Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/collections/FLYSArtifactCollection.java @ 294:e5e7af208857

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Added an OutGenerator interface that might be used to generator collected outputs of a set of artifacts. flys-artifacts/trunk@1632 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Thu, 31 Mar 2011 10:54:07 +0000
parents 3419b1c8ca28
children 8d0932c2c2ef
rev   line source
147
76cc1a66a05f Implemented a FLYSArtifactCollection that will be used in this application now.
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1 package de.intevation.flys.collections;
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2
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3 import java.util.Date;
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4
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5 import javax.xml.xpath.XPathConstants;
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6
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7 import org.apache.log4j.Logger;
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8
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9 import org.w3c.dom.Document;
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10 import org.w3c.dom.Element;
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11 import org.w3c.dom.Node;
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12 import org.w3c.dom.NodeList;
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13
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14 import de.intevation.artifacts.ArtifactDatabase;
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15 import de.intevation.artifacts.ArtifactDatabaseException;
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16 import de.intevation.artifacts.ArtifactNamespaceContext;
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17 import de.intevation.artifacts.CallContext;
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18 import de.intevation.artifacts.CallMeta;
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19
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20 import de.intevation.artifacts.common.utils.XMLUtils;
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21
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22 import de.intevation.artifactdatabase.DefaultArtifactCollection;
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23
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24
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25 /**
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26 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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27 */
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28 public class FLYSArtifactCollection extends DefaultArtifactCollection {
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29
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30 /** The logger used in this class.*/
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31 private static Logger log = Logger.getLogger(FLYSArtifactCollection.class);
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32
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33
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34 /** Constant XPath that points to the outputmodes of an artifact.*/
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35 public static final String XPATH_ARTIFACT_OUTPUTMODES =
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36 "/art:result/art:outputmodes";
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37
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38 public static final String XPATH_COLLECTION_ITEMS =
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39 "/art:result/art:artifact-collection/art:collection-item";
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40
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41
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42 @Override
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43 public Document describe(CallContext context) {
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44 log.debug("FLYSArtifactCollection.describe: " + identifier);
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45
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46 Document doc = XMLUtils.newDocument();
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47
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48 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator(
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49 doc,
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50 ArtifactNamespaceContext.NAMESPACE_URI,
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51 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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52
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53 Date creationTime = getCreationTime();
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54 String creation = creationTime != null
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55 ? Long.toString(creationTime.getTime())
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56 : "";
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57
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58 Element collection = ec.create("artifact-collection");
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59 Element artifacts = ec.create("artifacts");
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60
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61 ec.addAttr(collection, "name", getName(), true);
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62 ec.addAttr(collection, "uuid", identifier(), true);
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63 ec.addAttr(collection, "creation", creation, true);
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64
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65 collection.appendChild(artifacts);
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66 doc.appendChild(collection);
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67
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68 Document attribute = getAttribute();
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69 if (attribute != null) {
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70 Node child = attribute.getFirstChild();
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71 collection.appendChild(doc.importNode(child, true));
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72 }
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73
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74 try {
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75 ArtifactDatabase db = context.getDatabase();
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76 CallMeta meta = context.getMeta();
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77
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78 Document itemList = db.listCollectionArtifacts(identifier(), meta);
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79 NodeList items = (NodeList) XMLUtils.xpath(
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80 itemList,
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81 XPATH_COLLECTION_ITEMS,
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82 XPathConstants.NODESET,
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83 ArtifactNamespaceContext.INSTANCE);
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84
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85 if (items == null || items.getLength() == 0) {
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86 log.debug("No collection items found.");
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87 return doc;
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88 }
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89
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90 int num = items.getLength();
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91
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92 for (int i = 0; i < num; i++) {
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93 String uuid = XMLUtils.xpathString(
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94 items.item(i),
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95 "@art:uuid",
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96 ArtifactNamespaceContext.INSTANCE);
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97
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98 try {
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99 artifacts.appendChild(
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100 buildArtifactNode(db, uuid, context, ec));
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101 }
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102 catch (ArtifactDatabaseException dbe) {
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103 log.warn(dbe, dbe);
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104 }
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105 }
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106 }
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107 catch (ArtifactDatabaseException ade) {
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108 log.error(ade, ade);
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109 }
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110
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111 return doc;
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112 }
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113
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114
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115 protected Element buildArtifactNode(
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116 ArtifactDatabase database,
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117 String uuid,
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118 CallContext context,
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119 XMLUtils.ElementCreator ec)
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120 throws ArtifactDatabaseException
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121 {
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122 log.debug("Append artifact '" + uuid + "' to collection description");
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123
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124 // XXX I am not sure if it works well every time with an empty document
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125 // in the describe operation of an artifact.
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126 Document description = database.describe(uuid, null, context.getMeta());
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127
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128 de.intevation.flys.artifacts.XMLDebug.out(description);
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129
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130 String hash = "MYHASH";
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131 // TODO
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132
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133 Element ci = ec.create("artifact");
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134 ec.addAttr(ci, "uuid", uuid, true);
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135 ec.addAttr(ci, "hash", hash, true);
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136
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137 Node outputModes = (Node) XMLUtils.xpath(
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138 description,
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139 XPATH_ARTIFACT_OUTPUTMODES,
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140 XPathConstants.NODE,
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141 ArtifactNamespaceContext.INSTANCE);
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142
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143 if (outputModes != null) {
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144 Document doc = ci.getOwnerDocument();
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145 ci.appendChild(doc.importNode(outputModes, true));
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146 }
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147
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148 return ci;
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149 }
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150 }
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151 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org