foundation/org.eclipse.persistence.core/src/main/java/org/eclipse/persistence/sessions/changesets/EISCollectionChangeRecord.java

/*
 * Copyright (c) 1998, 2019 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.sessions.changesets;

import java.util.List;

import org.eclipse.persistence.internal.sessions.ObjectChangeSet;

/**
 * <p>
 * <b>Purpose</b>: To provide API into the EISCollectionChangeSet.
 * <p>
 * <b>Description</b>: Capture the changes for an unordered collection as
 * collections of adds and removes.
 */
public interface EISCollectionChangeRecord extends ChangeRecord {

    /**
     * ADVANCED:
     * Return the objects added to the collection.
     * The contents of this collection is determined by the mapping that
     * populated it
     */
    List<ObjectChangeSet> getAdds();

    /**
     * <p>
     * ADVANCED:
     * Return the objets whose Map keys have changed.
     * The contents of this collection is determined by the mapping that
     * populated it
     */
    List getChangedMapKeys();

    /**
     * ADVANCED:
     * Return the removed objects.
     * The contents of this collection is determined by the mapping that
     * populated it
     */
    List<ObjectChangeSet> getRemoves();

    /**
     * ADVANCED:
     * Return whether any changes have been recorded with the change record.
     */
    boolean hasChanges();
}