Mercurial > dive4elements > framework

annotate artifact-database/src/main/java/de/intevation/artifactdatabase/state/AbstractState.java @ 470:19cb9729bd17

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Added tag 3.0.1 for changeset c4cc49383cf8
author Andre Heinecke <aheinecke@intevation.de>
date Wed, 24 Apr 2013 17:35:46 +0200
parents 402cd5464723
children
rev   line source
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1 /*
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2 * Copyright (c) 2011 by Intevation GmbH
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3 *
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4 * This program is free software under the LGPL (>=v2.1)
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5 * Read the file LGPL.txt coming with the software for details
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6 * or visit http://www.gnu.org/licenses/ if it does not exist.
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7 */
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8 package de.intevation.artifactdatabase.state;
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9
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10 import java.util.ArrayList;
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11 import java.util.HashMap;
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12 import java.util.List;
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13 import java.util.Map;
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15 import javax.xml.xpath.XPathConstants;
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16
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17 import org.apache.log4j.Logger;
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18
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19 import org.w3c.dom.Document;
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20 import org.w3c.dom.Element;
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21 import org.w3c.dom.Node;
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22 import org.w3c.dom.NodeList;
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23
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24 import de.intevation.artifacts.Artifact;
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25 import de.intevation.artifacts.ArtifactNamespaceContext;
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26 import de.intevation.artifacts.CallContext;
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27 import de.intevation.artifacts.CallMeta;
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29 import de.intevation.artifacts.common.utils.Config;
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30 import de.intevation.artifacts.common.utils.XMLUtils;
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31
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32 import de.intevation.artifactdatabase.data.StateData;
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33
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34
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35 /**
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36 * An abstract implementation of a {@link State}. It implements some basic
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37 * methods that return the id, description and data. The methods
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38 * <code>describe()</code> and <code>setup()</code> depend on the concrete class
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39 * and need to be implemented by those.
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40 */
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41 public abstract class AbstractState implements State {
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42
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43 /** The XPath to the ID of the state relative to the state node in the
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44 * configuration. */
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45 public static final String XPATH_ID = "@id";
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46
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47 /** The XPath to the description of the state relative to the state node in
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48 * the configuration. */
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49 public static final String XPATH_DESCRIPTION = "@description";
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50
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51 /** The XPath that points to the help text.*/
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52 public static final String XPATH_HELP_TEXT = "@helpText";
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54 /** The XPath to the output nodes of the state configuration. */
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55 public static final String XPATH_OUTPUT_MODES = "outputmodes/outputmode";
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57 /** The XPath to the list of facets relative to the output mode it belongs
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58 * to. */
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59 public static final String XPATH_FACETS = "facets/facet";
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61 public static final String XPATH_HELP_URL = "/artifact-database/help-url/text()";
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63 public static final String HELP_URL = "${help.url}";
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66 /** The logger that is used in this class. */
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67 private static Logger logger = Logger.getLogger(AbstractState.class);
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70 /** The ID of the state. */
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71 protected String id;
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72
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73 /** The description of the state. */
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74 protected String description;
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75
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76 /** The help text for this state.*/
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77 protected String helpText;
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78
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79 /** The data provided by this state. */
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80 protected Map<String, StateData> data;
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81
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82 /** A list of output modes which are available for this state. */
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83 protected List<Output> outputs;
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85 private static String helpUrl;
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88 public AbstractState() {
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89 outputs = new ArrayList<Output>();
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90 }
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92 public static synchronized final String getHelpUrl() {
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93 if (helpUrl == null) {
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94 helpUrl = Config.getStringXPath(XPATH_HELP_URL, HELP_URL);
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95 }
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96 return helpUrl;
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97 }
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99 public static String replaceHelpUrl(String string) {
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100 return string.replace(HELP_URL, getHelpUrl());
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101 }
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104 /**
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105 * The default constructor.
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106 *
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107 * @param id The ID of the state.
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108 * @param description The description of the state.
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109 */
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110 public AbstractState(String id, String description) {
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111 super();
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112
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113 this.id = id;
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114 this.description = description;
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115 }
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118 public AbstractState(String id, String description, String helpText) {
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119 this(id, description);
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120 this.helpText = replaceHelpUrl(helpText);
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121 }
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124 /**
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125 * Returns the ID of the state.
