tobjectidentityhashingstrategy.java

来自「mallet是自然语言处理、机器学习领域的一个开源项目。」· Java 代码 · 共 39 行

// Copyright (c) 2002, Eric D. Friedman All Rights Reserved.

package gnu.trove;

/**
 * This object hashing strategy uses the System.identityHashCode
 * method to provide identity hash codes.  These are identical to the
 * value produced by Object.hashCode(), even when the type of the
 * object being hashed overrides that method.
 * 
 * Created: Sat Aug 17 11:13:15 2002
 *
 * @author Eric Friedman
 * @version $Id: TObjectIdentityHashingStrategy.java,v 1.3 2004/11/24 20:00:00 casutton Exp $
 */

public final class TObjectIdentityHashingStrategy implements TObjectHashingStrategy {
    /**
     * Delegates hash code computation to the System.identityHashCode(Object) method.
     *
     * @param object for which the hashcode is to be computed
     * @return the hashCode
     */
    public final int computeHashCode(Object object) {
        return System.identityHashCode(object);
    }

    /**
     * Compares object references for equality.
     *
     * @param o1 an <code>Object</code> value
     * @param o2 an <code>Object</code> value
     * @return true if o1 == o2
     */
    public final boolean equals(Object o1, Object o2) {
        return o1 == o2;
    }
} // TObjectIdentityHashingStrategy