Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/collections/FLYSArtifactCollection.java @ 147:76cc1a66a05f
Implemented a FLYSArtifactCollection that will be used in this application now.
flys-artifacts/trunk@1565 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
|---|---|
| date | Thu, 24 Mar 2011 18:47:07 +0000 |
| parents | |
| children | 2649ada6b053 |
comparison
equal
deleted
inserted
replaced
| 146:e8dfe6ba2000 | 147:76cc1a66a05f |
|---|---|
| 1 package de.intevation.flys.collections; | |
| 2 | |
| 3 import java.util.Date; | |
| 4 | |
| 5 import javax.xml.xpath.XPathConstants; | |
| 6 | |
| 7 import org.apache.log4j.Logger; | |
| 8 | |
| 9 import org.w3c.dom.Document; | |
| 10 import org.w3c.dom.Element; | |
| 11 import org.w3c.dom.Node; | |
| 12 | |
| 13 import de.intevation.artifacts.Artifact; | |
| 14 import de.intevation.artifacts.ArtifactNamespaceContext; | |
| 15 import de.intevation.artifacts.CallContext; | |
| 16 import de.intevation.artifacts.CollectionItem; | |
| 17 | |
| 18 import de.intevation.artifacts.common.utils.XMLUtils; | |
| 19 | |
| 20 import de.intevation.artifactdatabase.DefaultArtifactCollection; | |
| 21 import de.intevation.artifactdatabase.Backend; | |
| 22 import de.intevation.artifactdatabase.Backend.PersistentArtifact; | |
| 23 | |
| 24 | |
| 25 /** | |
| 26 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> | |
| 27 */ | |
| 28 public class FLYSArtifactCollection extends DefaultArtifactCollection { | |
| 29 | |
| 30 /** The logger used in this class.*/ | |
| 31 private static Logger log = Logger.getLogger(FLYSArtifactCollection.class); | |
| 32 | |
| 33 | |
| 34 /** Constant XPath that points to the outputmodes of an artifact.*/ | |
| 35 public static final String XPATH_ARTIFACT_OUTPUTMODES = | |
| 36 "/art:result/art:outputmodes"; | |
| 37 | |
| 38 | |
| 39 @Override | |
| 40 public Document describe(CallContext context) { | |
| 41 log.debug("FLYSArtifactCollection.describe: " + identifier); | |
| 42 | |
| 43 Document doc = XMLUtils.newDocument(); | |
| 44 | |
| 45 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator( | |
| 46 doc, | |
| 47 ArtifactNamespaceContext.NAMESPACE_URI, | |
| 48 ArtifactNamespaceContext.NAMESPACE_PREFIX); | |
| 49 | |
| 50 Date creationTime = getCreationTime(); | |
| 51 String creation = creationTime != null | |
| 52 ? Long.toString(creationTime.getTime()) | |
| 53 : ""; | |
| 54 | |
| 55 Element collection = ec.create("artifact-collection"); | |
| 56 Element artifacts = ec.create("artifacts"); | |
| 57 | |
| 58 ec.addAttr(collection, "name", getName(), true); | |
| 59 ec.addAttr(collection, "uuid", identifier(), true); | |
| 60 ec.addAttr(collection, "creation", creation, true); | |
| 61 | |
| 62 collection.appendChild(artifacts); | |
| 63 doc.appendChild(collection); | |
| 64 | |
| 65 Document attribute = getAttribute(); | |
| 66 if (attribute != null) { | |
| 67 Node child = attribute.getFirstChild(); | |
| 68 collection.appendChild(doc.importNode(child, true)); | |
| 69 } | |
| 70 | |
| 71 Backend backend = Backend.getInstance(); | |
| 72 CollectionItem[] items = backend.listCollectionArtifacts(identifier()); | |
| 73 | |
| 74 for (CollectionItem item: items) { | |
| 75 artifacts.appendChild( | |
| 76 buildArtifactNode(item, backend, context, ec)); | |
| 77 } | |
| 78 | |
| 79 return doc; | |
| 80 } | |
| 81 | |
| 82 | |
| 83 protected Element buildArtifactNode( | |
| 84 CollectionItem item, | |
| 85 Backend backend, | |
| 86 CallContext context, | |
| 87 XMLUtils.ElementCreator ec) | |
| 88 { | |
| 89 String uuid = item.getArtifactIdentifier(); | |
| 90 | |
| 91 log.debug("Append artifact '"+ uuid +"' to collection description"); | |
| 92 | |
| 93 Element ci = ec.create("artifact"); | |
| 94 ec.addAttr(ci, "uuid", uuid); | |
| 95 | |
| 96 PersistentArtifact pArtifact = backend.getArtifact(uuid); | |
| 97 Artifact artifact = pArtifact.getArtifact(); | |
| 98 | |
| 99 // XXX I am not sure if it works well every time with an empty document | |
| 100 // in the describe operation of an artifact. | |
| 101 Document description = artifact.describe(null, context); | |
| 102 Node outputModes = (Node) XMLUtils.xpath( | |
| 103 description, | |
| 104 XPATH_ARTIFACT_OUTPUTMODES, | |
| 105 XPathConstants.NODE, | |
| 106 ArtifactNamespaceContext.INSTANCE); | |
| 107 | |
| 108 if (outputModes != null) { | |
| 109 Document doc = ci.getOwnerDocument(); | |
| 110 ci.appendChild(doc.importNode(outputModes, true)); | |
| 111 } | |
| 112 | |
| 113 return ci; | |
| 114 } | |
| 115 } | |
| 116 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |