001    /*
002    // $Id: //open/mondrian-release/3.1/src/main/mondrian/olap/fun/ArrayHolder.java#2 $
003    // This software is subject to the terms of the Eclipse Public License v1.0
004    // Agreement, available at the following URL:
005    // http://www.eclipse.org/legal/epl-v10.html.
006    // Copyright (C) 2007-2007 Julian Hyde
007    // All Rights Reserved.
008    // You must accept the terms of that agreement to use this software.
009    */
010    package mondrian.olap.fun;
011    
012    import java.util.Arrays;
013    
014    /**
015     * Holds an array, so that {@link #equals} and {@link #hashCode} work.
016     *
017     * @author jhyde
018     * @version $Id: //open/mondrian-release/3.1/src/main/mondrian/olap/fun/ArrayHolder.java#2 $
019     */
020    public class ArrayHolder<T> {
021        private final T[] a;
022    
023        ArrayHolder(T[] a) {
024            this.a = a;
025        }
026    
027        public int hashCode() {
028            return Arrays.hashCode(a);
029        }
030    
031        public boolean equals(Object o) {
032            return o instanceof ArrayHolder
033                && Arrays.equals(a, ((ArrayHolder) o).a);
034        }
035    }
036    
037    // End ArrayHolder.java