X-Git-Url: https://git.argeo.org/?a=blobdiff_plain;f=org.argeo.cms.ui%2Fsrc%2Forg%2Fargeo%2Feclipse%2Fui%2Fjcr%2FNodeElementComparer.java;fp=org.argeo.cms.ui%2Fsrc%2Forg%2Fargeo%2Feclipse%2Fui%2Fjcr%2FNodeElementComparer.java;h=2f3d64d6bb377754dc856b212da8725394d6fde2;hb=d169026cb1939009fd90ac46a11f480cb3d803c0;hp=0000000000000000000000000000000000000000;hpb=a1e5c8447beec2b896b0a03e38a4c17608a4b85d;p=lgpl%2Fargeo-commons.git

diff --git a/org.argeo.cms.ui/src/org/argeo/eclipse/ui/jcr/NodeElementComparer.java b/org.argeo.cms.ui/src/org/argeo/eclipse/ui/jcr/NodeElementComparer.java
new file mode 100644
index 000000000..2f3d64d6b
--- /dev/null
+++ b/org.argeo.cms.ui/src/org/argeo/eclipse/ui/jcr/NodeElementComparer.java
@@ -0,0 +1,36 @@
+package org.argeo.eclipse.ui.jcr;
+
+import javax.jcr.Node;
+import javax.jcr.RepositoryException;
+
+import org.argeo.eclipse.ui.EclipseUiException;
+import org.eclipse.jface.viewers.IElementComparer;
+
+/** Element comparer for JCR node, to be used in JFace viewers. */
+public class NodeElementComparer implements IElementComparer {
+
+	public boolean equals(Object a, Object b) {
+		try {
+			if ((a instanceof Node) && (b instanceof Node)) {
+				Node nodeA = (Node) a;
+				Node nodeB = (Node) b;
+				return nodeA.getIdentifier().equals(nodeB.getIdentifier());
+			} else {
+				return a.equals(b);
+			}
+		} catch (RepositoryException e) {
+			throw new EclipseUiException("Cannot compare nodes", e);
+		}
+	}
+
+	public int hashCode(Object element) {
+		try {
+			if (element instanceof Node)
+				return ((Node) element).getIdentifier().hashCode();
+			return element.hashCode();
+		} catch (RepositoryException e) {
+			throw new EclipseUiException("Cannot get hash code", e);
+		}
+	}
+
+}