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git.argeo.org Git - lgpl/argeo-commons.git/blob - explorer/model/SingleJcrNodeElem.java
2 * Copyright (C) 2007-2012 Argeo GmbH
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 WorkspaceElem}, a
29 * {@link SingleJcrNodeElem} or null if the node is "mounted" as the root of the UI
33 public class SingleJcrNodeElem
extends TreeParent
{
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 SingleJcrNodeElem(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 SingleJcrNodeElem(TreeParent parent
, Node node
, String name
, String alias
) {
61 /** returns the node wrapped by the current Ui object */
62 public Node
getNode() {
66 protected String
getRepositoryAlias() {
71 * Override normal behavior to initialize children only when first requested
74 public synchronized Object
[] getChildren() {
76 return super.getChildren();
78 // initialize current object
80 NodeIterator ni
= node
.getNodes();
81 while (ni
.hasNext()) {
82 Node curNode
= ni
.nextNode();
83 addChild(new SingleJcrNodeElem(this, curNode
, curNode
.getName()));
85 return super.getChildren();
86 } catch (RepositoryException re
) {
87 throw new ArgeoException(
88 "Unexcpected error while initializing children SingleJcrNode",
95 public boolean hasChildren() {
97 if (node
.getSession().isLive())
98 return node
.hasNodes();
101 } catch (RepositoryException re
) {
102 throw new ArgeoException(
103 "Unexpected error while checking children node existence",