org.eclipse.persistence.internal.sessions.SessionBrokerIdentityMapAccessor Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of eclipselink Show documentation

EclipseLink build based upon Git transaction f2b9fc5

There is a newer version: 5.0.0-B03

/*
 * Copyright (c) 1998, 2021 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.sessions;

import org.eclipse.persistence.internal.identitymaps.*;
import org.eclipse.persistence.sessions.broker.*;
import java.util.*;

/**
 * INTERNAL:
 * Subclass of IdentityMapAccessor for Session brokers
 * Overrides some identiy map initialization code
 */
public class SessionBrokerIdentityMapAccessor extends IdentityMapAccessor {
    public SessionBrokerIdentityMapAccessor(AbstractSession session, IdentityMapManager identityMapManager) {
        super(session, identityMapManager);
    }

    /**
     * INTERNAL:
     * Reset the entire object cache.
     * This method blows away both this session's and its parents caches, including the server cache or any other cache.
     * This throws away any objects that have been read in.
     * Extream caution should be used before doing this because object identity will no longer
     * be maintained for any objects currently read in.  This should only be called
     * if the application knows that it no longer has references to object held in the cache.
     */
    @Override
    public void initializeAllIdentityMaps() {
        for (Iterator sessionEnum = ((SessionBroker)session).getSessionsByName().values().iterator();
             sessionEnum.hasNext();) {
            AbstractSession session = sessionEnum.next();
            session.getIdentityMapAccessorInstance().initializeAllIdentityMaps();
        }
        super.initializeAllIdentityMaps();
    }

    /**
     * INTERNAL:
     * Reset the entire local object caches.
     * This throws away any objects that have been read in.
     * Extream caution should be used before doing this because object identity will no longer
     * be maintained for any objects currently read in.  This should only be called
     * if the application knows that it no longer has references to object held in the cache.
     */
    @Override
    public void initializeIdentityMaps() {
        for (Iterator sessionEnum = ((SessionBroker)session).getSessionsByName().values().iterator();
             sessionEnum.hasNext();) {
            AbstractSession session = sessionEnum.next();
            session.getIdentityMapAccessorInstance().initializeIdentityMaps();
        }
        super.initializeIdentityMaps();
    }
}