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/*
 * Copyright (c) 1998, 2023 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0,
 * or the Eclipse Distribution License v. 1.0 which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
 */

// Contributors:
//     Oracle - initial API and implementation from Oracle TopLink
package org.eclipse.persistence.internal.identitymaps;

import java.lang.ref.SoftReference;

/**
 * 

Purpose: Container class for storing objects in an IdentityMap. * The soft cache key uses a soft reference to allow garbage collection of its object. * The cache key itself however will remain and thus should cleaned up every now and then. *

Responsibilities:

    *
  • Hold key and object. *
  • Maintain and update the current writeLockValue. *
* @author James Sutherland * @since TopLink 11g */ public class SoftCacheKey extends WeakCacheKey { /** * Initialize the newly allocated instance of this class. * @param primaryKey contains values extracted from the object * @param writeLockValue is the write lock value, null if optimistic locking not being used for this object. * @param readTime the time EclipseLInk read the cache key */ public SoftCacheKey(Object primaryKey, Object object, Object writeLockValue, long readTime, boolean isIsolated) { super(primaryKey, object, writeLockValue, readTime, isIsolated); } @Override public void setObject(Object object) { this.reference = new SoftReference(object); } }




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