org.eclipse.persistence.internal.oxm.Reference 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, 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.oxm;

import org.eclipse.persistence.internal.oxm.mappings.Mapping;
import org.eclipse.persistence.oxm.sequenced.Setting;

import java.util.HashMap;

/**
 * INTERNAL:
 * Purpose: Holds mapping reference info.  The info held in this class
 * will be used after unmarshal to resolve 1-1 and 1-M mapping references.  This
 * is necessary to ensure that all related objects have been created before
 * attempting to set instance values in related objects.
 */

public class Reference {
    protected Mapping mapping;        // mapping associated with this reference
    protected Object sourceObject;        // the source object instance
    protected Class targetClass;        // the reference class
    protected Object primaryKey;        // primary key values for cache lookup - used in single case
    protected HashMap primaryKeyMap;    // map of primary key values for cache lookup - used in collection case
    private Setting setting;
    private Object container;

    /**
     * Get the container this reference should be added to if it was from a collection mapping
     */
    public Object getContainer() {
        return container;
    }

    public Setting getSetting() {
        return setting;
    }

    public void setSetting(Setting setting) {
        this.setting = setting;
    }

    /**
     * Constructor typically used in the collection case.
     */
    public Reference(Mapping mapping, Object source, Class target, HashMap primaryKeyMap, Object container) {
        this.mapping = mapping;
        sourceObject = source;
        targetClass = target;
        this.primaryKeyMap = primaryKeyMap;
        this.container = container;
    }

    /**
     * Constructor typically used in the single case.
     */
    public Reference(Mapping mapping, Object source, Class target, Object primaryKey) {
        this.mapping = mapping;
        sourceObject = source;
        targetClass = target;
        this.primaryKey = primaryKey;
    }

    /**
     * Return the XMLMapping associated with this reference.
     *
     */
    public Mapping getMapping() {
        return mapping;
    }

    /**
     * Return the map of primary key/values required to lookup
     * the reference class in the cache.
     *
     */
    public HashMap getPrimaryKeyMap() {
        return primaryKeyMap;
    }

    /**
     * Return the list of primary key values required to lookup
     * the reference class in the cache.
     *
     */
    public Object getPrimaryKey() {
        return primaryKey;
    }

    /**
     * Return the source object for this reference.
     *
     */
    public Object getSourceObject() {
        return sourceObject;
    }

    /**
     * Return the target (reference) class for this reference.
     *
     */
    public Class getTargetClass() {
        return targetClass;
    }

    /**
     * Set the primary key value required to lookup
     * the reference class in the cache.
     */
    public void setPrimaryKey(Object primaryKey) {
        this.primaryKey = primaryKey;
    }
}