+ refactoring of the JCR UI Model (in a MVC point of view)

[lgpl/argeo-commons.git] / server / plugins / org.argeo.jcr.ui.explorer / src / main / java / org / argeo / jcr / ui / explorer / model / RepositoriesNode.java

diff --git a/server/plugins/org.argeo.jcr.ui.explorer/src/main/java/org/argeo/jcr/ui/explorer/model/RepositoriesNode.java b/server/plugins/org.argeo.jcr.ui.explorer/src/main/java/org/argeo/jcr/ui/explorer/model/RepositoriesNode.java
new file mode 100644 (file)
index 0000000..559c8aa
--- /dev/null
+++ b/server/plugins/org.argeo.jcr.ui.explorer/src/main/java/org/argeo/jcr/ui/explorer/model/RepositoriesNode.java
@@ -0,0 +1,65 @@
+package org.argeo.jcr.ui.explorer.model;
+
+import java.util.Map;
+
+import javax.jcr.Repository;
+import javax.jcr.RepositoryFactory;
+
+import org.argeo.eclipse.ui.TreeParent;
+import org.argeo.jcr.RepositoryRegister;
+
+/**
+ * UI Tree component. Implements the Argeo abstraction of a
+ * {@link RepositoryFactory} that enable a user to "mount" various repositories
+ * in a single Tree like View. It is usually meant to be at the root of the UI
+ * Tree and thus {@link getParent()} method will return null.
+ * 
+ * The {@link RepositoryFactory} is injected at instantiation time and must be
+ * use get or register new {@link Repository} objects upon which a reference is
+ * kept here.
+ */
+
+public class RepositoriesNode extends TreeParent {
+       private final String name;
+       private final RepositoryRegister repositoryRegister;
+
+       public RepositoriesNode(String name, RepositoryRegister repositoryRegister,
+                       TreeParent parent) {
+               super(name);
+               this.name = name;
+               this.repositoryRegister = repositoryRegister;
+       }
+
+       /**
+        * Override normal behaviour to initialize the various repositories only at
+        * request time
+        */
+       @Override
+       public synchronized Object[] getChildren() {
+               if (isLoaded()) {
+                       return super.getChildren();
+               } else {
+                       // initialize current object
+                       Map<String, Repository> refRepos = repositoryRegister
+                                       .getRepositories();
+                       for (String name : refRepos.keySet()) {
+                               super.addChild(new RepositoryNode(name, refRepos.get(name),
+                                               this));
+                       }
+                       return super.getChildren();
+               }
+       }
+
+       public void registerNewRepository(String alias, Repository repository) {
+               // TODO: implement this
+               // Create a new RepositoryNode Object
+               // add it
+               // super.addChild(new RepositoriesNode(...));
+       }
+
+       /** Returns the {@link RepositoryRegister} wrapped by thgis object. */
+       public RepositoryRegister getRepositoryRegister() {
+               return repositoryRegister;
+       }
+
+}