RepositoryElem.java

   1 package org.argeo.cms.ui.jcr.model;
   2
   3 import javax.jcr.Repository;
   4 import javax.jcr.RepositoryException;
   5 import javax.jcr.Session;
   6
   7 import org.argeo.eclipse.ui.EclipseUiException;
   8 import org.argeo.eclipse.ui.TreeParent;
   9 import org.argeo.jcr.JcrUtils;
  10
  11 /**
  12  * UI Tree component that wraps a JCR {@link Repository}. It also keeps a
  13  * reference to its parent Tree Ui component; typically the unique
  14  * {@link RepositoriesElem} object of the current view to enable bi-directionnal
  15  * browsing in the tree.
  16  */
  17
  18 public class RepositoryElem extends TreeParent {
  19         private String alias;
  20         protected Repository repository;
  21         private Session defaultSession = null;
  22
  23         /** Create a new repository with distinct name and alias */
  24         public RepositoryElem(String alias, Repository repository, TreeParent parent) {
  25                 super(alias);
  26                 this.repository = repository;
  27                 setParent(parent);
  28                 this.alias = alias;
  29         }
  30
  31         public void login() {
  32                 try {
  33                         defaultSession = repositoryLogin("main");
  34                         String[] wkpNames = defaultSession.getWorkspace().getAccessibleWorkspaceNames();
  35                         for (String wkpName : wkpNames) {
  36                                 if (wkpName.equals(defaultSession.getWorkspace().getName()))
  37                                         addChild(new WorkspaceElem(this, wkpName, defaultSession));
  38                                 else
  39                                         addChild(new WorkspaceElem(this, wkpName));
  40                         }
  41                 } catch (RepositoryException e) {
  42                         throw new EclipseUiException("Cannot connect to repository " + alias, e);
  43                 }
  44         }
  45
  46         public synchronized void logout() {
  47                 for (Object child : getChildren()) {
  48                         if (child instanceof WorkspaceElem)
  49                                 ((WorkspaceElem) child).logout();
  50                 }
  51                 clearChildren();
  52                 JcrUtils.logoutQuietly(defaultSession);
  53                 defaultSession = null;
  54         }
  55
  56         /**
  57          * Actual call to the {@link Repository#login(javax.jcr.Credentials, String)}
  58          * method. To be overridden.
  59          */
  60         protected Session repositoryLogin(String workspaceName) throws RepositoryException {
  61                 return repository.login(workspaceName);
  62         }
  63
  64         public String[] getAccessibleWorkspaceNames() {
  65                 try {
  66                         return defaultSession.getWorkspace().getAccessibleWorkspaceNames();
  67                 } catch (RepositoryException e) {
  68                         throw new EclipseUiException("Cannot retrieve workspace names", e);
  69                 }
  70         }
  71
  72         public void createWorkspace(String workspaceName) {
  73                 if (!isConnected())
  74                         login();
  75                 try {
  76                         defaultSession.getWorkspace().createWorkspace(workspaceName);
  77                 } catch (RepositoryException e) {
  78                         throw new EclipseUiException("Cannot create workspace", e);
  79                 }
  80         }
  81
  82         /** returns the {@link Repository} referenced by the current UI Node */
  83         public Repository getRepository() {
  84                 return repository;
  85         }
  86
  87         public String getAlias() {
  88                 return alias;
  89         }
  90
  91         public Boolean isConnected() {
  92                 if (defaultSession != null && defaultSession.isLive())
  93                         return true;
  94                 else
  95                         return false;
  96         }
  97 }