replacing equals with pure abstracted method

git-svn-id: https://subversion.renater.fr/xtandempipeline/trunk@289 b8ef2a07-7df7-436f-90b9-41648038564b

xtandempipeline/src/fr/inra/pappso/xtandempipeline/grouping/HashKey4Groups.java

@@ -11,13 +11,7 @@ abstract public class HashKey4Groups implements Comparable<HashKey4Groups> {
 	}
 
 	@Override
-	public boolean equals(Object toCompare) {
-		if (this.hashCode() == toCompare.hashCode()) {
-			// logger.debug("equals on hashSampleScan "+this.toString());
-			return true;
-		}
-		return false;
-	}
+	abstract public boolean equals(Object toCompare);
 
 	@Override
 	abstract public int hashCode();