| /* |
| * 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.internal.xr; |
| |
| // Javase imports |
| |
| // Java extension imports |
| |
| // EclipseLink imports |
| import org.eclipse.persistence.queries.FetchGroup; |
| import org.eclipse.persistence.queries.ReadObjectQuery; |
| import org.eclipse.persistence.sessions.UnitOfWork; |
| |
| public class UpdateOperation extends Operation { |
| |
| /** |
| * Execute <code>UPDATE</code> operation on the database |
| * @param xrService parent <code>XRService</code> that owns this <code>Operation</code> |
| * @param invocation contains runtime argument values to be bound to the list of |
| * {@link Parameter}'s. |
| * @return result - <code>null</code> as the underlying <code>UPDATE</code> operation on |
| * the database does not return a value. |
| * |
| * @see Operation |
| */ |
| @Override |
| public Object invoke(XRServiceAdapter xrService, Invocation invocation) { |
| XRDynamicEntity instance = (XRDynamicEntity)invocation.getParameters().toArray()[0]; |
| UnitOfWork uow = xrService.getORSession().acquireUnitOfWork(); |
| ReadObjectQuery query = new ReadObjectQuery(); |
| query.setSelectionObject(instance); |
| query.setIsExecutionClone(true); |
| FetchGroup simpleFetchGroup = new FetchGroup(); |
| for (String propertyName : instance.fetchPropertiesManager().getPropertyNames()) { |
| if (instance.isSet(propertyName)) { |
| simpleFetchGroup.addAttribute(propertyName); |
| } |
| } |
| query.setFetchGroup(simpleFetchGroup); |
| // read the existing object into the uow |
| uow.executeQuery(query); |
| // merge in only properties that are set |
| uow.mergeClone(instance); |
| uow.commit(); |
| return null; |
| } |
| } |