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126 *
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127 * @return the ID of the state.
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128 */
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129 public String getID() {
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130 return id;
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131 }
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132
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133
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134 /**
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135 * Set the ID of the state.
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136 *
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137 * @param id The ID of the state.
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138 */
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139 public void setID(String id) {
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140 this.id = id;
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141 }
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142
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143
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144 /**
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145 * Returns the description of the state.
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146 *
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147 * @return the description of the state.
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148 */
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149 public String getDescription() {
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150 return description;
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151 }
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152
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153
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154 /**
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155 * Set the description of the state.
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156 *
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157 * @param description The description of the state.
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158 */
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159 public void setDescription(String description) {
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160 this.description = description;
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161 }
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162
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163
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164 /**
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165 * Returns the help text of this state.
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166 *
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167 * @return the help text.
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168 */
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169 public String getHelpText() {
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170 return helpText;
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171 }
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172
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173
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174 /**
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175 * Set the help text for this state.
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176 *
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177 * @param helpText The help text.
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178 */
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179 public void setHelpText(String helpText) {
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180 this.helpText = replaceHelpUrl(helpText);
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181 }
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182
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183
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184 /**
105
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185 * Returns the data of the state.
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186 *
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187 * @return the data of the state.
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188 */
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189 public Map<String, StateData> getData() {
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190 return data;
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191 }
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192
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193
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194 /**
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195 * Returns a specific data object of the state.
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196 *
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197 * @param name The name of the data object.
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198 *
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199 * @return a data object of the state or null if no such data object exists.
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200 */
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201 public StateData getData(String name) {
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202 if (data != null) {
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203 return data.get(name);
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204 }
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205
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206 return null;
256
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207 }
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208
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209
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210 /**
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211 * Add new data to the state. NOTE: If there is already an object existing
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212 * with the key <i>name</i>, this object is overwritten by the new value.
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213 *
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214 * @param name The name of the data object.
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215 * @param data The data object.
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216 */
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217 public void addData(String name, StateData data) {
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218 if (this.data == null) {
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219 this.data = new HashMap<String, StateData>();
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220 }
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221
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222 this.data.put(name, data);
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223 }
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224
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225
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226 /**
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227 * Returns the list of possible outputs of this state. The list is empty
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228 * if no output is available for this state.
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229 *
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230 * @return a list of possible outputs of this state.
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231 */
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232 public List<Output> getOutputs() {
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233 return outputs;
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234 }
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235
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236
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237 /**
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238 * Initialize the state based on the state node in the configuration.
105
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239 *
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240 * @param config The state configuration node.
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241 */
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242 public void setup(Node config) {
226
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243 logger.info("AbstractState.setup");
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244
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245 id = (String) XMLUtils.xpath(config, XPATH_ID, XPathConstants.STRING);
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246
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247 description = (String) XMLUtils.xpath(
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248 config, XPATH_DESCRIPTION, XPathConstants.STRING);
209
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249
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250 helpText = (String) XMLUtils.xpath(
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251 config, XPATH_HELP_TEXT, XPathConstants.STRING);
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252
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253 if (helpUrl != null) {
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254 helpUrl = replaceHelpUrl(helpUrl);
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255 }
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256
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257 setupOutputs(config);
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258 }
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259
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260
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261 /**
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262 * This default implementation does nothing at all.
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263 *
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264 * @param orig
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265 * @param owner
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266 * @param context
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267 * @param callMeta
363
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268 */
365
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269 public void initialize(
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270 Artifact orig,
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271 Artifact owner,
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272 Object context,
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273 CallMeta callMeta
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274 ) {
363
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275 // do nothing.
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276 }
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277
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278
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279 /**
209
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280 * This method tries reading the available output nodes configured in the
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281 * state configuration and adds possible Outputs to the outputs list.
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282 *
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283 * @param config The state configuration node.
