package sort;

/** Combines two <b><tt>Buckets</b></tt>' together. Used with scans or 
 *  reductions. 
 */
public class BucketsCombiner implements ObjectOp {

    /** Combines two <b><tt>Buckets</b></tt>' together, the first mutated 
     *  to the result.
     *  @param o1 the first <b><tt>Buckets</b></tt> (mutated)
     *  @param o2 the second <b><tt>Buckets</b></tt> (not mutated)
     *  @return the resulting combined <b><tt>Buckets</b></tt>, pointer 
     *  equal to the first parameter
     */
    public Object eval(Object o1, Object o2) {
	Buckets b1 = (Buckets) o1;
	Buckets b2 = (Buckets) o2;
	b1.combine(b2);
	return b1;
    }

}