+++ /dev/null
-package org.argeo.cms.ui.widgets;
-
-import javax.jcr.Item;
-import javax.jcr.ItemNotFoundException;
-import javax.jcr.Node;
-import javax.jcr.Property;
-import javax.jcr.RepositoryException;
-import javax.jcr.Session;
-
-import org.argeo.cms.swt.CmsSwtUtils;
-import org.argeo.jcr.JcrException;
-import org.eclipse.swt.widgets.Composite;
-
-/** A composite which can (optionally) manage a JCR Item. */
-public class JcrComposite extends Composite {
- private static final long serialVersionUID = -1447009015451153367L;
-
- private Session session;
-
- private String nodeId;
- private String property = null;
- private Node cache;
-
- /** Regular composite constructor. No layout is set. */
- public JcrComposite(Composite parent, int style) {
- super(parent, style);
- session = null;
- nodeId = null;
- }
-
- public JcrComposite(Composite parent, int style, Item item) {
- this(parent, style, item, false);
- }
-
- public JcrComposite(Composite parent, int style, Item item, boolean cacheImmediately) {
- super(parent, style);
- if (item != null)
- try {
- this.session = item.getSession();
-// if (!cacheImmediately && (SWT.READ_ONLY == (style & SWT.READ_ONLY))) {
-// // (useless?) optimization: we only save a pointer to the session,
-// // not even a reference to the item
-// this.nodeId = null;
-// } else {
- Node node;
- Property property = null;
- if (item instanceof Node) {
- node = (Node) item;
- } else {// Property
- property = (Property) item;
- if (property.isMultiple())// TODO manage property index
- throw new UnsupportedOperationException("Multiple properties not supported yet.");
- this.property = property.getName();
- node = property.getParent();
- }
- this.nodeId = node.getIdentifier();
- if (cacheImmediately)
- this.cache = node;
-// }
- setLayout(CmsSwtUtils.noSpaceGridLayout());
- } catch (RepositoryException e) {
- throw new IllegalStateException("Cannot create composite from " + item, e);
- }
- }
-
- public synchronized Node getNode() {
- try {
- if (!itemIsNode())
- throw new IllegalStateException("Item is not a Node");
- return getNodeInternal();
- } catch (RepositoryException e) {
- throw new JcrException("Cannot get node " + nodeId, e);
- }
- }
-
- private synchronized Node getNodeInternal() throws RepositoryException {
- if (cache != null)
- return cache;
- else if (session != null)
- if (nodeId != null)
- return session.getNodeByIdentifier(nodeId);
- else
- return null;
- else
- return null;
- }
-
- public synchronized String getPropertyName() {
- try {
- return getProperty().getName();
- } catch (RepositoryException e) {
- throw new JcrException("Cannot get property name", e);
- }
- }
-
- public synchronized Node getPropertyNode() {
- try {
- return getProperty().getNode();
- } catch (RepositoryException e) {
- throw new JcrException("Cannot get property name", e);
- }
- }
-
- public synchronized Property getProperty() {
- try {
- if (itemIsNode())
- throw new IllegalStateException("Item is not a Property");
- Node node = getNodeInternal();
- if (!node.hasProperty(property))
- throw new IllegalStateException("Property " + property + " is not set on " + node);
- return node.getProperty(property);
- } catch (RepositoryException e) {
- throw new JcrException("Cannot get property " + property + " from node " + nodeId, e);
- }
- }
-
- public synchronized boolean itemIsNode() {
- return property == null;
- }
-
- public synchronized boolean itemExists() {
- if (session == null)
- return false;
- try {
- Node n = session.getNodeByIdentifier(nodeId);
- if (!itemIsNode())
- return n.hasProperty(property);
- else
- return true;
- } catch (ItemNotFoundException e) {
- return false;
- } catch (RepositoryException e) {
- throw new JcrException("Cannot check whether node exists", e);
- }
- }
-
- /** Set/update the cache or change the node */
- public synchronized void setNode(Node node) {
- if (!itemIsNode())
- throw new IllegalArgumentException("Cannot set a Node on a Property");
-
- if (node == null) {// clear cache
- this.cache = null;
- return;
- }
-
- try {
-// if (session != null || session != node.getSession())// check session
-// throw new IllegalArgumentException("Uncompatible session");
-// if (session == null)
- session = node.getSession();
- if (nodeId == null || !nodeId.equals(node.getIdentifier())) {
- nodeId = node.getIdentifier();
- cache = node;
- itemUpdated();
- } else {
- cache = node;// set/update cache
- }
- } catch (RepositoryException e) {
- throw new IllegalStateException(e);
- }
- }
-
- /** Set/update the cache or change the property */
- public synchronized void setProperty(Property prop) {
- if (itemIsNode())
- throw new IllegalArgumentException("Cannot set a Property on a Node");
-
- if (prop == null) {// clear cache
- this.cache = null;
- return;
- }
-
- try {
- if (session == null || session != prop.getSession())// check session
- throw new IllegalArgumentException("Uncompatible session");
-
- Node node = prop.getNode();
- if (nodeId == null || !nodeId.equals(node.getIdentifier()) || !property.equals(prop.getName())) {
- nodeId = node.getIdentifier();
- property = prop.getName();
- cache = node;
- itemUpdated();
- } else {
- cache = node;// set/update cache
- }
- } catch (RepositoryException e) {
- throw new IllegalStateException(e);
- }
- }
-
- public synchronized String getNodeId() {
- return nodeId;
- }
-
- /** Change the node, does nothing if same. */
- public synchronized void setNodeId(String nodeId) throws RepositoryException {
- if (this.nodeId != null && this.nodeId.equals(nodeId))
- return;
- this.nodeId = nodeId;
- if (cache != null)
- cache = session.getNodeByIdentifier(this.nodeId);
- itemUpdated();
- }
-
- protected synchronized void itemUpdated() {
- layout();
- }
-
- public Session getSession() {
- return session;
- }
-}
projects / lgpl / argeo-commons.git / blobdiff