org.argeo.slc.client.ui.dist/src/org/argeo/slc/client/ui/dist/controllers/DistTreeContentProvider.java

   1 package org.argeo.slc.client.ui.dist.controllers;
   2
   3 import java.util.ArrayList;
   4 import java.util.List;
   5
   6 import javax.jcr.Node;
   7 import javax.jcr.NodeIterator;
   8 import javax.jcr.Property;
   9 import javax.jcr.Repository;
  10 import javax.jcr.RepositoryException;
  11 import javax.jcr.RepositoryFactory;
  12 import javax.jcr.Session;
  13 import javax.jcr.nodetype.NodeType;
  14
  15 import org.argeo.eclipse.ui.TreeParent;
  16 import org.argeo.jcr.JcrUtils;
  17 import org.argeo.node.ArgeoNames;
  18 import org.argeo.node.ArgeoTypes;
  19 import org.argeo.node.NodeUtils;
  20 import org.argeo.node.security.Keyring;
  21 import org.argeo.slc.SlcException;
  22 import org.argeo.slc.client.ui.dist.model.RepoElem;
  23 import org.argeo.slc.repo.RepoConstants;
  24 import org.eclipse.jface.viewers.ITreeContentProvider;
  25 import org.eclipse.jface.viewers.Viewer;
  26
  27 /**
  28  * Enables browsing in local and remote SLC software repositories. Keyring and
  29  * repository factory must be injected
  30  */
  31 public class DistTreeContentProvider implements ITreeContentProvider {
  32         private static final long serialVersionUID = -7640840211717811421L;
  33
  34         /* DEPENDENCY INJECTION */
  35         private RepositoryFactory repositoryFactory;
  36         private Keyring keyring;
  37
  38         // Context
  39         private Session nodeSession;
  40         List<RepoElem> repositories = new ArrayList<RepoElem>();
  41
  42         public Object[] getElements(Object input) {
  43                 Repository nodeRepository = (Repository) input;
  44                 try {
  45                         if (nodeSession != null)
  46                                 dispose();
  47                         nodeSession = nodeRepository.login();
  48
  49                         String reposPath = NodeUtils.getUserHome(nodeSession).getPath()
  50                                         + RepoConstants.REPOSITORIES_BASE_PATH;
  51
  52                         if (!nodeSession.itemExists(reposPath))
  53                                 initializeModel(nodeSession);
  54
  55                         NodeIterator repos = nodeSession.getNode(reposPath).getNodes();
  56                         while (repos.hasNext()) {
  57                                 Node repoNode = repos.nextNode();
  58                                 if (repoNode.isNodeType(ArgeoTypes.ARGEO_REMOTE_REPOSITORY)) {
  59                                         String label = repoNode.isNodeType(NodeType.MIX_TITLE) ? repoNode
  60                                                         .getProperty(Property.JCR_TITLE).getString()
  61                                                         : repoNode.getName();
  62                                         repositories.add(new RepoElem(repositoryFactory, keyring,
  63                                                         repoNode, label));
  64                                 }
  65                         }
  66                 } catch (RepositoryException e) {
  67                         throw new SlcException("Cannot get base elements", e);
  68                 }
  69                 return repositories.toArray();
  70         }
  71
  72         public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
  73         }
  74
  75         // @Override
  76         public Object[] getChildren(Object parentElement) {
  77                 if (parentElement instanceof TreeParent)
  78                         return ((TreeParent) parentElement).getChildren();
  79                 else
  80                         return null;
  81         }
  82
  83         // @Override
  84         public Object getParent(Object element) {
  85                 if (element instanceof TreeParent)
  86                         return ((TreeParent) element).getParent();
  87                 return null;
  88         }
  89
  90         // @Override
  91         public boolean hasChildren(Object element) {
  92                 if (element instanceof TreeParent)
  93                         return ((TreeParent) element).hasChildren();
  94                 else
  95                         return false;
  96         }
  97
  98         public void dispose() {
  99                 for (RepoElem repoElem : repositories)
 100                         repoElem.dispose();
 101                 repositories = new ArrayList<RepoElem>();
 102                 JcrUtils.logoutQuietly(nodeSession);
 103         }
 104
 105         private void initializeModel(Session nodeSession) {
 106                 try {
 107                         Node homeNode = NodeUtils.getUserHome(nodeSession);
 108                         if (homeNode == null) // anonymous
 109                                 throw new SlcException("User must be authenticated.");
 110
 111                         // make sure base directory is available
 112                         Node repos = JcrUtils.mkdirs(nodeSession, homeNode.getPath()
 113                                         + RepoConstants.REPOSITORIES_BASE_PATH);
 114                         if (nodeSession.hasPendingChanges())
 115                                 nodeSession.save();
 116
 117                         // register default local java repository
 118                         String alias = RepoConstants.DEFAULT_JAVA_REPOSITORY_ALIAS;
 119                         Repository javaRepository = NodeUtils.getRepositoryByAlias(
 120                                         repositoryFactory, alias);
 121                         if (javaRepository != null) {
 122                                 if (!repos.hasNode(alias)) {
 123                                         Node repoNode = repos.addNode(alias,
 124                                                         ArgeoTypes.ARGEO_REMOTE_REPOSITORY);
 125                                         repoNode.setProperty(ArgeoNames.ARGEO_URI, "vm:///" + alias);
 126                                         repoNode.addMixin(NodeType.MIX_TITLE);
 127                                         repoNode.setProperty(Property.JCR_TITLE,
 128                                                         RepoConstants.DEFAULT_JAVA_REPOSITORY_LABEL);
 129                                         nodeSession.save();
 130                                 }
 131                         }
 132                 } catch (RepositoryException e) {
 133                         throw new SlcException("Cannot initialize model", e);
 134                 }
 135         }
 136
 137         /* DEPENDENCY INJECTION */
 138         public void setRepositoryFactory(RepositoryFactory repositoryFactory) {
 139                 this.repositoryFactory = repositoryFactory;
 140         }
 141
 142         public void setKeyring(Keyring keyring) {
 143                 this.keyring = keyring;
 144         }
 145 }