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annotate artifact-database/src/main/java/de/intevation/artifactdatabase/ProtocolUtils.java @ 212:d7042094f7b7

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Bugfix: Repaired a broken XPath. artifacts/trunk@1548 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 23 Mar 2011 12:08:21 +0000
parents 435631e07da2
children 4bb6bfaca393
rev   line source
107
39d9391059bd Added a ProtocolUtils class that provides functions that help creating the artifact protocol documents.
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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;
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9
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10 import java.util.List;
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11
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12 import org.w3c.dom.Element;
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13
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14 import de.intevation.artifacts.common.utils.XMLUtils;
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15
211
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16 import de.intevation.artifactdatabase.state.Output;
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17 import de.intevation.artifactdatabase.state.State;
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18
107
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19
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20 /**
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21 * This class provides methods that help creating the artifact protocol
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22 * documents describe, feed, advance and out.
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23 *
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24 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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25 */
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26 public class ProtocolUtils {
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27
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28 /**
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29 * It should not be necessary to create instances of this class.
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30 */
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31 private ProtocolUtils() {}
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32
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33
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34 /**
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35 * This method creates a node that might be used for the artifact protocol.
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36 *
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37 * @param creator The ElementCreator that is used to create the node.
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38 * @param nodeName The node name.
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39 * @param attrName The names of optional attributes.
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40 * @param value The values for the optional attributes.
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41 *
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42 * @return the created node.
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43 */
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44 public static Element createArtNode(
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45 XMLUtils.ElementCreator creator,
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46 String nodeName, String[] attrName, String[] value)
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47 {
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48 Element typeNode = creator.create(nodeName);
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49
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50 if (attrName != null && value != null) {
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51 for (int i = 0; i < attrName.length; i++) {
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52 if (i < value.length) {
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53 creator.addAttr(typeNode, attrName[i], value[i], true);
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54 }
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55 else {
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56 break;
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57 }
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58 }
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59 }
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60
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61 return typeNode;
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62 }
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63
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64
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65 /**
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66 * This method creates the root node for all artifact protocol documents.
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67 *
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68 * @param creator The ElementCreator used to create new elements.
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69 *
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70 * @return the root node for the artifact protocol document.
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71 */
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72 public static Element createRootNode(XMLUtils.ElementCreator creator) {
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73 return createArtNode(creator, "result", null, null);
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74 }
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75
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76
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77 /**
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78 * This method appends the three necessary nodes <i>type</i>, <i>uuid</i>
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79 * and <i>hash</i> of the describe document to <i>root</i> node.
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80 *
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81 * @param creator The ElementCreator that is used to create new nodes.
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82 * @param root The root node of the describe document.
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83 * @param uuid The UUID of the artifact.
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84 * @param hash The hash if the artifact.
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85 */
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86 public static void appendDescribeHeader(
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87 XMLUtils.ElementCreator creator, Element root, String uuid, String hash)
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88 {
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89 root.appendChild(createArtNode(
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90 creator,
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91 "type",
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92 new String[] {"name"},
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93 new String[] {"describe"}));
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94
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95 root.appendChild(createArtNode(
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96 creator,
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97 "uuid",
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98 new String[] {"value"},
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99 new String[] {uuid}));
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100
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101 root.appendChild(createArtNode(
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102 creator,
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103 "hash",
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104 new String[] {"value"},
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105 new String[] {hash}));
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106 }
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107
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108
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109 /**
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110 * This method appends a node that describes the current state to
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111 * <i>root</i>.
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112 *
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113 * @param creator The ElementCreator used to create new elements.
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114 * @param root The parent node for new elements.
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115 * @param state The state to be appended.
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116 */
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117 public static void appendState(
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118 XMLUtils.ElementCreator creator, Element root, State state)
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119 {
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120 root.appendChild(createArtNode(
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121 creator, "state",
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122 new String[] { "description", "name" },
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123 new String[] { state.getDescription(), state.getID() }));
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124 }
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125
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126
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127 /**
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128 * This method appends a node with reachable states to <i>root</i>.
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129 *
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130 * @param creator The ElementCreator used to create new elements.
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131 * @param root The parent node for new elements.
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132 * @param states The reachable states to be appended.
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133 */
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134 public static void appendReachableStates(
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135 XMLUtils.ElementCreator creator,
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136 Element root,
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137 List<State> states)
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138 {
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139 Element reachable = createArtNode(
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140 creator, "reachable-states", null, null);
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141
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142 for (State s: states) {
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143 appendState(creator, reachable, s);
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144 }
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145
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146 root.appendChild(reachable);
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147 }
211
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148
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149
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150 public static void appendOutputModes(
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151 XMLUtils.ElementCreator creator,
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152 Element out,
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153 List<Output> outputs)
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154 {
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155 for (Output o: outputs) {
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156 out.appendChild(createArtNode(
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157 creator,
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158 "output",
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159 new String[] {"name", "description", "mime-type"},
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160 new String[] {o.getName(),o.getDescription(),o.getMimeType()}));
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161 }
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162 }
107
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163 }
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164 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8:
http://dive4elements.wald.intevation.org