Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/server/ChartServiceHelper.java @ 884:ace7e9cfbb7f

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Fixed some bugs that avoided datacage usage. flys-client/trunk@2718 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Tue, 13 Sep 2011 11:31:53 +0000
parents e74bf6bfeeb6
children 19f621663b7a
rev   line source
549
e74bf6bfeeb6 Use the same code to create the attribute document for the chart creation in ChartOutputService and ChartInfoService.
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1 package de.intevation.flys.client.server;
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2
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3 import java.util.Map;
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4
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5 import org.w3c.dom.Document;
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6 import org.w3c.dom.Element;
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7
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8 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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9 import de.intevation.artifacts.common.utils.XMLUtils;
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10 import de.intevation.artifacts.common.utils.XMLUtils.ElementCreator;
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11
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12
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13 /**
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14 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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15 */
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16 public class ChartServiceHelper {
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17
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18 /** The default chart width if no value is specified in the request.*/
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19 public static final int DEFAULT_CHART_WIDTH = 600;
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20
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21 /** The default chart height if no value is specified in the request.*/
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22 public static final int DEFAULT_CHART_HEIGHT = 400;
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23
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24
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25 private ChartServiceHelper() {
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26 }
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27
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28 /**
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29 * This method returns a document which might contain parameters to adjust
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30 * chart settings. The document is created using the information that are
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31 * contained in the request object.
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32 *
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33 * @param req The request document.
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34 *
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35 * @return a document to adjust chart settings.
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36 */
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37 protected static Document getChartAttributes(Map<String, String> req) {
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38 System.out.println("ChartServiceHelper.getChartAttributes");
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39
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40 Document doc = XMLUtils.newDocument();
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41
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42 ElementCreator ec = new ElementCreator(
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43 doc,
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44 ArtifactNamespaceContext.NAMESPACE_URI,
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45 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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46
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47 Element attributes = ec.create("attributes");
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48
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49 appendChartSize(req, attributes, ec);
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50 appendXRange(req, attributes, ec);
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51 appendYRange(req, attributes, ec);
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52
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53 doc.appendChild(attributes);
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54
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55 return doc;
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56 }
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57
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58
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59 /**
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60 * This method extracts the size (width/height) of a chart from request
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61 * object and append those values - if they exist - to the attribute
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62 * document used to adjust chart settings.
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63 *
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64 * @param req The request object that might contain the chart size.
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65 * @param attributes The attributes element used to adjust chart settings.
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66 * @param ec The ElementCreator that might be used to create new Elements.
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67 */
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68 protected static void appendChartSize(
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69 Map<String, String> req,
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70 Element attributes,
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71 ElementCreator ec)
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72 {
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73 System.out.println("ChartServiceHelper.appendChartSize");
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74
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75 Element size = ec.create("size");
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76
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77 String width = req.get("width");
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78 String height = req.get("height");
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79
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80 if (width == null || height == null) {
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81 width = String.valueOf(DEFAULT_CHART_WIDTH);
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82 height = String.valueOf(DEFAULT_CHART_HEIGHT);
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83 }
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84
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85 ec.addAttr(size, "width", width, true);
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86 ec.addAttr(size, "height", height, true);
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87
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88 attributes.appendChild(size);
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89 }
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90
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91
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92 /**
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93 * This method extracts the x range for the chart from request object and
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94 * appends those range - if it exists - to the attribute document used to
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95 * adjust the chart settings.
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96 *
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97 * @param req The request object that might contain the chart size.
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98 * @param doc The attribute document used to adjust chart settings.
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99 * @param ec The ElementCreator that might be used to create new Elements.
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100 */
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101 protected static void appendXRange(
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102 Map<String, String> req,
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103 Element attributes,
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104 ElementCreator ec)
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105 {
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106 System.out.println("ChartServiceHelper.appendXRange");
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107
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108 Element range = ec.create("xrange");
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109
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110 String from = req.get("minx");
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111 String to = req.get("maxx");
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112
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113 if (from != null && to != null) {
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114 ec.addAttr(range, "from", from, true);
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115 ec.addAttr(range, "to", to, true);
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116
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117 attributes.appendChild(range);
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118 }
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119 }
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120
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121
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122 /**
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123 * This method extracts the x range for the chart from request object and
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124 * appends those range - if it exists - to the attribute document used to
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125 * adjust the chart settings.
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126 *
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127 * @param req The request object that might contain the chart size.
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128 * @param doc The attribute document used to adjust chart settings.
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129 * @param ec The ElementCreator that might be used to create new Elements.
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130 */
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131 protected static void appendYRange(
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132 Map<String, String> req,
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133 Element attributes,
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134 ElementCreator ec)
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135 {
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136 System.out.println("ChartServiceHelper.appendYRange");
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137
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138 Element range = ec.create("yrange");
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139
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140 String from = req.get("miny");
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141 String to = req.get("maxy");
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142
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143 if (from != null && to != null) {
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144 ec.addAttr(range, "from", from, true);
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145 ec.addAttr(range, "to", to, true);
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146
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147 attributes.appendChild(range);
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148 }
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149 }
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150 }
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151 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org