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/*
* 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.xr;
//javase imports
import org.eclipse.persistence.descriptors.ClassDescriptor;
import org.eclipse.persistence.internal.databaseaccess.Platform;
import org.eclipse.persistence.internal.helper.ConversionManager;
import org.eclipse.persistence.internal.indirection.BasicIndirectionPolicy;
import org.eclipse.persistence.mappings.DatabaseMapping;
import org.eclipse.persistence.mappings.ForeignReferenceMapping;
import org.eclipse.persistence.sessions.Login;
import org.eclipse.persistence.sessions.Project;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import static org.eclipse.persistence.internal.xr.XRDynamicClassLoader.COLLECTION_WRAPPER_SUFFIX;
/**
*
* INTERNAL: Static helper methods that reads EclipseLink project deployment
* XML without classes.
*
* This API only supports EclipseLink 1.x format deployment XML
*/
public final class ProjectHelper {
private ProjectHelper() {
// no instance please
}
/**
* INTERNAL: Fix the given EclipseLink OR and OX projects so that the
* descriptors for all generated sub-classes of XRDynamicEntity have the correct
* AttributeAccessors.
*/
public static void fixOROXAccessors(Project orProject, Project oxProject) {
for (Iterator i = orProject.getDescriptors().values().iterator(); i.hasNext();) {
ClassDescriptor desc = i.next();
if (!XRDynamicEntity.class.isAssignableFrom(desc.getJavaClass())) {
continue;
}
Class clz = desc.getJavaClass();
ClassDescriptor xdesc = null;
if (oxProject != null) {
xdesc = oxProject.getDescriptorForAlias(desc.getAlias());
}
XRDynamicPropertiesManager xrDPM = null;
if (!clz.getName().endsWith(COLLECTION_WRAPPER_SUFFIX)) {
try {
XRDynamicEntity newInstance = (XRDynamicEntity) clz.getConstructor().newInstance();
xrDPM = newInstance.fetchPropertiesManager();
}
catch (Exception e) {
e.printStackTrace();
}
}
Set propertiesNameSet = new HashSet<>();
for (Iterator j = desc.getMappings().iterator(); j.hasNext();) {
DatabaseMapping dm = j.next();
String attributeName = dm.getAttributeName();
DatabaseMapping xdm = null;
if (xdesc != null) {
xdm = xdesc.getMappingForAttributeName(attributeName);
}
dm.setAttributeAccessor(new XRDynamicEntityAccessor(dm));
if (xdm != null) {
if (dm.isForeignReferenceMapping()) {
ForeignReferenceMapping frm = (ForeignReferenceMapping)dm;
if (frm.usesIndirection() && frm.getIndirectionPolicy().getClass().
isAssignableFrom(BasicIndirectionPolicy.class)) {
xdm.setAttributeAccessor(new XRDynamicEntityVHAccessor(dm));
}
else {
// no indirection or indirection that is transparent enough (!) to work
xdm.setAttributeAccessor(new XRDynamicEntityAccessor(dm));
}
}
else {
xdm.setAttributeAccessor(new XRDynamicEntityAccessor(dm));
}
}
propertiesNameSet.add(attributeName);
}
if (xrDPM != null) {
xrDPM.setPropertyNames(propertiesNameSet);
}
}
// turn-off dynamic class generation
ClassLoader cl = null;
Login login = orProject.getDatasourceLogin();
if (login != null) {
Platform platform = login.getDatasourcePlatform();
if (platform != null) {
ConversionManager conversionManager = platform.getConversionManager();
if (conversionManager != null) {
cl = conversionManager.getLoader();
}
}
}
if (cl instanceof XRDynamicClassLoader) {
XRDynamicClassLoader xrdecl = (XRDynamicClassLoader)cl;
xrdecl.dontGenerateSubclasses();
}
if (oxProject != null) {
cl = null;
login = oxProject.getDatasourceLogin();
if (login != null) {
Platform platform = login.getDatasourcePlatform();
if (platform != null) {
ConversionManager conversionManager = platform.getConversionManager();
if (conversionManager != null) {
cl = conversionManager.getLoader();
}
}
}
if (cl instanceof XRDynamicClassLoader) {
XRDynamicClassLoader xrdecl = (XRDynamicClassLoader) cl;
xrdecl.dontGenerateSubclasses();
}
}
}
}