plugins/org.argeo.slc.client.ui/src/main/java/org/argeo/slc/client/ui/model/ResultItemsComparer.java

   1 package org.argeo.slc.client.ui.model;
   2
   3 import javax.jcr.RepositoryException;
   4
   5 import org.argeo.slc.SlcException;
   6 import org.eclipse.jface.viewers.IElementComparer;
   7
   8 /**
   9  * Override default behaviour to insure that 2 distincts results that have the
  10  * same name will be correctly and distincly returned by corresponding
  11  * TreeViewer.getSelection() method.
  12  *
  13  */
  14 public class ResultItemsComparer implements IElementComparer {
  15         // private final static Log log =
  16         // LogFactory.getLog(ResultItemsComparer.class);
  17
  18         public boolean equals(Object a, Object b) {
  19                 if (b == null)
  20                         return a == null ? true : false;
  21
  22                 if (a.hashCode() != b.hashCode() || !a.getClass().equals(b.getClass()))
  23                         return false;
  24                 else if (a instanceof SingleResultNode) {
  25                         try {
  26                                 String ida = ((SingleResultNode) a).getNode().getIdentifier();
  27
  28                                 String idb = ((SingleResultNode) b).getNode().getIdentifier();
  29
  30                                 if (ida.equals(idb))
  31                                         return true;
  32                                 else
  33                                         return false;
  34
  35                         } catch (RepositoryException e) {
  36                                 throw new SlcException("Cannot compare single reult nodes", e);
  37                         }
  38                 } else
  39                         return true;
  40         }
  41
  42         public int hashCode(Object element) {
  43                 return element.hashCode();
  44         }
  45
  46 }