Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/exports/DiagramAttributes.java @ 7059:f9d5020af0af generator-refactoring

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Remove AxisProcessor "glue" class and extend Processor interface
author Andre Heinecke <aheinecke@intevation.de>
date Fri, 20 Sep 2013 10:30:03 +0200
parents 165ea04b1545
children 78ded33f5f5b
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 private String name;
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32 private boolean isLeftAlign;
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33 private boolean forceAlign;
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34
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35 public AxisAttributes() {
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36 }
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37
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38 public AxisAttributes(
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39 String name,
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40 boolean isLeftAlign,
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41 boolean forceAlign
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42 ) {
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43 this.name = name;
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44 this.isLeftAlign = isLeftAlign;
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45 this.forceAlign = forceAlign;
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46 }
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47
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48 public String getName() {
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49 return name;
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50 }
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51
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52 public boolean isLeftAlign() {
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53 return isLeftAlign;
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54 }
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55
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56 public boolean forceAlign() {
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57 return forceAlign;
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58 }
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59 } // class AxisAttributes
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60
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61 public static class Argument {
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62 private String expression;
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63 private String type;
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64
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65 public Argument() {
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66 }
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67
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68 public Argument(String expression, String type) {
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69 this.expression = expression;
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70 this.type = type;
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71 }
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72
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73 public Object evaluate(D4EArtifact artifact, CallContext context) {
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74 if (expression.startsWith("artifact.")) {
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75 String value = artifact.getDataAsString(
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76 expression.substring("artifact.".length()));
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77 return convert(value);
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78 }
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79 if (expression.startsWith("context.")) {
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80 return context.getContextValue(
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81 expression.substring("context.".length()));
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82 }
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83 return expression;
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84 }
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85
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86 private Object convert(String value) {
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87 if (value == null || type == null) {
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88 return value;
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89 }
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90 if ("double".equals(type)) {
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91 return Double.valueOf(value);
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92 }
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93 if ("int".equals(type)) {
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94 return Integer.valueOf(value);
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95 }
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96 // TODO: more types
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97 return value;
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98 }
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99 } // class Argument
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100
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101 public static class Title {
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102
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103 private String key;
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104 private String def;
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105 private List<Argument> arguments;
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106
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107 public Title() {
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108 arguments = new ArrayList<Argument>(5);
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109 }
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110
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111 public Title(String key) {
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112 this(key, key);
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113 }
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114
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115 public Title(String key, String def) {
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116 this();
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117 this.key = key;
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118 this.def = def;
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119 }
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120
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121 public String getKey() {
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122 return key;
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123 }
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124
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125 public void addArgument(Argument argument) {
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126 arguments.add(argument);
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127 }
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128
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129 public String evalute(D4EArtifact artifact, CallContext context) {
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130 if (key == null || key.isEmpty()) {
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131 return def;
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132 }
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133 Object [] args = new Object[arguments.size()];
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134 for (int i = 0; i < args.length; ++i) {
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135 args[i] = arguments.get(i).evaluate(artifact, context);
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136 }
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137 return Resources.getMsg(context.getMeta(), key, def, args);
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138 }
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139 } // class Title
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140
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141 private List<AxisAttributes> axesAttrs;
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142 private List<Processor> processors;
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143
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144 private Title title;
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145 private Title subtitle;
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146
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147 public DiagramAttributes() {
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148 axesAttrs = new ArrayList<AxisAttributes>(5);
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149 processors = new ArrayList<Processor>(5);
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150 }
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151
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152 public DiagramAttributes(Element config) {
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153 this();
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154 parseAxis(config);
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155 parseProcessors(config);
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156 parseTitle(config);
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157 parseSubtitle(config);
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158 }
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159
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160 private void parseAxis(Element config) {
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161 NodeList axisNodes = config.getElementsByTagName("axis");
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162
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163 for (int i = 0, N = axisNodes.getLength(); i < N; ++i) {
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164 Element axisElement = (Element)axisNodes.item(i);
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165 String name = axisElement.getAttribute("name").trim();
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166 String align = axisElement.getAttribute("align").trim();
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167 if (name.isEmpty()) {
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168 continue;
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169 }
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170 boolean isleftAlign = false;
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171 boolean forceAlign = false;
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172 for (String part: align.split("[\\s,]")) {
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173 part = part.trim();
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174 if ("left" .equals(part)) isleftAlign = true;
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175 else if ("right".equals(part)) isleftAlign = false;
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176 else if ("force".equals(part)) forceAlign = true;
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177 }
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178 axesAttrs.add(new AxisAttributes(name, isleftAlign, forceAlign));
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179 }
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180 }
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181
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182 public List<Processor> getProcessors() {
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183 return processors;
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184 }
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185
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186 public Title getTitle() {
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187 return title;
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188 }
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189
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190 public Title getSubtitle() {
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191 return subtitle;
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192 }
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193
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194 private void parseProcessors(Element config) {
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195 NodeList processorNodes = config.getElementsByTagName("processor");
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196
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197 for (int i = 0, N = processorNodes.getLength(); i < N; ++i) {
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198 Element processorElement = (Element)processorNodes.item(i);
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199 String className = processorElement.getAttribute("class").trim();
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200 String axisName = processorElement.getAttribute("axis").trim();
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201 if (className.isEmpty() || axisName.isEmpty()) {
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202 continue;
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203 }
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204
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205 try {
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206 Processor processor =
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207 (Processor)Class.forName(className).newInstance();
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208 processor.setAxisName(axisName);
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209 processors.add(processor);
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210 }
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211 catch (ClassNotFoundException cnfe) {
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212 log.error(cnfe, cnfe);
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213 }
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214 catch (InstantiationException ie) {
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215 log.error(ie, ie);
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216 }
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217 catch (IllegalAccessException ia) {
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218 log.error(ia, ia);
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219 }
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220 catch (ClassCastException cce) {
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221 log.error(cce, cce);
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222 }
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223 }
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224 }
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225
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226 private void parseTitle(Element config) {
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227 title = extractTitle(config, "title");
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228 }
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229
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230 private void parseSubtitle(Element config) {
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231 subtitle = extractTitle(config, "subtitle");
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232 }
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233
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234 private static Title extractTitle(Element config, String tagName) {
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235 NodeList titleNodes = config.getElementsByTagName(tagName);
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236 if (titleNodes.getLength() < 1) {
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237 return null;
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238 }
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239 Element titleElement = (Element)titleNodes.item(0);
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240 String key = titleElement.getAttribute("key");
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241 String def = titleElement.getAttribute("default");
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242 Title title = new Title(key, def);
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243 NodeList argumentNodes = titleElement.getElementsByTagName("arg");
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244 for (int i = 0, N = argumentNodes.getLength(); i < N; ++i) {
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245 Element argumentElement = (Element)argumentNodes.item(i);
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246 String expression = argumentElement.getAttribute("expr");
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247 String type = argumentElement.getAttribute("type");
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248 title.addArgument(new Argument(expression, type));
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249 }
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250 return title;
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251 }
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252 }
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253 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org