Mercurial > dive4elements > river

annotate flys-aft/src/main/java/de/intevation/aft/Sync.java @ 4707:2b0426b79a92

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Documentation.
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Wed, 19 Dec 2012 11:39:46 +0100
parents 06891562e633
children f939e1e6cfa4
rev   line source
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diff changeset
1 package de.intevation.aft;
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2
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3 import java.io.File;
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4
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5 import java.net.URL;
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6 import java.net.MalformedURLException;
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7
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8 import java.sql.SQLException;
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9
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10 import org.w3c.dom.Document;
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11 import org.w3c.dom.NodeList;
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12 import org.w3c.dom.Element;
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13
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14 import org.apache.log4j.Logger;
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15
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16 import javax.xml.xpath.XPathConstants;
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17
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18 import de.intevation.utils.XML;
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19
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20 import de.intevation.db.ConnectionBuilder;
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21
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22 public class Sync
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23 {
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24 private static Logger log = Logger.getLogger(Sync.class);
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25
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26 public static final String FLYS = "flys";
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27 public static final String AFT = "aft";
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28
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29 public static final String XPATH_DIPS = "/sync/dips/file/text()";
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30 public static final String XPATH_REPAIR = "/sync/dips/repair/text()";
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31
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32 public static final String XPATH_NOTIFICATIONS =
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33 "/sync/notifications/notification";
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34
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35 public static final String CONFIG_FILE =
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36 System.getProperty("config.file", "config.xml");
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37
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38 public static void sendNotifications(Document config) {
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39 NodeList notifications = (NodeList)XML.xpath(
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40 config, XPATH_NOTIFICATIONS, XPathConstants.NODESET, null, null);
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41
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42 if (notifications == null) {
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43 return;
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44 }
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45
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46 for (int i = 0, N = notifications.getLength(); i < N; ++i) {
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47 Element notification = (Element)notifications.item(i);
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48 String urlString = notification.getAttribute("url");
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49
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50 URL url;
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51 try {
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52 url = new URL(urlString);
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53 }
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54 catch (MalformedURLException mfue) {
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55 log.warn("NOTIFY: Invalid URL '" + urlString + "'. Ignored.", mfue);
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56 continue;
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57 }
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58
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59 Notification n = new Notification(notification);
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60
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61 Document result = n.sendPOST(url);
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62
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63 if (result != null) {
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64 log.info("Send notifcation to '" + urlString + "'.");
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65 log.info(XML.toString(result));
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66 }
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67 }
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68 }
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69
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70 public static void main(String [] args) {
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71
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72 File configFile = new File(CONFIG_FILE);
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73
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74 if (!configFile.isFile() || !configFile.canRead()) {
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75 log.error("cannot read config file");
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76 System.exit(1);
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77 }
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78
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79 Document config = XML.parseDocument(configFile, Boolean.FALSE);
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80
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81 if (config == null) {
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82 log.error("Cannot load config file.");
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83 System.exit(1);
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84 }
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85
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86 String dipsF = (String)XML.xpath(
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87 config, XPATH_DIPS, XPathConstants.STRING, null, null);
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88
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89 if (dipsF == null || dipsF.length() == 0) {
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90 log.error("Cannot find path to DIPS XML in config.");
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91 System.exit(1);
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92 }
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93
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94 File dipsFile = new File(dipsF);
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95
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96 if (!dipsFile.isFile() || !dipsFile.canRead()) {
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97 log.error("DIPS: Cannot find '" + dipsF + "'.");
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98 System.exit(1);
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99 }
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100
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101 Document dips = XML.parseDocument(dipsFile, Boolean.FALSE);
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102
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103 if (dips == null) {
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104 log.error("DIPS: Cannot load DIPS document.");
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105 System.exit(1);
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106 }
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107
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108 String repairF = (String)XML.xpath(
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109 config, XPATH_REPAIR, XPathConstants.STRING, null, null);
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110
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111 if (repairF != null && repairF.length() > 0) {
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112 File repairFile = new File(repairF);
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113 if (!repairFile.isFile() || !repairFile.canRead()) {
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114 log.warn("REPAIR: Cannot open DIPS repair XSLT file.");
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115 }
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116 else {
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117 Document fixed = XML.transform(dips, repairFile);
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118 if (fixed == null) {
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119 log.warn("REPAIR: Fixing DIPS failed.");
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120 }
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121 else {
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122 dips = fixed;
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123 }
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124 }
44dc38ca8492 Added an optional XSL transformation to fix the raw DIPS files.
