1 package org
.argeo
.eclipse
.ui
.jcr
;
3 import java
.util
.ArrayList
;
7 import javax
.jcr
.NodeIterator
;
8 import javax
.jcr
.RepositoryException
;
9 import javax
.jcr
.Session
;
11 import org
.argeo
.api
.cms
.CmsLog
;
12 import org
.argeo
.eclipse
.ui
.AbstractTreeContentProvider
;
13 import org
.argeo
.eclipse
.ui
.EclipseUiException
;
15 /** Canonical implementation of tree content provider manipulating JCR nodes. */
16 public abstract class AbstractNodeContentProvider
extends
17 AbstractTreeContentProvider
{
18 private static final long serialVersionUID
= -4905836490027272569L;
20 private final static CmsLog log
= CmsLog
21 .getLog(AbstractNodeContentProvider
.class);
23 private Session session
;
25 public AbstractNodeContentProvider(Session session
) {
26 this.session
= session
;
30 * Whether this path is a base path (and thus has no parent). By default it
31 * returns true if path is '/' (root node)
33 protected Boolean
isBasePath(String path
) {
35 return path
.equals("/");
39 public Object
[] getChildren(Object element
) {
41 if (element
instanceof Node
) {
43 Node node
= (Node
) element
;
44 children
= getChildren(node
);
45 } catch (RepositoryException e
) {
46 throw new EclipseUiException("Cannot get children of " + element
, e
);
48 } else if (element
instanceof WrappedNode
) {
49 WrappedNode wrappedNode
= (WrappedNode
) element
;
51 children
= getChildren(wrappedNode
.getNode());
52 } catch (RepositoryException e
) {
53 throw new EclipseUiException("Cannot get children of "
56 } else if (element
instanceof NodesWrapper
) {
57 NodesWrapper node
= (NodesWrapper
) element
;
58 children
= node
.getChildren();
60 children
= super.getChildren(element
);
63 children
= sort(element
, children
);
67 /** Do not sort by default. To be overidden to provide custom sort. */
68 protected Object
[] sort(Object parent
, Object
[] children
) {
73 * To be overridden in order to filter out some nodes. Does nothing by
74 * default. The provided list is a temporary one and can thus be modified
75 * directly . (e.g. via an iterator)
77 protected List
<Node
> filterChildren(List
<Node
> children
)
78 throws RepositoryException
{
82 protected Object
[] getChildren(Node node
) throws RepositoryException
{
83 List
<Node
> nodes
= new ArrayList
<Node
>();
84 for (NodeIterator nit
= node
.getNodes(); nit
.hasNext();)
85 nodes
.add(nit
.nextNode());
86 nodes
= filterChildren(nodes
);
87 return nodes
.toArray();
91 public Object
getParent(Object element
) {
92 if (element
instanceof Node
) {
93 Node node
= (Node
) element
;
95 String path
= node
.getPath();
99 return node
.getParent();
100 } catch (RepositoryException e
) {
101 log
.warn("Cannot get parent of " + element
+ ": " + e
);
104 } else if (element
instanceof WrappedNode
) {
105 WrappedNode wrappedNode
= (WrappedNode
) element
;
106 return wrappedNode
.getParent();
107 } else if (element
instanceof NodesWrapper
) {
108 NodesWrapper nodesWrapper
= (NodesWrapper
) element
;
109 return this.getParent(nodesWrapper
.getNode());
111 return super.getParent(element
);
115 public boolean hasChildren(Object element
) {
117 if (element
instanceof Node
) {
118 Node node
= (Node
) element
;
119 return node
.hasNodes();
120 } else if (element
instanceof WrappedNode
) {
121 WrappedNode wrappedNode
= (WrappedNode
) element
;
122 return wrappedNode
.getNode().hasNodes();
123 } else if (element
instanceof NodesWrapper
) {
124 NodesWrapper nodesWrapper
= (NodesWrapper
) element
;
125 return nodesWrapper
.hasChildren();
128 } catch (RepositoryException e
) {
129 throw new EclipseUiException("Cannot check whether " + element
130 + " has children", e
);
132 return super.hasChildren(element
);
135 public Session
getSession() {