RepositoriesElem.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.workbench.internal.jcr.model;
  17
  18 import java.util.Map;
  19
  20 import javax.jcr.Node;
  21 import javax.jcr.NodeIterator;
  22 import javax.jcr.Repository;
  23 import javax.jcr.RepositoryException;
  24 import javax.jcr.RepositoryFactory;
  25 import javax.jcr.Session;
  26
  27 import org.argeo.cms.ArgeoNames;
  28 import org.argeo.eclipse.ui.EclipseUiException;
  29 import org.argeo.eclipse.ui.TreeParent;
  30 import org.argeo.eclipse.ui.dialogs.ErrorFeedback;
  31 import org.argeo.jcr.RepositoryRegister;
  32 import org.argeo.node.NodeUtils;
  33 import org.argeo.node.security.Keyring;
  34
  35 /**
  36  * UI Tree component that implements the Argeo abstraction of a
  37  * {@link RepositoryFactory} that enable a user to "mount" various repositories
  38  * in a single Tree like View. It is usually meant to be at the root of the UI
  39  * Tree and thus {@link getParent()} method will return null.
  40  *
  41  * The {@link RepositoryFactory} is injected at instantiation time and must be
  42  * use get or register new {@link Repository} objects upon which a reference is
  43  * kept here.
  44  */
  45
  46 public class RepositoriesElem extends TreeParent implements ArgeoNames {
  47         private final RepositoryRegister repositoryRegister;
  48         private final RepositoryFactory repositoryFactory;
  49
  50         /**
  51          * A session of the logged in user on the default workspace of the node
  52          * repository.
  53          */
  54         private final Session userSession;
  55         private final Keyring keyring;
  56
  57         public RepositoriesElem(String name, RepositoryRegister repositoryRegister, RepositoryFactory repositoryFactory,
  58                         TreeParent parent, Session userSession, Keyring keyring) {
  59                 super(name);
  60                 this.repositoryRegister = repositoryRegister;
  61                 this.repositoryFactory = repositoryFactory;
  62                 this.userSession = userSession;
  63                 this.keyring = keyring;
  64         }
  65
  66         /**
  67          * Override normal behavior to initialize the various repositories only at
  68          * request time
  69          */
  70         @Override
  71         public synchronized Object[] getChildren() {
  72                 if (isLoaded()) {
  73                         return super.getChildren();
  74                 } else {
  75                         // initialize current object
  76                         Map<String, Repository> refRepos = repositoryRegister.getRepositories();
  77                         for (String name : refRepos.keySet()) {
  78                                 Repository repository = refRepos.get(name);
  79                                 // if (repository instanceof MaintainedRepository)
  80                                 // super.addChild(new MaintainedRepositoryElem(name,
  81                                 // repository, this));
  82                                 // else
  83                                 super.addChild(new RepositoryElem(name, repository, this));
  84                         }
  85
  86                         // remote
  87                         if (keyring != null) {
  88                                 try {
  89                                         addRemoteRepositories(keyring);
  90                                 } catch (RepositoryException e) {
  91                                         throw new EclipseUiException("Cannot browse remote repositories", e);
  92                                 }
  93                         }
  94                         return super.getChildren();
  95                 }
  96         }
  97
  98         protected void addRemoteRepositories(Keyring jcrKeyring) throws RepositoryException {
  99                 Node userHome = NodeUtils.getUserHome(userSession);
 100                 if (userHome != null && userHome.hasNode(ARGEO_REMOTE)) {
 101                         NodeIterator it = userHome.getNode(ARGEO_REMOTE).getNodes();
 102                         while (it.hasNext()) {
 103                                 Node remoteNode = it.nextNode();
 104                                 String uri = remoteNode.getProperty(ARGEO_URI).getString();
 105                                 try {
 106                                         RemoteRepositoryElem remoteRepositoryNode = new RemoteRepositoryElem(remoteNode.getName(),
 107                                                         repositoryFactory, uri, this, userSession, jcrKeyring, remoteNode.getPath());
 108                                         super.addChild(remoteRepositoryNode);
 109                                 } catch (Exception e) {
 110                                         ErrorFeedback.show("Cannot add remote repository " + remoteNode, e);
 111                                 }
 112                         }
 113                 }
 114         }
 115
 116         public void registerNewRepository(String alias, Repository repository) {
 117                 // TODO: implement this
 118                 // Create a new RepositoryNode Object
 119                 // add it
 120                 // super.addChild(new RepositoriesNode(...));
 121         }
 122
 123         /** Returns the {@link RepositoryRegister} wrapped by this object. */
 124         public RepositoryRegister getRepositoryRegister() {
 125                 return repositoryRegister;
 126         }
 127 }