| /* |
| * 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.sequencing; |
| |
| import java.util.Iterator; |
| |
| import org.eclipse.persistence.internal.sessions.AbstractSession; |
| import org.eclipse.persistence.sessions.broker.SessionBroker; |
| |
| class SessionBrokerSequencing implements Sequencing { |
| protected SessionBroker broker; |
| protected int whenShouldAcquireValueForAll; |
| |
| public static boolean atLeastOneSessionHasSequencing(SessionBroker br) { |
| boolean hasSequencing = false; |
| Iterator<AbstractSession> sessionEnum = br.getSessionsByName().values().iterator(); |
| while (sessionEnum.hasNext() && !hasSequencing) { |
| AbstractSession session = sessionEnum.next(); |
| hasSequencing = session.getSequencing() != null; |
| } |
| return hasSequencing; |
| } |
| |
| public SessionBrokerSequencing(SessionBroker broker) { |
| this.broker = broker; |
| initialize(); |
| } |
| |
| protected void initialize() { |
| whenShouldAcquireValueForAll = UNDEFINED; |
| boolean first = true; |
| Iterator<AbstractSession> sessionEnum = broker.getSessionsByName().values().iterator(); |
| while ((first || (whenShouldAcquireValueForAll != UNDEFINED)) && sessionEnum.hasNext()) { |
| AbstractSession session = sessionEnum.next(); |
| Sequencing sequencing = session.getSequencing(); |
| if (sequencing != null) { |
| if (first) { |
| whenShouldAcquireValueForAll = sequencing.whenShouldAcquireValueForAll(); |
| first = false; |
| } else { |
| if (whenShouldAcquireValueForAll != sequencing.whenShouldAcquireValueForAll()) { |
| whenShouldAcquireValueForAll = UNDEFINED; |
| } |
| } |
| } |
| } |
| } |
| |
| // internal |
| protected Sequencing get(Class<?> cls) { |
| return broker.getSessionForClass(cls).getSequencing(); |
| } |
| |
| @Override |
| public int whenShouldAcquireValueForAll() { |
| return whenShouldAcquireValueForAll; |
| } |
| |
| @Override |
| public Object getNextValue(Class<?> cls) { |
| return get(cls).getNextValue(cls); |
| } |
| } |