new HashMap<String, NodeConverter>();
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64 registerConverters();
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65 }
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66
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67 protected void registerConverters() {
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68 System.err.println("register converters called");
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69 converters.put("datacage", new NameConverter());
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70 converters.put("river", new NameConverter());
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71 converters.put("gauge", new NameConverter());
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72 converters.put("historical", new NameConverter());
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73 converters.put("discharge-table-nn", new I18NConverter());
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74 converters.put("discharge-table-gauge", new I18NConverter());
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75 converters.put("fixations", new I18NConverter());
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76 converters.put("fixation", new I18NConverter());
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77 converters.put("columns", new I18NConverter());
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78 converters.put("column", new NameConverter());
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79 converters.put("flood-protections", new I18NConverter());
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80 converters.put("flood-protection", new I18NConverter());
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81 converters.put("flood-water-marks", new I18NConverter());
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82 converters.put("flood-water-mark", new I18NConverter());
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83 converters.put("water-levels", new I18NConverter());
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84 converters.put("water-level", new I18NConverter());
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85 converters.put("extra-longitudinal-sections", new I18NConverter());
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86 converters.put("extra-longitudinal-section", new I18NConverter());
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87 converters.put("longitudinal-section", new I18NConverter());
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88 }
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89
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90 public DataCageTree convert(Document document) {
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91 System.err.println("convert called");
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92
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93 ArrayList<DataCageNode> roots = new ArrayList<DataCageNode>();
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94 NodeList nodes = document.getChildNodes();
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95 for (int i = 0, N = nodes.getLength(); i < N; ++i) {
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96 Node node = nodes.item(i);
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97 if (node.getNodeType() == Node.ELEMENT_NODE) {
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98 System.err.println("search for name: " + node.getLocalName());
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99 NodeConverter converter = converters.get(node.getLocalName());
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100 if (converter != null) {
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101 roots.add(converter.convert((Element)node, this));
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102 }
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103 }
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104 }
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105 return roots.isEmpty()
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106 ? new DataCageTree()
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107 : new DataCageTree(roots.get(0));
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108 }
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109 }
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110 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org