Mercurial > dive4elements > gnv-client
comparison gnv/src/main/java/de/intevation/gnv/action/PreviousArtifactStepAction.java @ 394:14eecfde4607
Render links to step back to previous states into gui. Added controller to advance back to these states.
gnv/trunk@538 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
|---|---|
| date | Wed, 13 Jan 2010 22:17:02 +0000 |
| parents | |
| children | 8330c1dbab34 |
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| 393:d812c5b62eb4 | 394:14eecfde4607 |
|---|---|
| 1 package de.intevation.gnv.action; | |
| 2 | |
| 3 import java.util.ArrayList; | |
| 4 import java.util.Collection; | |
| 5 import java.util.Iterator; | |
| 6 import java.util.Enumeration; | |
| 7 | |
| 8 import javax.servlet.http.HttpServletRequest; | |
| 9 import javax.servlet.http.HttpServletResponse; | |
| 10 | |
| 11 import javax.xml.xpath.XPathConstants; | |
| 12 | |
| 13 import org.apache.log4j.Logger; | |
| 14 import org.apache.struts.action.ActionForm; | |
| 15 import org.apache.struts.action.ActionForward; | |
| 16 import org.apache.struts.action.ActionMapping; | |
| 17 import org.w3c.dom.Node; | |
| 18 | |
| 19 import de.intevation.gnv.action.sessionmodel.SessionModel; | |
| 20 import de.intevation.gnv.action.sessionmodel.SessionModelFactory; | |
| 21 import de.intevation.gnv.artifactdatabase.client.ArtifactDatabaseClient; | |
| 22 import de.intevation.gnv.artifactdatabase.client.ArtifactDatabaseClientFactory; | |
| 23 import de.intevation.gnv.artifactdatabase.objects.ArtifactDescription; | |
| 24 import de.intevation.gnv.artifactdatabase.objects.ArtifactObject; | |
| 25 import de.intevation.gnv.artifactdatabase.objects.ArtifactStatisticsSet; | |
| 26 import de.intevation.gnv.artifactdatabase.objects.DefaultInputParameter; | |
| 27 import de.intevation.gnv.artifactdatabase.objects.InputParameter; | |
| 28 import de.intevation.gnv.util.ArtifactNamespaceContext; | |
| 29 import de.intevation.gnv.util.XMLUtils; | |
| 30 import de.intevation.gnv.util.XSLTransformer; | |
| 31 | |
| 32 /** | |
| 33 * @author Ingo Weinzierl <ingo.weinzierl@intevation.de> | |
| 34 * | |
| 35 */ | |
| 36 public class PreviousArtifactStepAction extends ArtifactDatabaseActionBase { | |
| 37 | |
| 38 public static final String XPATH_DYNAMIC_UI = "art:dynamic"; | |
| 39 public static final String XPATH_STATIC_UI = "art:static"; | |
| 40 | |
| 41 public static final String URL_STATE_KEY = "target"; | |
| 42 | |
| 43 private static Logger logger = | |
| 44 Logger.getLogger(PreviousArtifactStepAction.class); | |
| 45 | |
| 46 | |
| 47 public PreviousArtifactStepAction() { | |
| 48 super(); | |
| 49 } | |
| 50 | |
| 51 | |
| 52 @Override | |
| 53 public ActionForward execute( | |
| 54 ActionMapping mapping, | |
| 55 ActionForm form, | |
| 56 HttpServletRequest request, | |
| 57 HttpServletResponse response | |
| 58 ) throws Exception { | |
| 59 | |
| 60 String id = request.getSession().getId(); | |
| 61 | |
| 62 SessionModel session = | |
| 63 SessionModelFactory.getInstance().getSessionModel(request); | |
| 64 | |
| 65 // TODO check if target is reachable | |
| 66 | |
| 67 ArtifactDatabaseClientFactory f = | |
| 68 ArtifactDatabaseClientFactory.getInstance(); | |
| 69 ArtifactDatabaseClient client = | |
| 70 f.getArtifactDatabaseClient(getLocale(request)); | |
| 71 | |
| 72 ArtifactObject artifactFactory = session.getSelectedArtifactFactory(); | |
| 73 ArtifactObject currentArtifact = session.getCurrentArtifact(); | |
| 74 | |
| 75 String target = (String) request.getParameter(URL_STATE_KEY); | |
| 76 logger.debug("Step back to previous state: " + target); | |
| 77 | |
| 78 client.doAdvance( | |
| 79 artifactFactory, | |
| 80 currentArtifact, | |
| 81 target | |
| 82 ); | |
| 83 | |
| 84 ArtifactDescription description = client.getCurrentStepDescription( | |
| 85 artifactFactory, | |
| 86 currentArtifact, | |
| 87 true | |
| 88 ); | |
| 89 | |
| 90 Node currentUI = description.getCurrentUI(); | |
| 91 if (currentUI != null) { | |
| 92 XSLTransformer transformer = new XSLTransformer(); | |
| 93 Node dynamicNode = (Node) XMLUtils.xpath( | |
| 94 currentUI, | |
| 95 XPATH_DYNAMIC_UI, | |
| 96 XPathConstants.NODE, | |
| 97 ArtifactNamespaceContext.INSTANCE | |
| 98 ); | |
| 99 | |
| 100 if (dynamicNode != null) { | |
| 101 String dynamicUI = transformer.transform( | |
| 102 dynamicNode, "UTF-8", request.getRealPath( | |
| 103 "WEB-INF/config/templates/describe-ui.xsl") | |
| 104 ); | |
| 105 request.setAttribute("ui", dynamicUI); | |
| 106 } | |
| 107 | |
| 108 Node staticNode = (Node) XMLUtils.xpath( | |
| 109 currentUI, | |
| 110 XPATH_STATIC_UI, | |
| 111 XPathConstants.NODE, | |
| 112 ArtifactNamespaceContext.INSTANCE | |
| 113 ); | |
| 114 | |
| 115 if (staticNode != null){ | |
| 116 String staticUI = transformer.transform( | |
| 117 staticNode, "UTF-8", request.getRealPath( | |
| 118 "WEB-INF/config/templates/describe-ui-static.xsl") | |
| 119 ); | |
| 120 request.setAttribute("staticui", staticUI); | |
| 121 } | |
| 122 } | |
| 123 | |
| 124 return super.execute(mapping, form, request, response); | |
| 125 } | |
| 126 } |