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annotate flys-client/src/main/java/de/intevation/flys/client/server/ArtifactDescriptionFactory.java @ 52:1d0be51ab93b

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The DataList has a label now. flys-client/trunk@1508 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Thu, 17 Mar 2011 18:20:05 +0000
parents a2923d63f530
children f983d5ce6402
rev   line source
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f8a5f2c5e2b7 The DESCRIBE document returned by the artifact server is parsed after calling create() of the artifact service and a new Artifact is created with an ArtifactDescription that contains the UUID, HASH, und the current Data.
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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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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.Node;
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10 import org.w3c.dom.NodeList;
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12 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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13 import de.intevation.artifacts.common.utils.ClientProtocolUtils;
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14 import de.intevation.artifacts.common.utils.XMLUtils;
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16 import de.intevation.flys.client.shared.model.ArtifactDescription;
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17 import de.intevation.flys.client.shared.model.DataItem;
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18 import de.intevation.flys.client.shared.model.DataList;
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19 import de.intevation.flys.client.shared.model.DefaultArtifactDescription;
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20 import de.intevation.flys.client.shared.model.DefaultData;
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21 import de.intevation.flys.client.shared.model.DefaultDataItem;
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24 /**
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25 * This factory class helps creating an {@link ArtifactDescription} based on the
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26 * DESCRIBE document of an artifact returned by the artifact server. Use the
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27 * {@link createArtifactDescription(org.w3c.dom.Document)} method with the
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28 * DESCRIBE document to create such an {@link ArtifactDescription}.
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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 ArtifactDescriptionFactory {
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34 public static final String XPATH_STATE_NAME = "@art:name";
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35
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36 public static final String XPATH_UIPROVIDER = "@art:uiprovider";
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38 public static final String XPATH_REACHABLE_STATE = "art:state";
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40 public static final String XPATH_STATIC_STATE_NODE = "art:state";
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42 public static final String XPATH_STATIC_DATA_NODE = "art:data";
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44 public static final String XPATH_STATIC_ITEM_NODE = "art:item";
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46 /**
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47 * This method creates the {@link ArtifactDescription} of the DESCRIBE
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48 * document <i>doc</i>.
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49 *
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50 * @param doc A DESCRIBE document.
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51 *
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52 * @return the {@link ArtifactDescription}.
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53 */
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54 public static ArtifactDescription createArtifactDescription(Document doc) {
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55 System.out.println("ArtifactDescriptionFactory - create()");
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57 Node currentState = ClientProtocolUtils.getCurrentState(doc);
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58 Node staticNode = ClientProtocolUtils.getStaticUI(doc);
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59 Node dynamicNode = ClientProtocolUtils.getDynamicUI(doc);
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60 Node reachable = ClientProtocolUtils.getReachableStates(doc);
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62 String state = (String) XMLUtils.xpath(
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63 currentState,
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64 XPATH_STATE_NAME,
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65 XPathConstants.STRING,
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66 ArtifactNamespaceContext.INSTANCE);
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67 System.out.println("Current state name: " + state);
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69 DataList currentData = extractCurrentData(dynamicNode, state);
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70 DataList[] old = extractOldData(staticNode);
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71 String[] states = extractReachableStates(reachable);
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73 return new DefaultArtifactDescription(old, currentData, state, states);
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74 }
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77 /**
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78 * This method extracts the data that the user is able to enter in the
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79 * current state of the artifact.
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80 *
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81 * @param dynamicNode The dynamic node of the DESCRIBE document.
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82 * @param state The name of the current state.
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83 *
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84 * @return A {@link Data} object that represents the data which might be
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85 * entered by the user in the current state or null, if no data might be
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86 * entered.
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87 */
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88 protected static DataList extractCurrentData(Node dynamicNode, String state) {
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89 System.out.println("ArtifactDescriptionFactory - extractCurrentData()");
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90
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91 NodeList data = ClientProtocolUtils.getSelectNode(dynamicNode);
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92 String uiProvider = extractUIProvider(dynamicNode);
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93
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94 if (data == null || data.getLength() == 0) {
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95 return null;
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96 }
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97
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98 int dataNum = data.getLength();
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99 DataList list = new DataList(state, dataNum, uiProvider);
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100
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101 for (int i = 0; i < dataNum; i++) {
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102 Node d = data.item(i);
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103
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104 NodeList choices = ClientProtocolUtils.getItemNodes(d);
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105 String label = ClientProtocolUtils.getLabel(d);
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106 String name = XMLUtils.xpathString(
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107 d, "@art:name", ArtifactNamespaceContext.INSTANCE);
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108
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109 DataItem[] dataItems = extractCurrentDataItems(choices);
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110
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111 list.add(new DefaultData(name, label, null, dataItems));
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112 }
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113
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114 return list;
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115 }
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116
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117
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118 /**
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119 * This method extract the {@link DataItem}s of the DESCRIBE document.
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120 *
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121 * @param items The items in the DESCRIBE document.
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122 *
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123 * @return the {@link DataItem}s.
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124 */
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125 protected static DataItem[] extractCurrentDataItems(NodeList items) {
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126 System.out.println(
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127 "ArtifactDescriptionFactory - extractCurrentDataItems()");
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128
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129 if (items == null || items.getLength() == 0) {
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130 System.out.println("No data items found.");
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131 return null;
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132 }
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133
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134 int count = items.getLength();
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135
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136 List<DataItem> dataItems = new ArrayList<DataItem>(count);
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137
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138 for (int i = 0; i < count; i++) {
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139 Node item = items.item(i);
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140 String label = ClientProtocolUtils.getLabel(item);
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141 String value = ClientProtocolUtils.getValue(item);
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142
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143 dataItems.add(new DefaultDataItem(label, null, value));
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144 }
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145
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146 return (DataItem[]) dataItems.toArray(new DataItem[count]);
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147 }
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148
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149
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150 /**
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151 * This method extracts the data objects from the data node of the static ui
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152 * part of the DESCRIBE document.
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153 *
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154 * @param staticNode The static ui node of the DESCRIBE.
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155 *
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156 * @return the DataList objects.
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157 */
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158 protected static DataList[] extractOldData(Node staticNode) {
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159 System.out.println("ArtifactDescriptionFactory - extractOldData()");
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160
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161 NodeList stateNodes = (NodeList) XMLUtils.xpath(
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162 staticNode,
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163 XPATH_STATIC_STATE_NODE,
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164 XPathConstants.NODESET,
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165 ArtifactNamespaceContext.INSTANCE);
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166
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167 if (stateNodes == null || stateNodes.getLength() == 0) {
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168 System.out.println("No old items found.");
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169 return null;
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170 }
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171
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172 int count = stateNodes.getLength();
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173 DataList[] data = new DataList[count];
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174
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175 for (int i = 0; i < count; i++) {
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176 Node tmp = stateNodes.item(i);
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177
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178 String name = XMLUtils.xpathString(
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179 tmp, "@art:name", ArtifactNamespaceContext.INSTANCE);
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180 String uiprovider = XMLUtils.xpathString(
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181 tmp, "@art:uiprovider", ArtifactNamespaceContext.INSTANCE);
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182 String label = XMLUtils.xpathString(
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183 tmp, "@art:label", ArtifactNamespaceContext.INSTANCE);
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184
51
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185 NodeList dataNodes = (NodeList) XMLUtils.xpath(
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186 tmp,
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187 XPATH_STATIC_DATA_NODE,
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188 XPathConstants.NODESET,
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189 ArtifactNamespaceContext.INSTANCE);
34
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190
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191 if (dataNodes == null || dataNodes.getLength() == 0) {
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192 continue;
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193 }
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194
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195 int size = dataNodes.getLength();
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196 DataList list = new DataList(name, size, uiprovider, label);
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197
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198 for (int j = 0; j < size; j++) {
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199 Node dataNode = dataNodes.item(j);
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200
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201 String dName = XMLUtils.xpathString(
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202 dataNode, "@art:name", ArtifactNamespaceContext.INSTANCE);
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203 String dType = XMLUtils.xpathString(
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204 dataNode, "@art:type", ArtifactNamespaceContext.INSTANCE);
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205
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206 DataItem[] items = extractOldDataItems(dataNode);
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207
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208 list.add(new DefaultData(dName, dName, dType, items));
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209
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210 data[i] = list;
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211 }
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212 }
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213
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214 return data;
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215 }
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216
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217
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218 /**
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219 * This method extracts the data items from the data nodes that are placed
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220 * in the static ui part of the DESCRIBE document.
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221 *
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222 * @param dataNode A data node that contains items.
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223 *
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224 * @return a list of DataItems.
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225 */
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226 protected static DataItem[] extractOldDataItems(Node dataNode) {
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227 NodeList itemList = (NodeList) XMLUtils.xpath(
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228 dataNode,
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229 XPATH_STATIC_ITEM_NODE,
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230 XPathConstants.NODESET,
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231 ArtifactNamespaceContext.INSTANCE);
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232
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233 if (itemList == null || itemList.getLength() == 0) {
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234 System.out.println("No old data items found.");
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235 return null;
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236 }
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237
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238 int count = itemList.getLength();
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239
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240 DataItem[] items = new DataItem[count];
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241
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242 for (int i = 0; i < count; i++) {
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243 Node tmp = itemList.item(i);
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244
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245 String value = XMLUtils.xpathString(
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246 tmp, "@art:value", ArtifactNamespaceContext.INSTANCE);
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247
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248 // TODO extract the human readable value (description) from node
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249 items[i] = new DefaultDataItem(value, value, value);
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250 }
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251
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252 return items;
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253 }
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254
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255
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256 /**
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257 * This method extracts the UIProvider specified by the data node.
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258 *
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259 * @param data The data node.
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260 *
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261 * @return the UIProvider that is specified in the data node.
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262 */
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263 protected static String extractUIProvider(Node ui) {
22
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264 return (String) XMLUtils.xpath(
51
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265 ui,
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266 XPATH_UIPROVIDER,
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267 XPathConstants.STRING,
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268 ArtifactNamespaceContext.INSTANCE);
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269 }
32
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270
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271
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272 /**
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273 * This method extracts the reachable states of the current artifact.
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274 *
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275 * @param reachable The reachable states node.
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276 *
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277 * @return an array with identifiers of reachable states.
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278 */
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279 protected static String[] extractReachableStates(Node reachable) {
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280 System.out.println("ArtifactDescriptionFactory - extractReachableStates()");
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281
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282 NodeList list = (NodeList) XMLUtils.xpath(
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283 reachable,
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284 XPATH_REACHABLE_STATE,
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285 XPathConstants.NODESET,
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286 ArtifactNamespaceContext.INSTANCE);
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287
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288 if (list == null || list.getLength() == 0) {
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289 return null;
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290 }
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291
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292 int count = list.getLength();
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293
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294 String[] states = new String[count];
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295
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296 for (int i = 0; i < count; i++) {
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297 Node state = list.item(i);
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298
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299 String name = XMLUtils.xpathString(
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300 state, "@art:name", ArtifactNamespaceContext.INSTANCE);
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301
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302 states[i] = name;
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303 }
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304
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305 return states;
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diff changeset
306 }
16
f8a5f2c5e2b7 The DESCRIBE document returned by the artifact server is parsed after calling create() of the artifact service and a new Artifact is created with an ArtifactDescription that contains the UUID, HASH, und the current Data.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
307 }
f8a5f2c5e2b7 The DESCRIBE document returned by the artifact server is parsed after calling create() of the artifact service and a new Artifact is created with an ArtifactDescription that contains the UUID, HASH, und the current Data.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
308 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org