Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/utils/MetaWriter.java @ 772:cd64ab8a46a7

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Put time to live of an artifact into meta document which is created while wms publishing (issue197). gnv-artifacts/trunk@829 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Fri, 26 Mar 2010 09:21:31 +0000
parents 452fad121560
children 5fb1ea68e19c
rev   line source
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1 package de.intevation.gnv.utils;
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2
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3 import java.io.File;
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4 import java.io.FileNotFoundException;
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5 import java.io.FileOutputStream;
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6 import java.io.IOException;
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7 import java.io.OutputStream;
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8 import java.util.Date;
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9
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10 import org.apache.log4j.Logger;
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11 import org.w3c.dom.Document;
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12 import org.w3c.dom.Element;
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13
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14 import de.intevation.artifactdatabase.XMLUtils;
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15 import de.intevation.artifacts.ArtifactNamespaceContext;
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16 import de.intevation.artifacts.CallContext;
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17 import de.intevation.gnv.artifacts.context.GNVArtifactContext;
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18 import de.intevation.gnv.wms.LayerInfo;
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19
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20 /**
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21 * @author Ingo Weinzierl (ingo.weinzierl@intevation.de)
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22 */
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23 public class MetaWriter {
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24
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25 private static Logger logger = Logger.getLogger(MetaWriter.class);
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26
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27 public static final String NODE_MAPSERVER = "mapserver";
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28 public static final String NODE_SERVER = "server";
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29 public static final String NODE_MAP = "map";
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30 public static final String NODE_TTL = "ttl";
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31
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32 public static final String META_FILE_NAME = "meta.xml";
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33 public static final String ISOLINES_NAME = "isolines.shp";
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34 public static final String POLYGON_NAME = "polygons.shp";
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35 public static final String LAYER_DATA_NAME = "data.shp";
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36
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37 public static final String CONTEXT_LAYER_TITLE = "wms.title";
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38
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39 private MetaWriter() {
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40 }
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41
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42 public static Document writeLayerMeta(CallContext context,
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43 String uuid,
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44 String path,
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45 String paramType,
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46 String layerType){
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47 Document meta = XMLUtils.newDocument();
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48 XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
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49 meta,
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50 ArtifactNamespaceContext.NAMESPACE_URI,
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51 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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52 Element root = creator.create("meta");
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53 meta.appendChild(root);
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54
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55 writeAbstractMeta(context, meta, root);
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56 writeLayerMeta(context, meta, root, uuid, paramType,layerType);
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57 boolean success = writeMetaFile(path, meta);
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58
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59 if (success){
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60 return meta;
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61 }else{
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62 return null;
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63 }
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64 }
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65
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66 public static Document writeHorizontalcrosssectionMeta(
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67 CallContext context,
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68 String uuid,
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69 String path,
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70 String paramType)
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71 {
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72 Document meta = XMLUtils.newDocument();
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73 XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
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74 meta,
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75 ArtifactNamespaceContext.NAMESPACE_URI,
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76 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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77
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78 Element root = creator.create("meta");
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79 meta.appendChild(root);
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80
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81 writeAbstractMeta(context, meta, root);
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82 writePolygonMeta(context, meta, root, uuid, path, paramType);
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83 writeIsolineMeta(context, meta, root, uuid, path, paramType);
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84
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85 boolean success = writeMetaFile(path, meta);
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86
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87 if (success){
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88 return meta;
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89 }else{
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90 return null;
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91 }
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92 }
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93
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94 /**
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95 * @param path
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96 * @param meta
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97 */
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98 private static boolean writeMetaFile(String path, Document meta) {
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99 try {
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100 File metaFile = new File(path, META_FILE_NAME);
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101
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102 if (metaFile.exists()) {
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103 logger.info("Delete old meta information file.");
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104 metaFile.delete();
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105 }
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106
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107 if (!metaFile.createNewFile() || !metaFile.canWrite()) {
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108 logger.error("Error while writing meta file: "+metaFile.toString());
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109 return false;
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110 }
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111
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112 OutputStream out = null;
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113 boolean success = false;
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114 try {
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115 out = new FileOutputStream(metaFile);
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116 success = XMLUtils.toStream(meta, out);
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117 }
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118 finally {
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119 if (out != null) {
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120 try { out.close(); }
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121 catch (IOException ioe) {}
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122 }
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123 }
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124
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125 if (!success && metaFile.exists()) {
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126 metaFile.delete();
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127 }
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128
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129 return success;
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130 }
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131 catch (FileNotFoundException fnfe) {
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132 logger.error(fnfe);
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133 return false;
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134 }
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135 catch (IOException ioe) {
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136 logger.error(ioe, ioe);
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137 return false;
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138 }
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139 }
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140
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141
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142 public static void writeAbstractMeta(
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143 CallContext callContext,
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144 Document document,
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145 Element meta
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146 ) {
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147 XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
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148 document,
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149 ArtifactNamespaceContext.NAMESPACE_URI,
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150 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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151
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152 GNVArtifactContext context =
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153 (GNVArtifactContext) callContext.globalContext();
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154
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155 String server = (String)
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156 context.get(GNVArtifactContext.MAPSERVER_SERVER_PATH_KEY);
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157
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158 String map = (String)
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159 context.get(GNVArtifactContext.MAPSERVER_MAP_PATH_KEY);
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160
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161 if (logger.isDebugEnabled()) {
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162 logger.debug("MAPSERVER PATH: " + server);
