Start migrating SLC client

[gpl/argeo-slc.git] / org.argeo.slc.client.ui / src / main / java / org / argeo / slc / client / ui / model / ResultItemsComparer.java

diff --git a/org.argeo.slc.client.ui/src/main/java/org/argeo/slc/client/ui/model/ResultItemsComparer.java b/org.argeo.slc.client.ui/src/main/java/org/argeo/slc/client/ui/model/ResultItemsComparer.java
new file mode 100644 (file)
index 0000000..14b9b06
--- /dev/null
+++ b/org.argeo.slc.client.ui/src/main/java/org/argeo/slc/client/ui/model/ResultItemsComparer.java
@@ -0,0 +1,46 @@
+package org.argeo.slc.client.ui.model;
+
+import javax.jcr.RepositoryException;
+
+import org.argeo.slc.SlcException;
+import org.eclipse.jface.viewers.IElementComparer;
+
+/**
+ * Override default behaviour to insure that 2 distincts results that have the
+ * same name will be correctly and distincly returned by corresponding
+ * TreeViewer.getSelection() method.
+ * 
+ */
+public class ResultItemsComparer implements IElementComparer {
+       // private final static Log log =
+       // LogFactory.getLog(ResultItemsComparer.class);
+
+       public boolean equals(Object a, Object b) {
+               if (b == null)
+                       return a == null ? true : false;
+
+               if (a.hashCode() != b.hashCode() || !a.getClass().equals(b.getClass()))
+                       return false;
+               else if (a instanceof SingleResultNode) {
+                       try {
+                               String ida = ((SingleResultNode) a).getNode().getIdentifier();
+
+                               String idb = ((SingleResultNode) b).getNode().getIdentifier();
+
+                               if (ida.equals(idb))
+                                       return true;
+                               else
+                                       return false;
+
+                       } catch (RepositoryException e) {
+                               throw new SlcException("Cannot compare single reult nodes", e);
+                       }
+               } else
+                       return true;
+       }
+
+       public int hashCode(Object element) {
+               return element.hashCode();
+       }
+
+}