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

   1 /*
   2  * Copyright (C) 2007-2012 Argeo GmbH
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.argeo.cms.ui.jcr;
  17
  18 import javax.jcr.Node;
  19 import javax.jcr.Property;
  20 import javax.jcr.PropertyType;
  21 import javax.jcr.RepositoryException;
  22
  23 import org.argeo.cms.ui.jcr.model.RepositoriesElem;
  24 import org.argeo.cms.ui.jcr.model.RepositoryElem;
  25 import org.argeo.cms.ui.jcr.model.SingleJcrNodeElem;
  26 import org.argeo.cms.ui.jcr.model.WorkspaceElem;
  27 import org.argeo.eclipse.ui.EclipseUiException;
  28 import org.argeo.eclipse.ui.TreeParent;
  29
  30 /** Useful methods to manage the JCR Browser */
  31 public class JcrBrowserUtils {
  32
  33         public static String getPropertyTypeAsString(Property prop) {
  34                 try {
  35                         return PropertyType.nameFromValue(prop.getType());
  36                 } catch (RepositoryException e) {
  37                         throw new EclipseUiException("Cannot check type for " + prop, e);
  38                 }
  39         }
  40
  41         /** Insure that the UI component is not stale, refresh if needed */
  42         public static void forceRefreshIfNeeded(TreeParent element) {
  43                 Node curNode = null;
  44
  45                 boolean doRefresh = false;
  46
  47                 try {
  48                         if (element instanceof SingleJcrNodeElem) {
  49                                 curNode = ((SingleJcrNodeElem) element).getNode();
  50                         } else if (element instanceof WorkspaceElem) {
  51                                 curNode = ((WorkspaceElem) element).getRootNode();
  52                         }
  53
  54                         if (curNode != null && element.getChildren().length != curNode.getNodes().getSize())
  55                                 doRefresh = true;
  56                         else if (element instanceof RepositoryElem) {
  57                                 RepositoryElem rn = (RepositoryElem) element;
  58                                 if (rn.isConnected()) {
  59                                         String[] wkpNames = rn.getAccessibleWorkspaceNames();
  60                                         if (element.getChildren().length != wkpNames.length)
  61                                                 doRefresh = true;
  62                                 }
  63                         } else if (element instanceof RepositoriesElem) {
  64                                 doRefresh = true;
  65                                 // Always force refresh for RepositoriesElem : the condition
  66                                 // below does not take remote repository into account and it is
  67                                 // not trivial to do so.
  68
  69                                 // RepositoriesElem rn = (RepositoriesElem) element;
  70                                 // if (element.getChildren().length !=
  71                                 // rn.getRepositoryRegister()
  72                                 // .getRepositories().size())
  73                                 // doRefresh = true;
  74                         }
  75                         if (doRefresh) {
  76                                 element.clearChildren();
  77                                 element.getChildren();
  78                         }
  79                 } catch (RepositoryException re) {
  80                         throw new EclipseUiException("Unexpected error while synchronising the UI with the JCR repository", re);
  81                 }
  82         }
  83 }