Mercurial > dive4elements > river
comparison flys-client/src/main/java/de/intevation/flys/client/server/ArtifactDescriptionFactory.java @ 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.
flys-client/trunk@1329 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
|---|---|
| date | Fri, 18 Feb 2011 14:23:12 +0000 |
| parents | |
| children | a85bac235069 |
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| 15:eb425ab34fd8 | 16:f8a5f2c5e2b7 |
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| 1 package de.intevation.flys.client.server; | |
| 2 | |
| 3 import java.util.ArrayList; | |
| 4 import java.util.List; | |
| 5 | |
| 6 import javax.xml.xpath.XPathConstants; | |
| 7 | |
| 8 import org.w3c.dom.Document; | |
| 9 import org.w3c.dom.Node; | |
| 10 import org.w3c.dom.NodeList; | |
| 11 | |
| 12 import de.intevation.artifacts.common.ArtifactNamespaceContext; | |
| 13 import de.intevation.artifacts.common.utils.ClientProtocolUtils; | |
| 14 import de.intevation.artifacts.common.utils.XMLUtils; | |
| 15 | |
| 16 import de.intevation.flys.client.shared.model.ArtifactDescription; | |
| 17 import de.intevation.flys.client.shared.model.Data; | |
| 18 import de.intevation.flys.client.shared.model.DataItem; | |
| 19 import de.intevation.flys.client.shared.model.DefaultData; | |
| 20 import de.intevation.flys.client.shared.model.DefaultDataItem; | |
| 21 import de.intevation.flys.client.shared.model.DefaultArtifactDescription; | |
| 22 | |
| 23 | |
| 24 /** | |
| 25 * This factory class helps creating an {@link ArtifactDescription} based on the | |
| 26 * DESCRIBE document of an artifact returned by the artifact server. Use the | |
| 27 * {@link createArtifactDescription(org.w3c.dom.Document)} method with the | |
| 28 * DESCRIBE document to create such an {@link ArtifactDescription}. | |
| 29 * | |
| 30 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> | |
| 31 */ | |
| 32 public class ArtifactDescriptionFactory { | |
| 33 | |
| 34 public static final String XPATH_STATE_NAME = "@art:name"; | |
| 35 | |
| 36 /** | |
| 37 * This method creates the {@link ArtifactDescription} of the DESCRIBE | |
| 38 * document <i>doc</i>. | |
| 39 * | |
| 40 * @param doc A DESCRIBE document. | |
| 41 * | |
| 42 * @return the {@link ArtifactDescription}. | |
| 43 */ | |
| 44 public static ArtifactDescription createArtifactDescription(Document doc) { | |
| 45 System.out.println("ArtifactDescriptionFactory - create()"); | |
| 46 | |
| 47 Node currentState = ClientProtocolUtils.getCurrentState(doc); | |
| 48 Node staticNode = ClientProtocolUtils.getStaticUI(doc); | |
| 49 Node dynamicNode = ClientProtocolUtils.getDynamicUI(doc); | |
| 50 | |
| 51 String state = (String) XMLUtils.xpath( | |
| 52 currentState, | |
| 53 XPATH_STATE_NAME, | |
| 54 XPathConstants.STRING, | |
| 55 ArtifactNamespaceContext.INSTANCE); | |
| 56 System.out.println("Current state name: " + state); | |
| 57 | |
| 58 Data currentData = extractCurrentData(dynamicNode); | |
| 59 | |
| 60 // TODO parse the static ui part | |
| 61 return new DefaultArtifactDescription(null, currentData, state, null); | |
| 62 } | |
| 63 | |
| 64 | |
| 65 /** | |
| 66 * This method extracts the data that the user is able to enter in the | |
| 67 * current state of the artifact. | |
| 68 * | |
| 69 * @param dynamicNode The dynamic node of the DESCRIBE document. | |
| 70 * | |
| 71 * @return A {@link Data} object that represents the data which might be | |
| 72 * entered by the user in the current state or null, if no data might be | |
| 73 * entered. | |
| 74 */ | |
| 75 protected static Data extractCurrentData(Node dynamicNode) { | |
| 76 System.out.println("ArtifactDescriptionFactory - extractCurrentData()"); | |
| 77 | |
| 78 Node data = ClientProtocolUtils.getSelectNode(dynamicNode); | |
| 79 NodeList choices = ClientProtocolUtils.getItemNodes(data); | |
| 80 String label = ClientProtocolUtils.getLabel(data); | |
| 81 | |
| 82 DataItem[] dataItems = extractCurrentDataItems(choices); | |
| 83 | |
| 84 return new DefaultData(label, null, null, dataItems); | |
| 85 } | |
| 86 | |
| 87 | |
| 88 /** | |
| 89 * This method extract the {@link DataItem}s of the DESCRIBE document. | |
| 90 * | |
| 91 * @param items The items in the DESCRIBE document. | |
| 92 * | |
| 93 * @return the {@link DataItem}s. | |
| 94 */ | |
| 95 protected static DataItem[] extractCurrentDataItems(NodeList items) { | |
| 96 System.out.println( | |
| 97 "ArtifactDescriptionFactory - extractCurrentDataItems()"); | |
| 98 | |
| 99 if (items == null || items.getLength() == 0) { | |
| 100 System.out.println("No data items found."); | |
| 101 return null; | |
| 102 } | |
| 103 | |
| 104 int count = items.getLength(); | |
| 105 | |
| 106 List<DataItem> dataItems = new ArrayList<DataItem>(count); | |
| 107 | |
| 108 for (int i = 0; i < count; i++) { | |
| 109 Node item = items.item(i); | |
| 110 String label = ClientProtocolUtils.getLabel(item); | |
| 111 String value = ClientProtocolUtils.getValue(item); | |
| 112 | |
| 113 dataItems.add(new DefaultDataItem(label, null, value)); | |
| 114 } | |
| 115 | |
| 116 return (DataItem[]) dataItems.toArray(new DataItem[count]); | |
| 117 } | |
| 118 } | |
| 119 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |