server/plugins/org.argeo.jcr.ui.explorer/src/main/java/org/argeo/jcr/ui/explorer/model/RepositoriesNode.java

   1 package org.argeo.jcr.ui.explorer.model;
   2
   3 import java.util.Map;
   4
   5 import javax.jcr.Repository;
   6 import javax.jcr.RepositoryFactory;
   7
   8 import org.argeo.eclipse.ui.TreeParent;
   9 import org.argeo.jcr.RepositoryRegister;
  10
  11 /**
  12  * UI Tree component. Implements the Argeo abstraction of a
  13  * {@link RepositoryFactory} that enable a user to "mount" various repositories
  14  * in a single Tree like View. It is usually meant to be at the root of the UI
  15  * Tree and thus {@link getParent()} method will return null.
  16  *
  17  * The {@link RepositoryFactory} is injected at instantiation time and must be
  18  * use get or register new {@link Repository} objects upon which a reference is
  19  * kept here.
  20  */
  21
  22 public class RepositoriesNode extends TreeParent {
  23         private final RepositoryRegister repositoryRegister;
  24
  25         public RepositoriesNode(String name, RepositoryRegister repositoryRegister,
  26                         TreeParent parent) {
  27                 super(name);
  28                 this.repositoryRegister = repositoryRegister;
  29         }
  30
  31         /**
  32          * Override normal behaviour to initialize the various repositories only at
  33          * request time
  34          */
  35         @Override
  36         public synchronized Object[] getChildren() {
  37                 if (isLoaded()) {
  38                         return super.getChildren();
  39                 } else {
  40                         // initialize current object
  41                         Map<String, Repository> refRepos = repositoryRegister
  42                                         .getRepositories();
  43                         for (String name : refRepos.keySet()) {
  44                                 super.addChild(new RepositoryNode(name, refRepos.get(name),
  45                                                 this));
  46                         }
  47                         return super.getChildren();
  48                 }
  49         }
  50
  51         public void registerNewRepository(String alias, Repository repository) {
  52                 // TODO: implement this
  53                 // Create a new RepositoryNode Object
  54                 // add it
  55                 // super.addChild(new RepositoriesNode(...));
  56         }
  57
  58         /** Returns the {@link RepositoryRegister} wrapped by thgis object. */
  59         public RepositoryRegister getRepositoryRegister() {
  60                 return repositoryRegister;
  61         }
  62 }