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284 */
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285 protected void setupOutputs(Node config) {
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286 NodeList outs = (NodeList) XMLUtils.xpath(
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287 config,
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288 XPATH_OUTPUT_MODES,
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289 XPathConstants.NODESET,
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290 ArtifactNamespaceContext.INSTANCE);
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291
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292 if (outs == null || outs.getLength() == 0) {
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293 return;
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294 }
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295
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296 int size = outs.getLength();
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297
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298 for (int i = 0; i < size; i++) {
425
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299 addOutput(buildOutput(outs.item(i)));
209
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300 }
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301 }
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302
425
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303 /**
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304 * This methods allows subclasses to manually add outputs
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305 *
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306 * @param out The output to add
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307 */
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308 protected void addOutput(Output out) {
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309 outputs.add(out);
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310 }
209
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311
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312 /**
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313 * A helper method that creates an Output object based on the <i>out</i>
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314 * node.
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315 *
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316 * @param out The output node configuration.
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317 *
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318 * @return an Output object.
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319 */
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320 protected Output buildOutput(Node out) {
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321 String name = XMLUtils.xpathString(
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322 out, "@name", ArtifactNamespaceContext.INSTANCE);
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323
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324 String desc = XMLUtils.xpathString(
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325 out, "@description", ArtifactNamespaceContext.INSTANCE);
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326
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327 String mimetype = XMLUtils.xpathString(
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328 out, "@mime-type", ArtifactNamespaceContext.INSTANCE);
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329
290
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330 String type = XMLUtils.xpathString(
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331 out, "@type", ArtifactNamespaceContext.INSTANCE);
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332
226
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333 if (name == null) {
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334 return null;
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335 }
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336
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337 NodeList facets = (NodeList) XMLUtils.xpath(
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338 out,
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339 XPATH_FACETS,
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340 XPathConstants.NODESET,
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341 ArtifactNamespaceContext.INSTANCE);
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342
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343 if (facets == null || facets.getLength() == 0) {
290
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344 return new DefaultOutput(name, desc, mimetype, type);
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345 }
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346
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347 int num = facets.getLength();
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348
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349 List<Facet> facetList = new ArrayList<Facet>(num);
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350
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351 for (int i = 0; i < num; i++) {
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352 Facet facet = buildFacet(facets.item(i));
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353
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354 if (facet != null) {
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355 facetList.add(facet);
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356 }
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357 }
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358
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359 return new DefaultOutput(name, desc, mimetype, facetList, type);
226
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360 }
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361
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362
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363 /**
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364 * A helper method that creates a Facet object based on the <i>facet</i>
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365 * node.
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366 *
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367 * @param facet The facet node.
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368 *
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369 * @return a Facet object or null if no valid Facet was found.
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370 */
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371 protected Facet buildFacet(Node facet) {
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372 String name = XMLUtils.xpathString(
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373 facet, "@name", ArtifactNamespaceContext.INSTANCE);
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374
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375 String desc = XMLUtils.xpathString(
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376 facet, "@description", ArtifactNamespaceContext.INSTANCE);
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377
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378 return name != null ? new DefaultFacet(name, desc) : null;
106
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379 }
105
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380
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381
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382 /**
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383 * Describes the UI of the state. This method needs to be implemented by
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384 * concrete subclasses.
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385 *
244
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386 * @param artifact A reference to the artifact this state belongs to.
105
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387 * @param document Describe doucment.
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388 * @param rootNode Parent node for all new elements.
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389 * @param context The CallContext.
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390 * @param uuid The uuid of an artifact.
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391 */
205
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392 public abstract Element describe(
244
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393 Artifact artifact,
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394 Document document,
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395 Node rootNode,
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396 CallContext context,
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397 String uuid
265f150f4f7f Added an abstract implementation of a State.
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398 );
327
8a3ddd374dd1 Enhanced the State interface with an endOfLife() method.
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399
8a3ddd374dd1 Enhanced the State interface with an endOfLife() method.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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400
8a3ddd374dd1 Enhanced the State interface with an endOfLife() method.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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401 @Override
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402 public void endOfLife(Artifact artifact, Object context) {
8a3ddd374dd1 Enhanced the State interface with an endOfLife() method.
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403 // nothing to do here
8a3ddd374dd1 Enhanced the State interface with an endOfLife() method.
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404 }
105
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405 }
265f150f4f7f Added an abstract implementation of a State.
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406 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org