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();
  	}
  
  }