| /* |
| * Copyright (c) 1998, 2020 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.descriptors.invalidation; |
| |
| import org.eclipse.persistence.internal.identitymaps.CacheKey; |
| import org.eclipse.persistence.descriptors.invalidation.CacheInvalidationPolicy; |
| |
| /** |
| * PUBLIC: |
| * A cache invalidation policy in which no objects will expire. The only way for objects |
| * to become invalid in the cache is for them to be explicitly set to invalid through |
| * method calls on the IdentityMapAccessor. This is the default cache invalidation policy. |
| * @see CacheInvalidationPolicy |
| * @see org.eclipse.persistence.sessions.IdentityMapAccessor |
| */ |
| public class NoExpiryCacheInvalidationPolicy extends CacheInvalidationPolicy { |
| |
| /** |
| * INTERNAL: |
| * Since this policy implements no expiry, this will always return NO_EXPIRY |
| */ |
| @Override |
| public long getExpiryTimeInMillis(CacheKey key) { |
| return NO_EXPIRY; |
| } |
| |
| /** |
| * INTERNAL: |
| * Return the remaining life of this object |
| * Override the default implementation. |
| */ |
| @Override |
| public long getRemainingValidTime(CacheKey key) { |
| return NO_EXPIRY; |
| } |
| |
| /** |
| * INTERNAL: |
| * This will return true if the object is set to be invalid, false otherwise. |
| */ |
| @Override |
| public boolean isInvalidated(CacheKey key) { |
| return key.getInvalidationState() == CacheKey.CACHE_KEY_INVALID; |
| } |
| |
| /** |
| * INTERNAL: |
| * This will return true if the object is set to be invalid, false otherwise. |
| */ |
| @Override |
| public boolean isInvalidated(CacheKey key, long currentTimeMillis) { |
| return key.getInvalidationState() == CacheKey.CACHE_KEY_INVALID; |
| } |
| } |