]>
git.argeo.org Git - lgpl/argeo-commons.git/blob - ui/explorer/model/SingleJcrNode.java
2 * Copyright (C) 2007-2012 Mathieu Baudier
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
16 package org
.argeo
.jcr
.ui
.explorer
.model
;
18 import javax
.jcr
.Node
;
19 import javax
.jcr
.NodeIterator
;
20 import javax
.jcr
.RepositoryException
;
21 import javax
.jcr
.Workspace
;
23 import org
.argeo
.ArgeoException
;
24 import org
.argeo
.eclipse
.ui
.TreeParent
;
27 * UI Tree component. Wraps a node of a JCR {@link Workspace}. It also keeps a
28 * reference to its parent node that can either be a {@link WorkspaceNode}, a
29 * {@link SingleJcrNode} or null if the node is "mounted" as the root of the UI
33 public class SingleJcrNode
extends TreeParent
implements UiNode
{
35 private final Node node
;
36 private String alias
= null;
38 // keeps a local reference to the node's name to avoid exception when the
40 // private final String name;
42 /** Creates a new UiNode in the UI Tree */
43 public SingleJcrNode(TreeParent parent
, Node node
, String name
) {
50 * Creates a new UiNode in the UI Tree, keeping a reference to the alias of
51 * the corresponding repository in the current UI environment. It is useful
52 * to be able to mount nodes as roots of the UI tree.
54 public SingleJcrNode(TreeParent parent
, Node node
, String name
, String alias
) {
61 /** returns the node wrapped by the current Ui object */
62 public Node
getNode() {
67 * Returns the alias corresponding to the repository abstraction that
68 * contains current node. If the current object is mounted as root of the UI
69 * tree, the alias is stored in the object. Otherwise, we must browse the
70 * tree backward to the RepositoryNode.
72 * Alias is then cached in the current object so that next time it will be
75 public String
getAlias() {
77 alias
= ((UiNode
) getParent()).getAlias();
83 * Override normal behavior to initialize children only when first
87 public synchronized Object
[] getChildren() {
89 return super.getChildren();
91 // initialize current object
93 NodeIterator ni
= node
.getNodes();
94 while (ni
.hasNext()) {
95 Node curNode
= ni
.nextNode();
96 addChild(new SingleJcrNode(this, curNode
, curNode
.getName()));
98 return super.getChildren();
99 } catch (RepositoryException re
) {
100 throw new ArgeoException(
101 "Unexcpected error while initializing children SingleJcrNode",
108 public boolean hasChildren() {
110 if (node
.getSession().isLive())
111 return node
.hasNodes();
114 } catch (RepositoryException re
) {
115 throw new ArgeoException(
116 "Unexpected error while checking children node existence",