Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/exports/DiagramAttributes.java @ 7048:a43137dfdcac generator-refactoring

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Simple interpolation logic for diagram titles and subtitles.
author Sascha L. Teichmann <teichmann@intevation.de>
date Thu, 19 Sep 2013 10:57:47 +0200
parents 599d3c48474c
children 165ea04b1545
rev   line source
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.exports;
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10
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11 import java.util.ArrayList;
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12 import java.util.List;
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13
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14 import org.w3c.dom.Element;
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15 import org.w3c.dom.NodeList;
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16
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17 import org.dive4elements.river.exports.process.Processor;
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18
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19 import org.apache.log4j.Logger;
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20
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21 import org.dive4elements.artifacts.CallContext;
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22
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23 import org.dive4elements.river.artifacts.resources.Resources;
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24 import org.dive4elements.river.artifacts.D4EArtifact;
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25
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26 public class DiagramAttributes
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27 {
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28 private static Logger log = Logger.getLogger(DiagramAttributes.class);
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29
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30 public static class AxisAttributes {
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31 // TODO: More Attributes
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32 private String name;
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33
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34 public AxisAttributes() {
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35 }
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36
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37 public AxisAttributes(String name) {
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38 this.name = name;
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39 }
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40
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41 public String getName() {
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42 return name;
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43 }
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44 } // class AxisAttributes
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45
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46 public static class AxisProcessor {
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47 private Processor processor;
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48 private String axisName;
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49
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50 public AxisProcessor() {
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51 }
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52
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53 public AxisProcessor(Processor processor, String axisName) {
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54 this.processor = processor;
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55 this.axisName = axisName;
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56 }
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57
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58 public Processor getProcessor() {
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59 return processor;
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60 }
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61
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62 public String getAxisName() {
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63 return axisName;
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64 }
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65 } // class AxisProcessor
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66
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67 public static class Argument {
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68 private String expression;
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69 private String type;
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70
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71 public Argument() {
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72 }
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73
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74 public Argument(String expression, String type) {
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75 this.expression = expression;
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76 this.type = type;
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77 }
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78
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79 public Object evaluate(D4EArtifact artifact, CallContext context) {
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80 if (expression.startsWith("artifact.")) {
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81 String value = artifact.getDataAsString(
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82 expression.substring("artifact.".length()));
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83 return convert(value);
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84 }
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85 if (expression.startsWith("context.")) {
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86 return context.getContextValue(
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87 expression.substring("context.".length()));
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88 }
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89 return expression;
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90 }
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91
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92 private Object convert(String value) {
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93 if (value == null || type == null) {
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94 return value;
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95 }
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96 if ("double".equals(type)) {
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97 return Double.valueOf(value);
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98 }
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99 if ("int".equals(type)) {
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100 return Integer.valueOf(value);
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101 }
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102 // TODO: more types
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103 return value;
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104 }
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105 } // class Argument
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106
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107 public static class Title {
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108
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109 private String key;
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110 private String def;
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111 private List<Argument> arguments;
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112
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113 public Title() {
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114 arguments = new ArrayList<Argument>(5);
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115 }
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116
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117 public Title(String key) {
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118 this(key, key);
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119 }
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120
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121 public Title(String key, String def) {
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122 this();
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123 this.key = key;
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124 this.def = def;
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125 }
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126
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127 public String getKey() {
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128 return key;
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129 }
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130
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131 public void addArgument(Argument argument) {
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132 arguments.add(argument);
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133 }
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134
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135 public String evalute(D4EArtifact artifact, CallContext context) {
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136 if (key == null || key.isEmpty()) {
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137 return def;
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138 }
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139 Object [] args = new Object[arguments.size()];
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140 for (int i = 0; i < args.length; ++i) {
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141 args[i] = arguments.get(i).evaluate(artifact, context);
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142 }
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143 return Resources.getMsg(context.getMeta(), key, def, args);
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144 }
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145 } // class Title
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146
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147 private List<AxisAttributes> axesAttrs;
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148 private List<AxisProcessor> axesProcessors;
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149
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150 private Title title;
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151 private Title subtitle;
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152
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153 public DiagramAttributes() {
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154 axesAttrs = new ArrayList<AxisAttributes>(5);
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155 axesProcessors = new ArrayList<AxisProcessor>(5);
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156 }
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157
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158 public DiagramAttributes(Element config) {
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159 this();
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160 parseAxis(config);
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161 parseProcessors(config);
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162 parseTitle(config);
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163 }
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164
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165 private void parseAxis(Element config) {
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166 NodeList axisNodes = config.getElementsByTagName("axis");
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167
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168 for (int i = 0, N = axisNodes.getLength(); i < N; ++i) {
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169 Element axisElement = (Element)axisNodes.item(i);
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170 String name = axisElement.getAttribute("name").trim();
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171 if (!name.isEmpty()) {
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172 axesAttrs.add(new AxisAttributes(name));
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173 }
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174 }
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175 }
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176
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177 public List<AxisProcessor> getAxesProcessors() {
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178 return axesProcessors;
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179 }
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180
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181 public Title getTitle() {
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182 return title;
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183 }
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184
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185 public Title getSubtitle() {
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186 return subtitle;
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187 }
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188
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189 private void parseProcessors(Element config) {
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190 NodeList processorNodes = config.getElementsByTagName("processor");
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191
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192 for (int i = 0, N = processorNodes.getLength(); i < N; ++i) {
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193 Element processorElement = (Element)processorNodes.item(i);
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194 String className = processorElement.getAttribute("class").trim();
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195 String axisName = processorElement.getAttribute("axis").trim();
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196 if (className.isEmpty() || axisName.isEmpty()) {
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197 continue;
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198 }
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199
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200 try {
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201 Processor processor =
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202 (Processor)Class.forName(className).newInstance();
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203 axesProcessors.add(new AxisProcessor(processor, axisName));
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204 }
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205 catch (ClassNotFoundException cnfe) {
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206 log.error(cnfe, cnfe);
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207 }
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208 catch (InstantiationException ie) {
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209 log.error(ie, ie);
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210 }
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211 catch (IllegalAccessException ia) {
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212 log.error(ia, ia);
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213 }
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214 catch (ClassCastException cce) {
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215 log.error(cce, cce);
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216 }
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217 }
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218 }
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219
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220 private void parseTitle(Element config) {
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221 title = extractTitle(config, "title");
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222 }
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223
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224 private void parseSubtitle(Element config) {
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225 subtitle = extractTitle(config, "subtitle");
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226 }
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227
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228 private static Title extractTitle(Element config, String tagName) {
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229 NodeList titleNodes = config.getElementsByTagName(tagName);
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230 if (titleNodes.getLength() < 1) {
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231 return null;
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232 }
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233 Element titleElement = (Element)titleNodes.item(0);
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234 String key = titleElement.getAttribute("key");
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235 String def = titleElement.getAttribute("default");
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236 Title title = new Title(key, def);
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237 NodeList argumentNodes = titleElement.getElementsByTagName("arg");
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238 for (int i = 0, N = argumentNodes.getLength(); i < N; ++i) {
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239 Element argumentElement = (Element)argumentNodes.item(i);
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240 String expression = argumentElement.getAttribute("expr");
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241 String type = argumentElement.getAttribute("type");
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242 title.addArgument(new Argument(expression, type));
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243 }
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244 return title;
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245 }
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246 }
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247 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org