+++ /dev/null
-/*
- * Copyright (C) 2007-2012 Argeo GmbH
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.argeo.eclipse.ui.workbench.internal.jcr.model;
-
-import javax.jcr.Node;
-import javax.jcr.NodeIterator;
-import javax.jcr.RepositoryException;
-import javax.jcr.Workspace;
-
-import org.argeo.eclipse.ui.EclipseUiException;
-import org.argeo.eclipse.ui.TreeParent;
-
-/**
- * UI Tree component. Wraps a node of a JCR {@link Workspace}. It also keeps a
- * reference to its parent node that can either be a {@link WorkspaceElem}, a
- * {@link SingleJcrNodeElem} or null if the node is "mounted" as the root of the UI
- * tree.
- */
-
-public class SingleJcrNodeElem extends TreeParent {
-
- private final Node node;
- private String alias = null;
-
- // keeps a local reference to the node's name to avoid exception when the
- // session is lost
- // private final String name;
-
- /** Creates a new UiNode in the UI Tree */
- public SingleJcrNodeElem(TreeParent parent, Node node, String name) {
- super(name);
- setParent(parent);
- this.node = node;
- }
-
- /**
- * Creates a new UiNode in the UI Tree, keeping a reference to the alias of
- * the corresponding repository in the current UI environment. It is useful
- * to be able to mount nodes as roots of the UI tree.
- */
- public SingleJcrNodeElem(TreeParent parent, Node node, String name, String alias) {
- super(name);
- setParent(parent);
- this.node = node;
- this.alias = alias;
- }
-
- /** returns the node wrapped by the current Ui object */
- public Node getNode() {
- return node;
- }
-
- protected String getRepositoryAlias() {
- return alias;
- }
-
- /**
- * Override normal behavior to initialize children only when first requested
- */
- @Override
- public synchronized Object[] getChildren() {
- if (isLoaded()) {
- return super.getChildren();
- } else {
- // initialize current object
- try {
- NodeIterator ni = node.getNodes();
- while (ni.hasNext()) {
- Node curNode = ni.nextNode();
- addChild(new SingleJcrNodeElem(this, curNode, curNode.getName()));
- }
- return super.getChildren();
- } catch (RepositoryException re) {
- throw new EclipseUiException(
- "Unexcpected error while initializing children SingleJcrNode",
- re);
- }
- }
- }
-
- @Override
- public boolean hasChildren() {
- try {
- if (node.getSession().isLive())
- return node.hasNodes();
- else
- return false;
- } catch (RepositoryException re) {
- throw new EclipseUiException(
- "Unexpected error while checking children node existence",
- re);
- }
- }
-
-}