Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/MetaDataService.java @ 4173:7d4480c0e68e

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Allow users to select the current relevant discharge table in historical discharge table calculattion. In addition to this, the discharge tables in the helper panel displayed in the client is ordered in time.
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Thu, 18 Oct 2012 12:13:48 +0200
parents 5642a83420f2
children b70dedac4c7e
rev   line source
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1 package de.intevation.flys.artifacts.services;
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2
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3 import org.w3c.dom.Document;
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4
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5 import org.apache.log4j.Logger;
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6
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7 import java.util.Map;
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8 import java.util.HashMap;
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9
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10 import de.intevation.artifacts.Artifact;
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11 import de.intevation.artifacts.CallMeta;
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12 import de.intevation.artifacts.GlobalContext;
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13 import de.intevation.artifacts.ArtifactDatabase;
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14 import de.intevation.artifacts.ArtifactDatabaseException;
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15
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16 import de.intevation.artifacts.common.utils.XMLUtils;
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17 import de.intevation.artifacts.common.utils.StringUtils;
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18
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19 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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21 import de.intevation.flys.artifacts.datacage.Recommendations;
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22
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23 import de.intevation.flys.artifacts.FLYSArtifact;
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24
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25 public class MetaDataService
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26 extends FLYSService
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27 {
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28 private static Logger log = Logger.getLogger(MetaDataService.class);
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30 public static final String XPATH_ARTIFACT_ID = "/art:meta/art:artifact-id/@value";
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31 public static final String XPATH_USER_ID = "/art:meta/art:user-id/@value";
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32 public static final String XPATH_OUTS = "/art:meta/art:outs/@value";
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33 public static final String XPATH_PARAMETERS = "/art:meta/art:parameters/@value";
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34
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35 /** The global context key of the artifact database. */
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36 public static final String ARTIFACT_DATA_BASE_KEY =
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37 "global.artifact.database";
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38
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39 public MetaDataService() {
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40 }
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41
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42 @Override
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43 protected Document doProcess(
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44 Document data,
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45 GlobalContext globalContext,
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46 CallMeta callMeta
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47 ) {
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48 log.debug("MetaDataService.process");
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49
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50 String artifactId = XMLUtils.xpathString(
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51 data, XPATH_ARTIFACT_ID, ArtifactNamespaceContext.INSTANCE);
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52
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53 if (artifactId != null
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54 && (artifactId = artifactId.trim()).length() == 0) {
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55 artifactId = null;
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56 }
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57
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58 String userId = XMLUtils.xpathString(
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59 data, XPATH_USER_ID, ArtifactNamespaceContext.INSTANCE);
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61 if (userId != null
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62 && (userId = userId.trim()).length() == 0) {
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63 userId = null;
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64 }
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65
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66 String outs = XMLUtils.xpathString(
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67 data, XPATH_OUTS, ArtifactNamespaceContext.INSTANCE);
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68
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69 String parameters = XMLUtils.xpathString(
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70 data, XPATH_PARAMETERS, ArtifactNamespaceContext.INSTANCE);
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71
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72 return doService(
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73 artifactId, userId, outs, parameters, globalContext);
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74 }
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75
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76 protected static Map<String, Object> splitParameters(
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77 String parameters,
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78 Map<String, Object> data
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79 ) {
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80 if (parameters != null) {
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81 String [] parts = parameters.split("\\s*;\\s*");
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82 for (String part: parts) {
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83 String [] kv = part.split("\\s*:\\s*");
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84 if (kv.length < 2 || (kv[0] = kv[0].trim()).length() == 0) {
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85 continue;
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86 }
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87 String [] values = kv[1].split("\\s*,\\s*");
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88 data.put(kv[0], values.length == 1 ? values[0] : values);
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89 }
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90 }
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91 return data;
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92 }
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93
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94 protected Document doService(
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95 String artifactId,
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96 String userId,
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97 String outsString,
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98 String parameters,
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99 GlobalContext globalContext
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100 ) {
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101 Document result = XMLUtils.newDocument();
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102
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103 FLYSArtifact flysArtifact;
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104
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105 if (log.isDebugEnabled()) {
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106 log.debug("artifact : " + artifactId);
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107 log.debug("user : " + userId);
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108 log.debug("outs : " + outsString);
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109 log.debug("parameters: " + parameters);
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110 }
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111
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112 if (userId != null && !StringUtils.checkUUID(userId)) {
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113 log.warn("'" + userId + "' is not a UUID");
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114 return result;
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115 }
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116
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117 if (artifactId != null) {
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118 if (!StringUtils.checkUUID(artifactId)) {
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119 log.warn("'" + artifactId + "' is not a UUID");
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120 return result;
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121 }
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122
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123 Object dbObject =
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124 (ArtifactDatabase)globalContext.get(ARTIFACT_DATA_BASE_KEY);
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125
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126 if (!(dbObject instanceof ArtifactDatabase)) {
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127 log.error("Cannot find artifact database");
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128 return result;
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129 }
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130
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131 ArtifactDatabase db = (ArtifactDatabase)dbObject;
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132
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133 Artifact artifact;
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134
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135 try {
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136 artifact = db.getRawArtifact(artifactId);
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137 }
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138 catch (ArtifactDatabaseException adbe) {
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139 log.warn("fetching artifact failed", adbe);
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140 return result;
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141 }
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142
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143 if (!(artifact instanceof FLYSArtifact)) {
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144 log.warn("artifact is not a FLYS artifact.");
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145 return result;
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146 }
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147
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148 flysArtifact = (FLYSArtifact)artifact;
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149 }
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150 else {
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151 flysArtifact = null;
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152 }
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153
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154
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155 Map<String, Object> data = splitParameters(
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156 parameters, new HashMap<String, Object>());
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157
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158 String [] outs = outsString == null
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159 ? new String [0]
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160 : outsString.split("\\s*,\\s*");
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161
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162 Recommendations rec = Recommendations.getInstance();
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163 rec.recommend(
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164 flysArtifact, userId, outs, data, result);
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165
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166 return result;
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167 }
372
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168 }
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169 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org