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annotate flys-client/src/main/java/de/intevation/flys/client/server/FLYSArtifactCreator.java @ 1425:bc06a671ef60

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Removed the URL parameter from service calls. The service implementations read the URL from the web.xml config file now. flys-client/trunk@3367 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Raimund Renkert <raimund.renkert@intevation.de>
date Thu, 08 Dec 2011 09:12:27 +0000
parents ab8eb2f544f2
children f43862cc1e6e
rev   line source
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1 package de.intevation.flys.client.server;
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3 import java.util.ArrayList;
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4 import java.util.List;
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5
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6 import javax.xml.xpath.XPathConstants;
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8 import org.w3c.dom.Document;
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9 import org.w3c.dom.Element;
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10 import org.w3c.dom.NodeList;
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12 import org.apache.log4j.Logger;
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14 import de.intevation.artifacts.common.utils.XMLUtils;
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15 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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17 import de.intevation.artifacts.httpclient.utils.ArtifactCreator;
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19 import de.intevation.flys.client.shared.model.Artifact;
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20 import de.intevation.flys.client.shared.model.CalculationMessage;
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21 import de.intevation.flys.client.shared.model.DefaultArtifact;
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22 import de.intevation.flys.client.shared.model.WINFOArtifact;
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25 /**
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26 * An implementation of an {@link ArtifactCreator}. This class uses the document
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27 * that is returned by the artifact server to parse important information (like
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28 * uuid, hash) and returns a new {@link Artifact} instance.
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29 *
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30 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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31 */
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32 public class FLYSArtifactCreator implements ArtifactCreator {
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34 private static final Logger logger =
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35 Logger.getLogger(FLYSArtifactCreator.class);
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38 /** The XPath to the artifact's uuid.*/
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39 public static final String XPATH_UUID = "/art:result/art:uuid/@art:value";
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41 /** The XPath to the artifact's hash value.*/
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42 public static final String XPATH_HASH = "/art:result/art:hash/@art:value";
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44 /** The XPath to the artifact's name value.*/
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45 public static final String XPATH_NAME = "/art:result/art:name/@art:value";
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47 /** The XPath to the value that determines if the artifact is processing in
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48 * background.*/
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49 public static final String XPATH_BACKGROUND_VALUE =
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50 "/art:result/art:background-processing/@art:value";
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51
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52 /** The XPath that points to the (if existing) background messages.*/
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53 public static final String XPATH_BACKGROUND =
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54 "/art:result/art:background-processing";
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57 /**
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58 * Creates a new instance of an {@link ArtifactCreator}.
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59 */
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60 public FLYSArtifactCreator() {
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61 }
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62
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63
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64 /**
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65 * This concreate implementation returns an instance of {@link Artifact}
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66 * that is used in the FLYS GWT Client code.
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67 *
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68 * @param doc A document that describes the artifact that has been created
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69 * in the artifact server.
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70 *
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71 * @return an instance if {@link Artifact}.
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72 */
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73 public Object create(Document doc) {
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74 Artifact artifact = extractArtifact(doc);
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75 artifact.setArtifactDescription(
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76 ArtifactDescriptionFactory.createArtifactDescription(doc));
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78 return artifact;
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79 }
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82 /**
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83 * This method extracts the UUID und HASH information of the returned
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84 * artifact document.
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85 *
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86 * @param doc The result of the CREATE operation.
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87 *
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88 * @return an instance of an {@link Artifact}.
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89 */
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90 protected Artifact extractArtifact(Document doc) {
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91 logger.debug("FLYSArtifactCreator - extractArtifact()");
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93 String uuid = XMLUtils.xpathString(
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94 doc, XPATH_UUID, ArtifactNamespaceContext.INSTANCE);
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95
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96 String hash = XMLUtils.xpathString(
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97 doc, XPATH_HASH, ArtifactNamespaceContext.INSTANCE);
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98
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99 String name = XMLUtils.xpathString(
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100 doc, XPATH_NAME, ArtifactNamespaceContext.INSTANCE);
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101
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102 String backgroundStr = XMLUtils.xpathString(
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103 doc, XPATH_BACKGROUND_VALUE, ArtifactNamespaceContext.INSTANCE);
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104
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105 boolean background = false;
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106 if (backgroundStr != null && backgroundStr.length() > 0) {
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107 background = Boolean.valueOf(backgroundStr);
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108 }
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109
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110 List<CalculationMessage> msg = parseBackgroundMessages(doc);
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111
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112 logger.debug("NEW Artifact UUID: " + uuid);
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113 logger.debug("NEW Artifact HASH: " + hash);
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114 logger.debug("NEW Artifact NAME: " + name);
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115 logger.debug("NEW Artifact IN BACKGROUND: " + background);
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116
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117 if (name == null) {
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118 return new DefaultArtifact(uuid, hash, background, msg);
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119 }
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120
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121 name = name.trim();
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122
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123 if (name.length() > 0 && name.equals("winfo")) {
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124 logger.debug("+++++ NEW WINFO ARTIFACT.");
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125 return new WINFOArtifact(uuid, hash, background, msg);
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126 }
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127
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128 return new DefaultArtifact(uuid, hash, background, msg);
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129 }
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130
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131
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132 public static List<CalculationMessage> parseBackgroundMessages(Document d) {
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133 NodeList list = (NodeList) XMLUtils.xpath(
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134 d, XPATH_BACKGROUND, XPathConstants.NODESET,
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135 ArtifactNamespaceContext.INSTANCE);
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136
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137 int len = list != null ? list.getLength() : 0;
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138
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139 logger.debug("Found " + len + " background messages.");
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140
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141 List<CalculationMessage> res = new ArrayList<CalculationMessage>(len);
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142
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143 for (int i = 0; i < len; i++) {
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144 CalculationMessage msg = parseBackgroundMessage(
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145 (Element) list.item(i));
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146
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147 if (msg != null) {
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148 res.add(msg);
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149 }
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150 }
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151
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152 return res;
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153 }
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154
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155
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156 public static CalculationMessage parseBackgroundMessage(Element e) {
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157 String steps = e.getAttribute("art:steps");
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158 String currentStep = e.getAttribute("art:currentStep");
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159 String message = e.getTextContent();
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160
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161 int lenCurStep = currentStep != null ? currentStep.length() : 0;
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162 int lenSteps = steps != null ? steps.length() : 0;
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163 int lenMessage = message != null ? message.length() : 0;
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164
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165 if (lenSteps > 0 && lenMessage > 0 && lenCurStep > 0) {
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166 try {
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167 return new CalculationMessage(
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168 Integer.parseInt(steps),
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169 Integer.parseInt(currentStep),
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170 message);
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171
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172 }
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173 catch (NumberFormatException nfe) {
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174 nfe.printStackTrace();
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175 }
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176 }
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177
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178 return null;
14
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179 }
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180 }
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181 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org