RepositoryElem.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.jcr.ui.explorer.model;
  17
  18 import javax.jcr.Repository;
  19 import javax.jcr.RepositoryException;
  20 import javax.jcr.Session;
  21
  22 import org.argeo.ArgeoException;
  23 import org.argeo.eclipse.ui.TreeParent;
  24
  25 /**
  26  * UI Tree component. Wraps a JCR {@link Repository}. It also keeps a reference
  27  * to its parent Tree Ui component; typically the unique {@link Repositories}
  28  * object of the current view to enable bi-directionnal browsing in the tree.
  29  */
  30
  31 public class RepositoryElem extends TreeParent {
  32         private String alias;
  33         protected Repository repository;
  34         private Session defaultSession = null;
  35
  36         /** Create a new repository with distinct name & alias */
  37         public RepositoryElem(String alias, Repository repository, TreeParent parent) {
  38                 super(alias);
  39                 this.repository = repository;
  40                 setParent(parent);
  41                 this.alias = alias;
  42         }
  43
  44         public void login() {
  45                 try {
  46                         defaultSession = repositoryLogin(null);
  47                         String[] wkpNames = defaultSession.getWorkspace()
  48                                         .getAccessibleWorkspaceNames();
  49                         for (String wkpName : wkpNames) {
  50                                 if (wkpName.equals(defaultSession.getWorkspace().getName()))
  51                                         addChild(new WorkspaceElem(this, wkpName, defaultSession));
  52                                 else
  53                                         addChild(new WorkspaceElem(this, wkpName));
  54                         }
  55                 } catch (RepositoryException e) {
  56                         throw new ArgeoException("Cannot connect to repository " + alias, e);
  57                 }
  58         }
  59
  60         /**
  61          * Actual call to the
  62          * {@link Repository#login(javax.jcr.Credentials, String)} method. To be
  63          * overridden.
  64          */
  65         protected Session repositoryLogin(String workspaceName)
  66                         throws RepositoryException {
  67                 return repository.login(workspaceName);
  68         }
  69
  70         public String[] getAccessibleWorkspaceNames() {
  71                 try {
  72                         return defaultSession.getWorkspace().getAccessibleWorkspaceNames();
  73                 } catch (RepositoryException e) {
  74                         throw new ArgeoException("Cannot retrieve workspace names", e);
  75                 }
  76         }
  77
  78         public void createWorkspace(String workspaceName) {
  79                 if (!isConnected())
  80                         login();
  81                 try {
  82                         defaultSession.getWorkspace().createWorkspace(workspaceName);
  83                 } catch (RepositoryException e) {
  84                         throw new ArgeoException("Cannot create workspace", e);
  85                 }
  86         }
  87
  88         /** returns the {@link Repository} referenced by the current UI Node */
  89         public Repository getRepository() {
  90                 return repository;
  91         }
  92
  93         public String getAlias() {
  94                 return alias;
  95         }
  96
  97         public Boolean isConnected() {
  98                 if (defaultSession != null && defaultSession.isLive())
  99                         return true;
 100                 else
 101                         return false;
 102         }
 103 }