Mercurial > mxd2map

annotate src/java/de/intevation/mxd/utils/MapToXMLUtils.java @ 306:ea3fde77ea48

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Catch generic Exceptions to avoid leaking them and creating silent errors
author Andre Heinecke <aheinecke@intevation.de>
date Thu, 06 Sep 2012 18:56:20 +0200
parents 10e0aa283217
children 1d77ea6a915d
rev   line source
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1 /*
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2 * Copyright (c) 2011 by Intevation GmbH, Germany <info@intevation.de>
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3 *
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4 * This file is part of MXD2map.
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5 *
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6 * This program is free software under the LGPL (>=v2.1)
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7 * Read the file LICENCE.txt coming with the software for details
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8 * or visit http://www.gnu.org/licenses/ if it does not exist.
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9 *
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10 * MXD2map has been developed on behalf of the
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11 * Bundesamt fuer Seeschifffahrt und Hydrographie (BSH) in Hamburg
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12 * by Intevation GmbH.
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13 *
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14 * Authors:
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15 * Raimund Renkert <raimund.renkert@intevation.de>
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16 * Bjoern Schilberg <bjoern.schilberg@intevation.de>
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17 * Stephan Holl <stephan.holl@intevation.de>
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18 */
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19
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20 package de.intevation.mxd.utils;
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21
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22 import org.apache.log4j.Logger;
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23
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24 import org.w3c.dom.Document;
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25 import org.w3c.dom.Element;
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26 import org.w3c.dom.NodeList;
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27 import org.w3c.dom.DOMException;
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28
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29 /**
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30 * Utility class to store map information in a XML structure.
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31 *
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32 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
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33 */
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34 public class MapToXMLUtils
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35 {
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36 /**
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37 * The logger.
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38 */
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39 private static final Logger logger = Logger.getLogger(MapToXMLUtils.class);
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40
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41 /**
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42 * Private member.
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43 */
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44 private Document root;
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45 private Element rootElement;
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46 private XMLUtils.ElementCreator creator;
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47
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48
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49 public MapToXMLUtils() {
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50 this.root = XMLUtils.newDocument();
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51 creator = new XMLUtils.ElementCreator(root, "", "");
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52 rootElement = creator.create("mxd");
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53 root.appendChild(rootElement);
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54 }
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55
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56 /**
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57 * Add the mxd filename to the dom.
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58 * @param path Path to the mxdfile.
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59 * @return Currently always true.
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60 */
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61 public boolean addFilename(String path) {
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62 Element file = creator.create("file");
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63 file.setAttribute("name", path);
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64 rootElement.appendChild(file);
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65 return true;
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66 }
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67
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68 /**
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69 * Create the top level map element.
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70 * @return The new map element.
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71 */
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72 public Element createMap()
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73 throws Exception {
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74 Element map;
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75 NodeList list = root.getElementsByTagName("map");
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76 if(list == null || list.getLength() == 0){
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77 map = creator.create("map");
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78 rootElement.appendChild(map);
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79 }
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80 else if(list.getLength() == 1){
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81 map = (Element)list.item(0);
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82 }
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83 else{
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84 throw new Exception("Error while creating map node.");
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85 }
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86 return map;
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87 }
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88
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89 /**
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90 * Add a layer element to the map.
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91 *
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92 * @return The layer element.
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93 */
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94 public Element addLayer()
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95 throws Exception {
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96 Element node = creator.create("layer");
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97 NodeList list = root.getElementsByTagName("map");
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98 if(list == null || list.getLength() == 0){
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99 throw new Exception("No map node found!");
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100 }
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101 else if(list.getLength() > 1) {
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102 throw new Exception("Found more than one map node." +
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103 " This should never happen!");
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104 }
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105 else {
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106 list.item(0).appendChild(node);
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107 return node;
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108 }
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109 }
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110
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111 /**
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112 * Remove a layer element from map.
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113 * @param layerElement The layer element.
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114 */
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115 public void removeLayer(Element layerElement) {
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116 NodeList list = root.getElementsByTagName("map");
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117 if(list == null || list.getLength() == 0){
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118 return;
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119 }
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120 else if(list.getLength() > 1) {
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121 return;
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122 }
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123 else {
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124 try {
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125 list.item(0).removeChild(layerElement);
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126 }
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127 catch(DOMException de) {
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128 return;
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129 }
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130 }
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131 }
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132
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133 /**
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134 * Add a renderer element to the map.
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135 * @param layer The parent layer element.
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136 * @return The renderer element.
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137 */
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138 public Element addRenderer(Element layer) {
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139 Element node = creator.create("renderer");
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140 layer.appendChild(node);
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141 return node;
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142 }
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143
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144 /**
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145 * Add a symbol element to the map.
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146 * @param renderer The parent renderer element.
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147 * @return The symbol element.
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148 */
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149 public Element addSymbol(Element renderer) {
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150 Element node = creator.create("symbol");
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151 renderer.appendChild(node);
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152 return node;
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153 }
180
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154
179
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155 /**
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156 * Add a label element to the map.
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157 * @param layer The parent layer element.
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158 * @return The label element.
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159 */
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160 public Element addLabel(Element layer) {
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161 Element node = creator.create("label");
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162 layer.appendChild(node);
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163 return node;
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164 }
31
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165
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166 /**
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167 * Print out the XML document.
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168 */
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169 public void print() {
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170 XMLUtils.toStream(root, System.out);
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171 }
38
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172
43
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173 /**
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174 * Get the DOM document.
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175 * @return The root document.
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176 */
38
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177 public Document getDocument() {
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178 return root;
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179 }
31
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180 }
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