org.argeo.cms.ui/src/org/argeo/cms/ui/jcr/JcrBrowserUtils.java

   1 package org.argeo.cms.ui.jcr;
   2
   3 import javax.jcr.Node;
   4 import javax.jcr.Property;
   5 import javax.jcr.PropertyType;
   6 import javax.jcr.RepositoryException;
   7
   8 import org.argeo.cms.ui.jcr.model.RepositoriesElem;
   9 import org.argeo.cms.ui.jcr.model.RepositoryElem;
  10 import org.argeo.cms.ui.jcr.model.SingleJcrNodeElem;
  11 import org.argeo.cms.ui.jcr.model.WorkspaceElem;
  12 import org.argeo.eclipse.ui.EclipseUiException;
  13 import org.argeo.eclipse.ui.TreeParent;
  14
  15 /** Useful methods to manage the JCR Browser */
  16 public class JcrBrowserUtils {
  17
  18         public static String getPropertyTypeAsString(Property prop) {
  19                 try {
  20                         return PropertyType.nameFromValue(prop.getType());
  21                 } catch (RepositoryException e) {
  22                         throw new EclipseUiException("Cannot check type for " + prop, e);
  23                 }
  24         }
  25
  26         /** Insure that the UI component is not stale, refresh if needed */
  27         public static void forceRefreshIfNeeded(TreeParent element) {
  28                 Node curNode = null;
  29
  30                 boolean doRefresh = false;
  31
  32                 try {
  33                         if (element instanceof SingleJcrNodeElem) {
  34                                 curNode = ((SingleJcrNodeElem) element).getNode();
  35                         } else if (element instanceof WorkspaceElem) {
  36                                 curNode = ((WorkspaceElem) element).getRootNode();
  37                         }
  38
  39                         if (curNode != null && element.getChildren().length != curNode.getNodes().getSize())
  40                                 doRefresh = true;
  41                         else if (element instanceof RepositoryElem) {
  42                                 RepositoryElem rn = (RepositoryElem) element;
  43                                 if (rn.isConnected()) {
  44                                         String[] wkpNames = rn.getAccessibleWorkspaceNames();
  45                                         if (element.getChildren().length != wkpNames.length)
  46                                                 doRefresh = true;
  47                                 }
  48                         } else if (element instanceof RepositoriesElem) {
  49                                 doRefresh = true;
  50                                 // Always force refresh for RepositoriesElem : the condition
  51                                 // below does not take remote repository into account and it is
  52                                 // not trivial to do so.
  53
  54                                 // RepositoriesElem rn = (RepositoriesElem) element;
  55                                 // if (element.getChildren().length !=
  56                                 // rn.getRepositoryRegister()
  57                                 // .getRepositories().size())
  58                                 // doRefresh = true;
  59                         }
  60                         if (doRefresh) {
  61                                 element.clearChildren();
  62                                 element.getChildren();
  63                         }
  64                 } catch (RepositoryException re) {
  65                         throw new EclipseUiException("Unexpected error while synchronising the UI with the JCR repository", re);
  66                 }
  67         }
  68 }