Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/utils/MetaWriter.java @ 794:d0967fdee36f

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Repaired JavaDoc in Export package. gnv-artifacts/trunk@876 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 31 Mar 2010 12:18:03 +0000
parents c4156275c1e1
children 2cea76f1112e
rev   line source
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bb0aa1f81280 Added missing class MetaWriter from last commit.
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diff changeset
1 package de.intevation.gnv.utils;
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2
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3 import de.intevation.artifactdatabase.XMLUtils;
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4
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5 import de.intevation.artifacts.ArtifactNamespaceContext;
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6 import de.intevation.artifacts.CallContext;
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7
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8 import de.intevation.gnv.artifacts.context.GNVArtifactContext;
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9
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10 import de.intevation.gnv.wms.LayerInfo;
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11
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12 import java.io.File;
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13 import java.io.FileNotFoundException;
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14 import java.io.FileOutputStream;
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15 import java.io.IOException;
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16 import java.io.OutputStream;
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17
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18 import java.util.Date;
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19
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20 import org.apache.log4j.Logger;
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21
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22 import org.w3c.dom.Document;
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23 import org.w3c.dom.Element;
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24
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25 /**
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26 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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27 */
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28 public class MetaWriter {
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29
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30 private static Logger logger = Logger.getLogger(MetaWriter.class);
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31
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32 public static final String NODE_MAPSERVER = "mapserver";
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33 public static final String NODE_SERVER = "server";
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34 public static final String NODE_MAP = "map";
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35 public static final String NODE_TTL = "ttl";
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36
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37 public static final String META_FILE_NAME = "meta.xml";
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38 public static final String ISOLINES_NAME = "isolines.shp";
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39 public static final String POLYGON_NAME = "polygons.shp";
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40 public static final String LAYER_DATA_NAME = "data.shp";
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41
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42 public static final String CONTEXT_LAYER_TITLE = "wms.title";
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43
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44 private MetaWriter() {
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45 }
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46
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47 public static Document writeLayerMeta(CallContext context,
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48 String uuid,
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49 String path,
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50 String paramType,
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51 String layerType){
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52 Document meta = XMLUtils.newDocument();
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53 XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
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54 meta,
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55 ArtifactNamespaceContext.NAMESPACE_URI,
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56 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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57 Element root = creator.create("meta");
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58 meta.appendChild(root);
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59
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60 writeAbstractMeta(context, meta, root);
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61 writeLayerMeta(context, meta, root, uuid, paramType,layerType);
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62 boolean success = writeMetaFile(path, meta);
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63
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64 if (success){
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65 return meta;
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66 }else{
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67 return null;
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68 }
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69 }
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70
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71 public static Document writeHorizontalcrosssectionMeta(
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72 CallContext context,
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73 String uuid,
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74 String path,
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75 String paramType)
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76 {
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77 Document meta = XMLUtils.newDocument();
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78 XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
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79 meta,
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80 ArtifactNamespaceContext.NAMESPACE_URI,
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81 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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82
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83 Element root = creator.create("meta");
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84 meta.appendChild(root);
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85
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86 writeAbstractMeta(context, meta, root);
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87 writePolygonMeta(context, meta, root, uuid, path, paramType);
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88 writeIsolineMeta(context, meta, root, uuid, path, paramType);
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89
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90 boolean success = writeMetaFile(path, meta);
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91
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92 if (success){
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93 return meta;
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94 }else{
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95 return null;
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96 }
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97 }
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98
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99 /**
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100 * @param path
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101 * @param meta
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102 */
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103 private static boolean writeMetaFile(String path, Document meta) {
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104 try {
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105 File metaFile = new File(path, META_FILE_NAME);
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106
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107 if (metaFile.exists()) {
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108 logger.info("Delete old meta information file.");
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109 metaFile.delete();
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110 }
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111
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112 if (!metaFile.createNewFile() || !metaFile.canWrite()) {
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113 logger.error("Error while writing meta file: "+metaFile.toString());
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114 return false;
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115 }
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116
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117 OutputStream out = null;
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118 boolean success = false;
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119 try {
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120 out = new FileOutputStream(metaFile);
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121 success = XMLUtils.toStream(meta, out);
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122 }
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123 finally {
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124 if (out != null) {
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125 try { out.close(); }
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126 catch (IOException ioe) {}
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127 }
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128 }
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129
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130 if (!success && metaFile.exists()) {
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131 metaFile.delete();
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132 }
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133
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134 return success;
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135 }
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136 catch (FileNotFoundException fnfe) {
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137 logger.error(fnfe);
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138 return false;
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139 }
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140 catch (IOException ioe) {
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141 logger.error(ioe, ioe);
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142 return false;
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143 }
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144 }
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145
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146
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147 public static void writeAbstractMeta(
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148 CallContext callContext,
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149 Document document,
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150 Element meta
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151 ) {
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152 XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
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153 document,
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154 ArtifactNamespaceContext.NAMESPACE_URI,
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155 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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156
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157 GNVArtifactContext context =
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158 (GNVArtifactContext) callContext.globalContext();
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159
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160 String server = (String)
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161 context.get(GNVArtifactContext.MAPSERVER_SERVER_PATH_KEY);
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162
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163 String map = (String)
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164 context.get(GNVArtifactContext.MAPSERVER_MAP_PATH_KEY);
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165
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166 if (logger.isDebugEnabled()) {
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167 logger.debug("MAPSERVER PATH: " + server);
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168 logger.debug("MAP PATH: " + map);
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169 }
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170
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171 Element mapserver = creator.create(NODE_MAPSERVER);
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172 Element serverPath = creator.create(NODE_SERVER);
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173 Element mapPath = creator.create(NODE_MAP);
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174
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175 mapPath.setTextContent(map);
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176 serverPath.setTextContent(server);
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177
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178 mapserver.appendChild(serverPath);
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179 mapserver.appendChild(mapPath);
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180 meta.appendChild(mapserver);
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181 }
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182
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183 protected static void writeLayerMeta(
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184 CallContext callContext,
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185 Document document,
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186 Element meta,
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187 String uuid,
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188 String paramType,
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189 String layerType
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190 ) {
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191 XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
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192 document,
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193 ArtifactNamespaceContext.NAMESPACE_URI,
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194 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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195
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196 Long time = callContext.getTimeToLive();
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197 time = time != null ? time + new Date().getTime() : null;
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198 String ttl = time != null ? time.toString() : null;
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199
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200 logger.debug("Artifacts time to live: " + ttl);
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201
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202 Element layer = creator.create(LayerInfo.LAYER);
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203 Element model = creator.create(LayerInfo.LAYER_MODEL);
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204 Element name = creator.create(LayerInfo.LAYER_NAME);
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205 Element type = creator.create(LayerInfo.LAYER_TYPE);
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206 Element status = creator.create(LayerInfo.LAYER_STATUS);
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207 Element data = creator.create(LayerInfo.LAYER_DATA);
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208 Element timeToLive = creator.create(NODE_TTL);
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209
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210 model.setTextContent(paramType);
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211 name.setTextContent(uuid);
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212 type.setTextContent(layerType);
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213 status.setTextContent("OFF");
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214 data.setTextContent(LAYER_DATA_NAME);
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215 timeToLive.setTextContent(ttl);
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216
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217 layer.appendChild(model);
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218 layer.appendChild(name);
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219 layer.appendChild(type);
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220 layer.appendChild(status);
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221 layer.appendChild(data);
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222 layer.appendChild(timeToLive);
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223
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224 meta.appendChild(layer);
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225 }
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226
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227
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228 public static void writePolygonMeta(
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229 CallContext context,
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230 Document document,
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231 Element meta,
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232 String uuid,
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233 String path,
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234 String paramType
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235 ) {
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236 XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
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237 document,
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238 ArtifactNamespaceContext.NAMESPACE_URI,
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239 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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240
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241 Long time = context.getTimeToLive();
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242 time = time != null ? time + new Date().getTime() : null;
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243 String ttl = time != null ? time.toString() : null;
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244
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245 logger.debug("Artifacts time to live: " + ttl);
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246
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247 Element layer = creator.create(LayerInfo.LAYER);
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248 Element model = creator.create(LayerInfo.LAYER_MODEL);
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249 Element name = creator.create(LayerInfo.LAYER_NAME);
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250 Element title = creator.create(LayerInfo.LAYER_TITLE);
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251 Element type = creator.create(LayerInfo.LAYER_TYPE);
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252 Element status = creator.create(LayerInfo.LAYER_STATUS);
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253 Element data = creator.create(LayerInfo.LAYER_DATA);
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254 Element timeToLive = creator.create(NODE_TTL);
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255
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256 model.setTextContent(paramType);
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257 name.setTextContent(uuid);
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258 title.setTextContent(
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259 (String) context.getContextValue(CONTEXT_LAYER_TITLE));
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260 type.setTextContent("POLYGON");
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261 status.setTextContent("OFF");
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262 data.setTextContent(POLYGON_NAME);
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263 timeToLive.setTextContent(ttl);
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264
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265 layer.appendChild(model);
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266 layer.appendChild(name);
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267 layer.appendChild(title);
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268 layer.appendChild(type);
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269 layer.appendChild(status);
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270 layer.appendChild(data);
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271 layer.appendChild(timeToLive);
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272
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273 meta.appendChild(layer);
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274 }
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275
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276
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277 public static void writeIsolineMeta(
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278 CallContext context,
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279 Document document,
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280 Element meta,
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281 String uuid,
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282 String path,
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283 String paramType
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284 ) {
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285 XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
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286 document,
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287 ArtifactNamespaceContext.NAMESPACE_URI,
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288 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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289
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290 Long time = context.getTimeToLive();
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291 time = time != null ? time + new Date().getTime() : null;
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292 String ttl = time != null ? time.toString() : null;
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293
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294 logger.debug("Artifacts time to live: " + ttl);
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295
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296 Element layer = creator.create(LayerInfo.LAYER);
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297 Element model = creator.create(LayerInfo.LAYER_MODEL);
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298 Element name = creator.create(LayerInfo.LAYER_NAME);
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299 Element title = creator.create(LayerInfo.LAYER_TITLE);
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300 Element type = creator.create(LayerInfo.LAYER_TYPE);
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301 Element status = creator.create(LayerInfo.LAYER_STATUS);
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302 Element data = creator.create(LayerInfo.LAYER_DATA);
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303 Element timeToLive = creator.create(NODE_TTL);
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304
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305 model.setTextContent(paramType+"_isolines");
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306 name.setTextContent(uuid);
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307 title.setTextContent(
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308 (String) context.getContextValue(CONTEXT_LAYER_TITLE));
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309 type.setTextContent("LINE");
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310 status.setTextContent("OFF");
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311 data.setTextContent(ISOLINES_NAME);
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312 timeToLive.setTextContent(ttl);
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313
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314 layer.appendChild(model);
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315 layer.appendChild(name);
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316 layer.appendChild(title);
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317 layer.appendChild(type);
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318 layer.appendChild(status);
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319 layer.appendChild(data);
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320 layer.appendChild(timeToLive);
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321
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322 meta.appendChild(layer);
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323 }
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324 }
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325 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org