X-Git-Url: https://git.argeo.org/?a=blobdiff_plain;f=org.argeo.eclipse.ui%2Fsrc%2Forg%2Fargeo%2Feclipse%2Fui%2Fjcr%2FNodeElementComparer.java;fp=org.argeo.eclipse.ui%2Fsrc%2Forg%2Fargeo%2Feclipse%2Fui%2Fjcr%2FNodeElementComparer.java;h=f284b9c1385b25762aa6f52120635d24a98a21ad;hb=e61dd9dda88354091625cca85aa7c96d196688b3;hp=0000000000000000000000000000000000000000;hpb=cf3a914f6fbf31b43be5cb86e54d05e8543be6a9;p=lgpl%2Fargeo-commons.git

diff --git a/org.argeo.eclipse.ui/src/org/argeo/eclipse/ui/jcr/NodeElementComparer.java b/org.argeo.eclipse.ui/src/org/argeo/eclipse/ui/jcr/NodeElementComparer.java
new file mode 100644
index 000000000..f284b9c13
--- /dev/null
+++ b/org.argeo.eclipse.ui/src/org/argeo/eclipse/ui/jcr/NodeElementComparer.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2007-2012 Argeo GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.argeo.eclipse.ui.jcr;
+
+import javax.jcr.Node;
+import javax.jcr.RepositoryException;
+
+import org.argeo.ArgeoException;
+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 ArgeoException("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 ArgeoException("Cannot get hash code", e);
+		}
+	}
+
+}