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parents: 4077
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125 }
4090
d556e29592f5 Create new discharge tables if needed.
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126
d556e29592f5 Create new discharge tables if needed.
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127 int exitCode = 0;
4083
44dc38ca8492 Added an optional XSL transformation to fix the raw DIPS files.
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128
4073
2c70fae83d0c start syncing at river level.
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129 ConnectionBuilder aftConnectionBuilder =
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130 new ConnectionBuilder(AFT, config);
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131
4072
88f801888d85 load configuration an setup db connections.
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132 ConnectionBuilder flysConnectionBuilder =
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133 new ConnectionBuilder(FLYS, config);
88f801888d85 load configuration an setup db connections.
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134
4077
97de7a552b79 Load DIPS XML
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diff changeset
135 SyncContext syncContext = null;
4094
b20b710aa86f Bubble up modifications up to main().
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136
b20b710aa86f Bubble up modifications up to main().
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137 boolean modified = false;
4073
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diff changeset
138 try {
4077
97de7a552b79 Load DIPS XML
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139 syncContext = new SyncContext(
97de7a552b79 Load DIPS XML
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diff changeset
140 aftConnectionBuilder.getConnectedStatements(),
97de7a552b79 Load DIPS XML
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parents: 4075
diff changeset
141 flysConnectionBuilder.getConnectedStatements(),
97de7a552b79 Load DIPS XML
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diff changeset
142 dips);
4089
859b4781554a Prefetch existing time intervals from FLYS db.
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parents: 4083
diff changeset
143 syncContext.init();
4075
dbd0b3b1b8b8 Sync each river.
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diff changeset
144 Rivers rivers = new Rivers();
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b20b710aa86f Bubble up modifications up to main().
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145 modified = rivers.sync(syncContext);
4073
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146 }
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diff changeset
147 catch (SQLException sqle) {
4110
06891562e633 Extracted and documented the error messages of the process.
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148 log.error("SYNC: Syncing failed.", sqle);
4090
d556e29592f5 Create new discharge tables if needed.
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149 exitCode = 1;
4073
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150 }
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diff changeset
151 finally {
4077
97de7a552b79 Load DIPS XML
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diff changeset
152 if (syncContext != null) {
97de7a552b79 Load DIPS XML
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diff changeset
153 syncContext.close();
4075
dbd0b3b1b8b8 Sync each river.
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parents: 4073
diff changeset
154 }
4073
2c70fae83d0c start syncing at river level.
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parents: 4072
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155 }
4090
d556e29592f5 Create new discharge tables if needed.
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diff changeset
156
4095
da9df3641578 Send XML messages via HTTP POST around if the FLYS database has changed.
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diff changeset
157 if (modified) {
4104
cdcf98245e36 Commit/rollback changes if a gauge is only updated.
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parents: 4095
diff changeset
158 log.info("Modifications found.");
4095
da9df3641578 Send XML messages via HTTP POST around if the FLYS database has changed.
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diff changeset
159 sendNotifications(config);
da9df3641578 Send XML messages via HTTP POST around if the FLYS database has changed.
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160 }
4104
cdcf98245e36 Commit/rollback changes if a gauge is only updated.
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parents: 4095
diff changeset
161 else {
cdcf98245e36 Commit/rollback changes if a gauge is only updated.
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parents: 4095
diff changeset
162 log.info("No modifications found.");
cdcf98245e36 Commit/rollback changes if a gauge is only updated.
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parents: 4095
diff changeset
163 }
4095
da9df3641578 Send XML messages via HTTP POST around if the FLYS database has changed.
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parents: 4094
diff changeset
164
4090
d556e29592f5 Create new discharge tables if needed.
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diff changeset
165 if (exitCode != 0) {
d556e29592f5 Create new discharge tables if needed.
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parents: 4089
diff changeset
166 System.exit(1);
d556e29592f5 Create new discharge tables if needed.
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parents: 4089
diff changeset
167 }
4067
d5aed044ca0d Added AFT sync module.
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parents:
diff changeset
168 }
d5aed044ca0d Added AFT sync module.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
169 }
d5aed044ca0d Added AFT sync module.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
170 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org