org.eclipse.persistence.descriptors.VPDMultitenantPolicy 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) 2011, 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:
//     09/09/2011-2.3.1 Guy Pelletier
//       - 356197: Add new VPD type to MultitenantType
//     11/15/2011-2.3.2 Guy Pelletier
//       - 363820: Issue with clone method from VPDMultitenantPolicy
package org.eclipse.persistence.descriptors;

import org.eclipse.persistence.descriptors.ClassDescriptor;
import org.eclipse.persistence.exceptions.DescriptorException;
import org.eclipse.persistence.exceptions.ValidationException;
import org.eclipse.persistence.internal.helper.DatabaseField;
import org.eclipse.persistence.internal.sessions.AbstractSession;
import org.eclipse.persistence.tools.schemaframework.TableDefinition;

/**
 * A vpd multitenant policy.
 *
 * @author Guy Pelletier
 * @since EclipseLink 2.3.1
 */
public class VPDMultitenantPolicy extends SingleTableMultitenantPolicy {
    protected String vpdIdentifier;
    protected String vpdIdentifierFieldName;

    public VPDMultitenantPolicy(ClassDescriptor descriptor) {
        super(descriptor);
    }

    /**
     * INTERNAL:
     * Return all the tenant id fields.
     */
    @Override
    public void addTenantDiscriminatorField(String property, DatabaseField field) {
        super.addTenantDiscriminatorField(property, field);

        // TODO: we could check for multiple different vpdIdentifiers for the
        // same policy. Right now, last one in partly wins (i.e. unless another
        // class sets a vpd identifier different then the last one in here).

        vpdIdentifier = property;
        vpdIdentifierFieldName = field.getName();
    }

    /**
     * INTERNAL:
     */
    @Override
    public void addToTableDefinition(TableDefinition tableDefinition) {
        tableDefinition.setCreateVPDCalls(true, vpdIdentifierFieldName);
    }

    /**
     * INTERNAL:
     */
    @Override
    public MultitenantPolicy clone(ClassDescriptor descriptor) {
        VPDMultitenantPolicy clonedPolicy = new VPDMultitenantPolicy(descriptor);
        clonedPolicy.includeTenantCriteria = includeTenantCriteria;
        clonedPolicy.tenantDiscriminatorFields = tenantDiscriminatorFields;
        clonedPolicy.vpdIdentifier = vpdIdentifier;
        clonedPolicy.vpdIdentifierFieldName = vpdIdentifierFieldName;
        return clonedPolicy;
    }

    /**
     * INTERNAL:
     * Return the single identifier.
     */
    public String getVPDIdentifier() {
        return vpdIdentifier;
    }

    /**
     * INTERNAL:
     * Allow the descriptor to initialize any dependencies on this session.
     */
    @Override
    public void preInitialize(AbstractSession session) throws DescriptorException {
        super.preInitialize(session);

        // Set the VPD identifier and connection queries on the session.
        String vpdIdentifier = session.getProject().getVPDIdentifier();

        if (vpdIdentifier != null) {
            if (! vpdIdentifier.equals(getVPDIdentifier())) {
                throw ValidationException.multipleVPDIdentifiersSpecified(vpdIdentifier, session.getProject().getVPDLastIdentifierClassName(), getVPDIdentifier(), getDescriptor().getJavaClassName());
            }
        } else {
            // Initialize the VPD queries and set them on the project.
            session.getProject().setVPDIdentifier(getVPDIdentifier());
            session.getProject().setVPDLastIdentifierClassName(getDescriptor().getJavaClassName());
        }
    }
}