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163 logger.debug("MAP PATH: " + map);
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164 }
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165
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166 Element mapserver = creator.create(NODE_MAPSERVER);
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167 Element serverPath = creator.create(NODE_SERVER);
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168 Element mapPath = creator.create(NODE_MAP);
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169
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170 mapPath.setTextContent(map);
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171 serverPath.setTextContent(server);
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172
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173 mapserver.appendChild(serverPath);
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174 mapserver.appendChild(mapPath);
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175 meta.appendChild(mapserver);
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176 }
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177
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178 protected static void writeLayerMeta(
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179 CallContext callContext,
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180 Document document,
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181 Element meta,
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182 String uuid,
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183 String paramType,
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184 String layerType
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185 ) {
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186 XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
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187 document,
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188 ArtifactNamespaceContext.NAMESPACE_URI,
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189 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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190
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191 Long time = callContext.getTimeToLive();
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192 time += new Date().getTime();
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193 String ttl = time != null ? time.toString() : null;
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194
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195 logger.debug("Artifacts time to live: " + ttl);
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196
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197 Element layer = creator.create(LayerInfo.LAYER);
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198 Element model = creator.create(LayerInfo.LAYER_MODEL);
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199 Element name = creator.create(LayerInfo.LAYER_NAME);
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200 Element type = creator.create(LayerInfo.LAYER_TYPE);
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201 Element status = creator.create(LayerInfo.LAYER_STATUS);
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202 Element data = creator.create(LayerInfo.LAYER_DATA);
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203 Element timeToLive = creator.create(NODE_TTL);
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204
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205 model.setTextContent(paramType);
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206 name.setTextContent(uuid);
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207 type.setTextContent(layerType);
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208 status.setTextContent("OFF");
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209 data.setTextContent(LAYER_DATA_NAME);
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210 timeToLive.setTextContent(ttl);
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211
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212 layer.appendChild(model);
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213 layer.appendChild(name);
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214 layer.appendChild(type);
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215 layer.appendChild(status);
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216 layer.appendChild(data);
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217 layer.appendChild(timeToLive);
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218
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219 meta.appendChild(layer);
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220 }
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221
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222
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223 public static void writePolygonMeta(
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224 CallContext context,
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225 Document document,
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226 Element meta,
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227 String uuid,
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228 String path,
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229 String paramType
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230 ) {
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231 XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
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232 document,
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233 ArtifactNamespaceContext.NAMESPACE_URI,
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234 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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235
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236 Long time = context.getTimeToLive();
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237 time += new Date().getTime();
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238 String ttl = time != null ? time.toString() : null;
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239
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240 logger.debug("Artifacts time to live: " + ttl);
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241
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242 Element layer = creator.create(LayerInfo.LAYER);
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243 Element model = creator.create(LayerInfo.LAYER_MODEL);
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244 Element name = creator.create(LayerInfo.LAYER_NAME);
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245 Element title = creator.create(LayerInfo.LAYER_TITLE);
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246 Element type = creator.create(LayerInfo.LAYER_TYPE);
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247 Element status = creator.create(LayerInfo.LAYER_STATUS);
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248 Element data = creator.create(LayerInfo.LAYER_DATA);
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249 Element timeToLive = creator.create(NODE_TTL);
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250
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251 model.setTextContent(paramType);
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252 name.setTextContent(uuid);
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253 title.setTextContent(
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254 (String) context.getContextValue(CONTEXT_LAYER_TITLE));
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255 type.setTextContent("POLYGON");
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256 status.setTextContent("OFF");
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257 data.setTextContent(POLYGON_NAME);
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258 timeToLive.setTextContent(ttl);
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259
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260 layer.appendChild(model);
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261 layer.appendChild(name);
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262 layer.appendChild(title);
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263 layer.appendChild(type);
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264 layer.appendChild(status);
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265 layer.appendChild(data);
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266 layer.appendChild(timeToLive);
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267
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268 meta.appendChild(layer);
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269 }
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270
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271
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272 public static void writeIsolineMeta(
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273 CallContext context,
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274 Document document,
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275 Element meta,
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276 String uuid,
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277 String path,
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278 String paramType
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279 ) {
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280 XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
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281 document,
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282 ArtifactNamespaceContext.NAMESPACE_URI,
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283 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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284
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285 Long time = context.getTimeToLive();
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286 time += new Date().getTime();
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287 String ttl = time != null ? time.toString() : null;
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288
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289 logger.debug("Artifacts time to live: " + ttl);
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290
647
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291 Element layer = creator.create(LayerInfo.LAYER);
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292 Element model = creator.create(LayerInfo.LAYER_MODEL);
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293 Element name = creator.create(LayerInfo.LAYER_NAME);
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294 Element title = creator.create(LayerInfo.LAYER_TITLE);
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295 Element type = creator.create(LayerInfo.LAYER_TYPE);
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296 Element status = creator.create(LayerInfo.LAYER_STATUS);
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297 Element data = creator.create(LayerInfo.LAYER_DATA);
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298 Element timeToLive = creator.create(NODE_TTL);
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299
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300 model.setTextContent(paramType+"_isolines");
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301 name.setTextContent(uuid);
730
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302 title.setTextContent(
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303 (String) context.getContextValue(CONTEXT_LAYER_TITLE));
647
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304 type.setTextContent("LINE");
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305 status.setTextContent("OFF");
647
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306 data.setTextContent(ISOLINES_NAME);
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307 timeToLive.setTextContent(ttl);
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308
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309 layer.appendChild(model);
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310 layer.appendChild(name);
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311 layer.appendChild(title);
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312 layer.appendChild(type);
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313 layer.appendChild(status);
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314 layer.appendChild(data);
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315 layer.appendChild(timeToLive);
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316
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317 meta.appendChild(layer);
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318 }
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319 }
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320 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org